question_answer 1)
A network of four capacitors of capacity equal to \[{{C}_{1}}=C,\,C{{ }_{2}}=2C,\,{{C}_{3}}\,=3C\]and \[{{C}_{4}}\,=4C\] are connected to a battery as shown in the figure. The ratio of the charges on \[{{C}_{2}}\] and \[{{C}_{4}}\] is.:
A)
\[\,\frac{22}{3}\]
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B)
\[\,\frac{3}{22}\]
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C)
\[\,\frac{7}{4}\]
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D)
\[\,\frac{4}{7}\]
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question_answer 2)
Which of the following is true for rays coming from infinity?
A)
Two images are formed
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B)
Continuous image is formed between focal points of upper and lower lens
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C)
One image is formed
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D)
None of the above
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question_answer 3) What is dimensional formula of thermal conductivity?
A)
\[[ML{{T}^{-1}}{{\theta }^{-1}}]\]
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B)
\[[ML{{T}^{-3}}{{\theta }^{-1}}]\]
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C)
\[\text{ }\!\![\!\!\text{ }{{\text{M}}^{2}}\text{L}{{\text{T}}^{\text{-3}}}{{\text{ }\!\!\theta\!\!\text{ }}^{-2}}\text{ }\!\!]\!\!\text{ }\]
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D)
\[[M{{L}^{2}}{{T}^{-2}}\theta ]\]
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question_answer 4)
A block C of mass m is moving with velocity \[{{v}_{o}}\]and collides elastically with block A of mass m and connected to another block B of mass 2m through spring of spring constant k. What is k, if \[{{x}_{o}}\] is compression of spring when velocity of A and B is same?
A)
\[\frac{m{{v}_{0}}^{2}}{{{x}_{0}}^{2}}\]
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B)
\[\frac{m{{v}_{0}}^{2}}{2{{x}_{0}}^{2}}\]
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C)
\[\frac{3}{2}\frac{m{{v}_{0}}^{2}}{{{x}_{0}}^{2}}\]
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D)
\[\frac{2}{3}\frac{m{{v}_{0}}^{2}}{{{x}_{0}}^{2}}\]
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question_answer 5)
The coefficient of static friction \[{{\mu }_{s,}}\]between block A of mass 2 kg and the table as shown in the figure, is 0.2. What would be the maximum mass value of block B, so that the two blocks do not move? The string and the pulley are assumed to be smooth and massless.\[(g=10\,m/{{s}^{2}})\]
A)
2.0kg
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B)
4.0kg
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C)
0.2kg
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D)
0.4kg
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question_answer 6) A bullet of mass 20 g and moving with 600 m/s collides with a block of mass 4 kg hanging with the string. What is velocity of bullet when it comes out of block, if block rises to height 0.2 m after collision?
A)
200 m/s
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B)
150 m/s
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C)
400 m/s
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D)
300 m/s
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question_answer 7) What is moment of inertia in terms of angular momentum (L) and kinetic energy (K)?
A)
\[\frac{{{L}^{2}}}{K}\]
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B)
\[\frac{L}{2K}\]
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C)
\[\frac{L}{2{{K}^{2}}}\]
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D)
\[\frac{L}{2K}\]
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question_answer 8) A disc of mass 2 kg and radius 0.2 m is rotating with angular velocity 30rad/s. What is angular velocity, if a mass of 0.25 kg is put on periphery of the disc?
A)
24 rad/s
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B)
36 rad/s
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C)
15 rad/s
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D)
26 rad/s
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question_answer 9) If a body is raised from the surface of the earth upto height R, what is the change in potential energy?
A)
\[mgR\]
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B)
\[\frac{3}{2}mgR\]
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C)
\[\frac{mgR}{2}\]
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D)
\[\frac{mgR}{4}\]
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question_answer 10) A piston of cross-sectional area A is fitted in cylinder in which gas of volume V at pressure P is enclosed. Gas obeys Boyles law, what is angular frequency, if piston is displaced slightly?
A)
\[\sqrt{\frac{Ag}{V}}\]
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B)
\[2\sqrt{\frac{Ag}{V}}\]
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C)
\[\sqrt{\frac{2Ag}{V}}\]
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D)
\[\frac{3Ag}{V}\]
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question_answer 11) What maximum frequency can be reflected from ionosphere?
A)
5 MHz
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B)
6 GHz
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C)
5 kHz
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D)
500 MHz
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question_answer 12) Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by \[{{({{E}_{g}})}_{C}},\]\[{{({{E}_{g}})}_{Si}}\] and\[{{({{E}_{g}})}_{Ge}}\] respectively. Which one of the following relationships is true in their case?
A)
\[{{({{E}_{g}})}_{C}}>{{({{E}_{g}})}_{Si}}\]
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B)
\[{{({{E}_{g}})}_{C}}={{({{E}_{g}})}_{Si}}\]
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C)
\[{{({{E}_{g}})}_{C}}<{{({{E}_{g}})}_{Ge}}\]
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D)
\[{{({{E}_{g}})}_{C}}<{{({{E}_{g}})}_{Si}}\]
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question_answer 13) De-Broglie wavelength of photoelectrons is 1 A what is stopping potential?
A)
151V
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B)
15.3V
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C)
12.3V
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D)
13.6V
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question_answer 14)
A piston Filled in cylindrical pipe is pulled as shown in the figure. A tuning fork is sounded at open end and loudest sound is heard at open length 13 cm, 41 cm and 69 cm. The frequency of tuning fork, if velocity of sound is 350 m/s is :
A)
1250 Hz
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B)
625 Hz
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C)
417 Hz
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D)
715 Hz
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question_answer 15) A man is standing on the plate form and one train is approaching and another train is going away with speed of 4 m/s, frequency of sound produced by train is 240 Hz. What will be the number of beats heard by him per second?
A)
12
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B)
Zero
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C)
6
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D)
3
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question_answer 16)
A capacitor having capacitance \[1\,\mu F\] with air is filled with two dielectric as shown. How many times capacitance will increase?
A)
12
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B)
6
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C)
8/3
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D)
3
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question_answer 17) In a transformer loss due to eddy currents is minimized by :
A)
laminating the core
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B)
laminating the core of steel
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C)
increasing the number of turns of primal coil
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D)
lubricating the core
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question_answer 18) Permanent magnet has properties retentivity and coercivity respectively :
A)
high-high
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B)
low-low
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C)
low-high
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D)
high-low
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question_answer 19) Hydrogen bomb is based upon :
A)
fission
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B)
fusion
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C)
chemical reaction
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D)
transmutation
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question_answer 20) Six moles of \[{{O}_{2}}\] gas is heated from \[{{20}^{o}}C\] to \[{{35}^{o}}C\] at constant volume. If specific heat capacity l constant pressure is 8cal/mol-K and R = 8.31 J/mol-K, what is change in internal energy of gas?
A)
180 cal
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B)
300 cal
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C)
360 cal
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D)
540 cal
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question_answer 21) In Carnot engine efficiency is 40% at hot reservoir temperature T. For efficiency 5% what will be temperature of hot reservoir?
A)
\[\frac{T}{5}\]
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B)
\[\frac{2T}{5}\]
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C)
\[6T\]
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D)
\[\frac{6T}{5}\]
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question_answer 22) A ball of mass 2 kg moving with velocity 3 ml collides with spring of natural length 2 m art force constant 144 N/m. What will be length of compressed spring?
A)
2m
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B)
1.5m
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C)
1m
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D)
0.5m
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question_answer 23) A proton moving vertically downward enters a magnetic field pointing towards north. In which direction proton will deflect?
A)
East
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B)
West
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C)
North
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D)
South
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question_answer 24) Induced emf in the coil depends upon :
A)
conductivity of coil
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B)
amount of flux
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C)
rate of change of linked flux
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D)
resistance of coil
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question_answer 25) Within depletion region of p-n junction of diode:
A)
p-side is positive and n-side negative
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B)
p-side is negative and n-side is positive
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C)
both side positive or both negative
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D)
both side neutral
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question_answer 26) 27 small drops each having charge q and radius coalases to form big drop. How many times charge and capacitance will become?
A)
3, 27
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B)
27, 3
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C)
27, 27
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D)
3, 3
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question_answer 27) Which of the following is not a process involved in fabrication of IC?
A)
Polymerisation
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B)
Diffusion
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C)
Photolithography
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D)
Metallisation
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question_answer 28) X-rays are used in determining the molecular structure of crystalline because :
A)
its energy is high
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B)
it can penetrate the material
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C)
its wavelength is comparable to in teratomic distance
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D)
its frequency is low
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question_answer 29) In a radioactive material the activity at time \[{{t}_{1}}\] is \[{{R}_{1}}\] and at a later time \[{{t}_{2}}\], it is \[{{R}_{2}}\]. If the decay constant of the material is \[\lambda ,\] then:
A)
\[{{R}_{1}}={{R}_{2}}{{e}^{-\lambda ({{t}_{1}}-{{t}_{2}})}}\]
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B)
\[{{R}_{1}}={{R}_{2}}{{e}^{\lambda ({{t}_{1}}-{{t}_{2}})}}\]
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C)
\[{{R}_{1}}={{R}_{2}}({{t}_{2}}/{{t}_{1}})\]
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D)
\[{{R}_{1}}={{R}_{2}}\]
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question_answer 30) A telescope has focal length of objective and eyepiece as 200 cm and 5 cm respectively. What is magnification of telescope?
A)
40
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B)
80
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C)
50
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D)
0.01
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question_answer 31) A string has tension T. For tripling the frequency, the tension in string will become :
A)
\[3T\]
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B)
\[\frac{T}{9}\]
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C)
\[\frac{T}{\sqrt{3}}\]
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D)
\[9T\]
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question_answer 32) A steel ball of mass 5 g is thrown downward with velocity 10 m/s from height 19.5 m. It penetrates sand by 50 cm. The change in mechanical energy will be : (g = 10 m/s )
A)
1J
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B)
1.25 J
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C)
1.51 J
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D)
1.75J
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question_answer 33)
Two identical springs are connected in series and parallel as shown in the figure. If \[{{f}_{s}}\] and \[{{f}_{p}}\] are frequency of series and parallel arrangement what is \[\frac{{{f}_{s}}}{{{f}_{p}}}\]?
A)
1:2
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B)
2:1
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C)
1:3
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D)
3:1
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question_answer 34) Light of frequency \[v\] falls on material of threshold frequency \[{{v}_{0}}\]. Maximum kinetic energy of emitted electron is proportional to :
A)
\[V-{{V}_{0}}\]
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B)
\[V\]
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C)
\[\sqrt{V-{{V}_{0}}}\]
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D)
\[{{V}_{0}}\]
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question_answer 35) Suppose the gravitational force varies inversely as the nth power of the distance. The time period of a planet in circular orbit of radius R around sun will be proportional to :
A)
\[{{R}^{(n-1)/2}}\]
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B)
\[{{R}^{(n+1)/2}}\]
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C)
\[{{R}^{n-1}}\]
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D)
\[{{R}^{n+1}}\]
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question_answer 36) A wave equation is given by \[y=4\,\sin \,\left[ \pi \left( \frac{t}{5}-\frac{x}{9}+\frac{1}{6} \right) \right]\]where x is in cm and t in second. Which of the following is true?
A)
\[\lambda =18\,cm\]
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B)
\[v=4\,m/s\]
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C)
\[a=0.4\,m\]
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D)
\[f=50\,Hz\]
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question_answer 37) A light moves from denser to rarer medium, which of the following is correct?
A)
Energy increases
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B)
Frequency increases
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C)
Phase changes by 90°
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D)
Velocity increases
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question_answer 38) A small disc of radius 2 cm is cut from a disc of radius 6 cm, if the distance between their centers is 3.2 cm, what is shift in the centre of mass of the disc?
A)
0.4cm
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B)
2.4cm
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C)
1.8cm
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D)
1.2cm
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question_answer 39) A particle accelerating uniformly has velocity v at time t1. What is work done in time t?
A)
\[\frac{1}{2}\frac{m{{v}^{2}}}{{{t}_{1}}^{2}}{{t}^{2}}\]
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B)
\[\frac{1}{2}{{\left( \frac{mv}{{{t}_{1}}} \right)}^{2}}{{t}^{2}}\]
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C)
\[\frac{m{{v}^{2}}}{{{t}_{1}}^{2}}{{t}^{2}}\]
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D)
\[\frac{2m{{v}^{2}}}{{{t}_{1}}^{2}}{{t}^{2}}\]
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question_answer 40) Which one of the following statements is true?
A)
Both light and sound waves in air are transverse
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B)
The sound waves in air are longitudinal while the light waves are transverse
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C)
Both light and sound waves in air are longitudinal
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D)
Both light and sound waves can travel in vacuum
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question_answer 41) \[\gamma \]-rays are originated from :
A)
nucleus
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B)
outermost shell of nucleus
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C)
innermost shell of nucleus
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D)
none of the above
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question_answer 42) What is not true for equipotential surface for uniform electric Held?
A)
Equipotential surface is flat
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B)
Equipotential surface is spherical
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C)
Electric lines are perpendicular-to equipotential surface
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D)
Work done is zero
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question_answer 43) Two copper wires of length \[l\] and 2\[l\] have radii r and 2r respectively. What is the ratio of their specific resistances?
A)
1:2
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B)
2:1
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C)
1:1
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D)
1: 3
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question_answer 44) A metro trains starts from rest and in 5 s achieves 108 km/h. After that it moves with constant velocity and comes to rest after travelling 45 m with uniform retardation. If total distance travelled is 395 m, find total time of travelling.
A)
12.2s
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B)
15.3s
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C)
9s
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D)
17.2s
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question_answer 45) The radius of germanium (Ge) nuclide is measured to be twice the radius of \[_{4}^{9}\]Be. The number of nucleons in Ge are :
A)
73
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B)
74
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C)
75
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D)
72
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question_answer 46) A closed organ pipe of length 20 cm is sounded with tuning fork in resonance. What is frequency of tuning fork? (v = 332 m/s)
A)
300 Hz
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B)
350 Hz
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C)
375 Hz
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D)
415 Hz
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question_answer 47) The displacement or particle is given by \[x={{a}_{o}}+\frac{{{a}_{1}}t}{2}-\frac{{{a}_{2}}{{t}^{2}}}{3}\] What is its acceleration?
A)
Increase
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B)
Decrease
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C)
0.2
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D)
Zero
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question_answer 48) If \[\text{ }\!\!|\!\!\text{ }\mathbf{\vec{A}}\text{ }\!\!\times\!\!\text{ }\mathbf{\vec{B}}\text{ }\!\!|\!\!\text{ =}\sqrt{\text{3}}\mathbf{\vec{A}}\mathbf{.\vec{B},}\] then the value of \[\text{ }\!\!|\!\!\text{ }\mathbf{\vec{A}}\text{ }\!\!\times\!\!\text{ }\mathbf{\vec{B}}\text{ }\!\!|\!\!\text{ }\] is :
A)
\[{{({{A}^{2}}+{{B}^{2}}+AB)}^{1/2}}\]
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B)
\[{{\left( {{A}^{2}}+{{B}^{2}}+\frac{AB}{\sqrt{3}} \right)}^{1/2}}\]
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C)
\[A+B\]
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D)
\[{{({{A}^{2}}+{{B}^{2}}+\sqrt{3}AB)}^{1/2}}\]
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question_answer 49) Pressure of an ideal gas is increased by keeping temperature constant. What is effect on kinetic energy of molecules?
A)
Increase
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B)
Decrease
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C)
No change
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D)
Cannot be determined
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question_answer 50) The refractive index of the material of a prism is \[\sqrt{2}\] and its refracting angle is \[{{30}^{o}}\]. One of the refracting surfaces of the prism is made a mirror inwards. A beam of monochromatic light entering the prism from the other face will retrace its path after reflection from the mirrored surface, if its angle of incidence on the prism is:
A)
\[{{45}^{o}}\]
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B)
\[{{60}^{o}}\]
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C)
\[{{0}^{o}}\]
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D)
\[{{30}^{o}}\]
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question_answer 51) In which of the following \[\Delta {{H}_{f}}\] would not be zero?
A)
C(graphite)
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B)
\[{{I}_{2}}(s)\]
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C)
\[B{{r}_{2}}(l)\]
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D)
red P
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question_answer 52) Which of the following is not an actinoid?
A)
Am
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B)
Cm
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C)
Fm
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D)
Tm
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question_answer 53) Which of the following does not follow EAN rule?
A)
\[V{{(CO)}_{6}}\]
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B)
\[Cr{{(CO)}_{6}}\]
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C)
\[Mn{{(CO)}_{6}}\]
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D)
\[W{{(CO)}_{6}}\]
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question_answer 54) Two concentration cells of Ag with Ag electrode in \[AgN{{O}_{3}}\]. In first cell concentration of one electrode is 1 M and other electrode is M and emf is 0.06 V. In second cell concentration of one electrode is 1 M and other electrode is 0.01 M, calculate emf of second cell.
A)
0.12V
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B)
0.06V
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C)
0.09V
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D)
0.16V
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question_answer 55) Which one has strongest hydrogen bond?
A)
F - H - - - F
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B)
F - H - - - O
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C)
S - H - - - F
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D)
O - H - - - O
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A)
1 only
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B)
2 only
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C)
both 2 and 3
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D)
both 1 and 3
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question_answer 57) Which of the following does not effect half-life of 1st order reaction?
A)
Initial concentration
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B)
Catalyst
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C)
Temperature
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D)
Pressure
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question_answer 58) How many ions will be furnished by\[CoC{{l}_{3}}\,.\,\,6N{{H}_{3}}\]?
A)
3
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B)
4
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C)
either [a] or [b]
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D)
2
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question_answer 59)
Reactivity order of following towards\[NaOE,\,EtOH\]:
A)
\[3>2>1\]
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B)
\[2>1>3\]
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C)
\[1>2>3\]
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D)
\[3>1>2\]
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question_answer 60) Number of atoms in bcc :
A)
1
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B)
2
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C)
3
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D)
4
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question_answer 61) Which one of the following is paramagnetic?
A)
\[N{{O}^{+}}\]
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B)
\[C{{N}^{-}}\]
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C)
\[N{{O}^{-}}\]
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D)
\[CO\]
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question_answer 62) \[pH\] or \[1L\,0.1\,M\,HCl\]when 5 g of HF is added:
A)
0.53
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B)
1
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C)
0.1
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D)
0.01
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question_answer 63) Principle of H-bomb is:
A)
fusion
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B)
fission
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C)
chemical reaction
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D)
interaction between nucleus and electron
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question_answer 64) Potassium phthalimide reacts with A which on hydrolysis gives isopentyl-amine, what is A?
A)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}C{{H}_{2}}Br\]
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B)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{2}}Br \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}C{{H}_{2}}Br\]
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C)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-\underset{\begin{smallmatrix} | \\ Br \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}\]
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D)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ Br \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\]
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question_answer 65) Order of stability of vinyl, allyl, tertiary radicals is :
A)
tertiary, vinyl, allyl
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B)
vinyl, tertiary, allyl
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C)
tertiary, allyl, vinyl
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D)
allyl, tertiary, vinyl
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question_answer 66) \[R-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-Cl+{{H}_{2}}\xrightarrow[S]{Pd/BaS{{O}_{4}}}RCHO\], the name of reaction is:
A)
Cannizaro reaction
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B)
Rosenmund reduction
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C)
Clemmensen reduction
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D)
Wolff-Kishner reduction
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question_answer 67) Toluene by Etard reaction gives:
A)
ortho cresol
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B)
boracic acid
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C)
benzyl alcohol
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D)
benzaldehyde
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question_answer 68) At high pressure van der Waals equation becomes :
A)
\[PV=RT\]
done
clear
B)
\[PV=RT+\frac{a}{V}\]
done
clear
C)
\[PV=RT-\frac{a}{V}\]
done
clear
D)
\[PV=RT+Pb\]
done
clear
View Answer play_arrow
question_answer 69) Units of van der Waals constant a are :
A)
atm \[{{L}^{2}}\]
done
clear
B)
atm \[{{L}^{2}}mo{{l}^{-1}}\]
done
clear
C)
arm \[{{L}^{2}}mo{{l}^{-2}}\]
done
clear
D)
atm \[{{L}^{-1}}\]
done
clear
View Answer play_arrow
question_answer 70) Which glass will not crack when temperature changes?
A)
Pyrex
done
clear
B)
Boro silicate
done
clear
C)
Calcium silicate
done
clear
D)
Flint
done
clear
View Answer play_arrow
question_answer 71) Which of the following is not silicate?
A)
Zeolite
done
clear
B)
Feldspar
done
clear
C)
Silica
done
clear
D)
Ultramarine
done
clear
View Answer play_arrow
question_answer 72) Which of the following carbocations is most stable?
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
question_answer 73) Which of the following is nucleophilic addition reaction?
A)
\[C{{H}_{3}}CHO+HCN\xrightarrow{{}}\]
done
clear
B)
Ethene \[\xrightarrow{{{H}^{+}},{{H}_{2}}O}\]
done
clear
C)
Ethyne \[\xrightarrow[CC{{l}_{4}}]{B{{r}_{2}}}\]
done
clear
D)
Ethene \[\xrightarrow{HCl}\]
done
clear
View Answer play_arrow
question_answer 74) Phosgene is a poisonous gas obtained in chloroform bottles, substance used to make it non-poisonous is:
A)
formic acid
done
clear
B)
ethanol
done
clear
C)
dichloro methane
done
clear
D)
\[C{{H}_{2}}COOH\]
done
clear
View Answer play_arrow
question_answer 75) Aniline reacts with acetic anhydride to give :
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
question_answer 76) Depression in freezing point is 6 K for \[NaCl\]solution. If \[{{K}_{f}}\] for water is 1.86 K/kg mol, amount of \[NaCl\] dissolved in 1 kg water is:
A)
3.42
done
clear
B)
1.62
done
clear
C)
3.24
done
clear
D)
1.71
done
clear
View Answer play_arrow
question_answer 77) Starch is converted to ethanol by fermentation, the sequence of enzymes used are:
A)
amylase, maltase, zymase
done
clear
B)
diastase, maltase, zymase
done
clear
C)
amylase, invertase, zymase
done
clear
D)
amylase, zymase, maltase
done
clear
View Answer play_arrow
question_answer 78) IUPAC name of \[Cl-C{{H}_{2}}-CH=\overset{\begin{smallmatrix} C{{H}_{2}}C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-OH\]
A)
1-chloro-2-ethyl-4-hydroxybut-2-ene
done
clear
B)
4-hydroxy-l-chloro 2-ethyl but-2-ene
done
clear
C)
4-chloro 2-ethyl but-2-en-l-ol
done
clear
D)
2-ethyl 4-chloro but-2-en-l-ol
done
clear
View Answer play_arrow
question_answer 79) Most oxidising agent is:
A)
\[{{[W{{O}_{4}}]}^{2-}}\]
done
clear
B)
\[{{[Cr{{O}_{4}}]}^{2-}}\]
done
clear
C)
\[{{[Ce{{O}_{4}}]}^{2-}}\]
done
clear
D)
\[{{[Mn{{O}_{4}}]}^{2-}}\]
done
clear
View Answer play_arrow
question_answer 80) Which of the following configuration have crystal field splitting energy as zero with low field as well as high field ligand?
A)
\[{{d}^{4}}\]
done
clear
B)
\[{{d}^{6}}\]
done
clear
C)
\[{{d}^{8}}\]
done
clear
D)
\[{{d}^{10}}\]
done
clear
View Answer play_arrow
question_answer 81) \[{{C}_{6}}{{H}_{9}}Br\xrightarrow[-{{(C{{H}_{3}})}_{3}}COH]{{{(C{{H}_{3}})}_{3}}C{{O}^{-}}{{K}^{+}}}X\xrightarrow{C{{H}_{2}}=CHCOC{{H}_{3}}}B\]conversion of X to B is:
A)
Claisen reaction
done
clear
B)
Perkin reaction
done
clear
C)
Diels-Alder reaction
done
clear
D)
Mannich reaction
done
clear
View Answer play_arrow
question_answer 82) Which of the following is not a copolymer?
A)
Nylon 6
done
clear
B)
Nylon 6, 10
done
clear
C)
Nomex
done
clear
D)
Dacron
done
clear
View Answer play_arrow
question_answer 83) A compound has two different asymmetric carbon then the number of stereomers :
A)
4
done
clear
B)
2
done
clear
C)
3
done
clear
D)
1
done
clear
View Answer play_arrow
question_answer 84) Burning of Mg is extinguished by:
A)
throwing \[{{N}_{2}}\] liquid
done
clear
B)
throwing sand
done
clear
C)
throwing ice
done
clear
D)
throwing water
done
clear
View Answer play_arrow
question_answer 85) Flame test is not given by:
A)
Ca
done
clear
B)
Ba
done
clear
C)
Mg
done
clear
D)
Li
done
clear
View Answer play_arrow
question_answer 86) Solubility of \[Pb{{I}_{2}}\] is \[4\times {{10}^{-5}}\]. Its solubility product is:
A)
\[6.4\times {{10}^{-15}}\]
done
clear
B)
\[6.4\times {{10}^{-14}}\]
done
clear
C)
\[2.5\times {{10}^{-13}}\]
done
clear
D)
\[6.4\times {{10}^{-13}}\]
done
clear
View Answer play_arrow
question_answer 87) No two electrons of an atom can have the same set of four quantum numbers, this is:
A)
Paults exclusion principle
done
clear
B)
Hunds rule
done
clear
C)
Aufbau principle
done
clear
D)
\[n+l\] rule
done
clear
View Answer play_arrow
question_answer 88) Which of the following have pyramidal structure?
A)
\[N{{H}_{3}}\]
done
clear
B)
\[S{{F}_{4}}\]
done
clear
C)
\[B{{F}_{3}}\]
done
clear
D)
\[BC{{l}_{3}}\]
done
clear
View Answer play_arrow
question_answer 89) Which of the following is non polar?
A)
\[S{{F}_{6}}\]
done
clear
B)
\[S{{F}_{4}}\]
done
clear
C)
\[IC{{l}_{5}}\]
done
clear
D)
\[PC{{l}_{4}}F\]
done
clear
View Answer play_arrow
question_answer 90) Bond energy of \[{{F}_{2}},C{{l}_{2}},B{{r}_{2}},{{I}_{2}}\] follows the order:
A)
\[B{{r}_{2}}>{{F}_{2}}>C{{l}_{2}}>{{I}_{2}}\]
done
clear
B)
\[{{F}_{2}}>C{{l}_{2}}>B{{r}_{2}}>{{I}_{2}}\]
done
clear
C)
\[{{I}_{2}}>{{F}_{2}}>B{{r}_{2}}>C{{l}_{2}}\]
done
clear
D)
\[{{F}_{2}}>{{I}_{2}}>B{{r}_{2}}>C{{l}_{2}}\]
done
clear
View Answer play_arrow
question_answer 91) Ethene 4- bromine, chloride ion, nitrate ion, number of products :
A)
1
done
clear
B)
2
done
clear
C)
3
done
clear
D)
4
done
clear
View Answer play_arrow
question_answer 92) Which of the following is not coloured?
A)
\[C{{u}^{+}}\]
done
clear
B)
\[M{{n}^{2+}}\]
done
clear
C)
\[F{{e}^{2+}}\]
done
clear
D)
\[F{{e}^{3+}}\]
done
clear
View Answer play_arrow
question_answer 93) For the nuclear reaction \[_{12}^{24}Mg{{+}_{1}}{{D}^{2}}\to \alpha +\]? the missing nuclide is:
A)
\[_{11}^{23}Na\]
done
clear
B)
\[_{12}^{23}Mg\]
done
clear
C)
\[_{11}^{22}Mg\]
done
clear
D)
\[_{12}^{26}Mg\]
done
clear
View Answer play_arrow
question_answer 94) Which of the following statements is correct?
A)
Greater the number of unpaired electron more is paramagnetic character
done
clear
B)
Greater the number of unpaired electron less is paramagnetic character
done
clear
C)
Elements are mostly diamagnetic and compounds are paramagnetic
done
clear
D)
Elements are mostly paramagnetic and compounds are diamagnetic
done
clear
View Answer play_arrow
question_answer 95) Configuration of mannose and glucose differ at C-2 position they are termed as:
A)
epimers
done
clear
B)
anomers
done
clear
C)
racimers
done
clear
D)
mesomers
done
clear
View Answer play_arrow
question_answer 96) For spontaneous reaction or the reaction at equilibrium which of the following is wrong?
A)
\[\Delta H<T\Delta S\] reaction is exothermic and \[T\Delta S\] is + ve
done
clear
B)
\[\Delta H=-ve,\,T\Delta S=0\]
done
clear
C)
\[\Delta H=\,T\Delta S\]
done
clear
D)
\[\Delta H=-ve,\,\,T\Delta S=-ve\]
done
clear
View Answer play_arrow
question_answer 97) A gas cannot be liquefied above:
A)
critical temperature
done
clear
B)
Boyle temperature
done
clear
C)
300K
done
clear
D)
inversion temperature
done
clear
View Answer play_arrow
question_answer 98) The uncertainty in momentum of an electron is \[1\times {{10}^{-5}}\]kgm/s. The uncertainty in its position will be \[(h=6.63\times {{10}^{-34}}Js)\]:
A)
\[5.28\times {{10}^{-30}}m\]
done
clear
B)
\[5.25\times {{10}^{-28}}m\]
done
clear
C)
\[1.05\times {{10}^{-26}}m\]
done
clear
D)
\[2.715\times {{10}^{-3}}m\]
done
clear
View Answer play_arrow
question_answer 99) Cod liver oil is:
A)
solution
done
clear
B)
an emulsion
done
clear
C)
colloidal solution
done
clear
D)
suspension
done
clear
View Answer play_arrow
question_answer 100) Which of the following is a simple ether?
A)
\[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\]
done
clear
B)
\[C{{H}_{3}}OC{{H}_{3}}\]
done
clear
C)
\[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\]
done
clear
D)
\[{{C}_{6}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\]
done
clear
View Answer play_arrow
question_answer 101) Which plant hormone promotes seed, bud dormancy and causes stomatal closure?
A)
IAA
done
clear
B)
Abscisic acid
done
clear
C)
\[G{{A}_{1}}\]
done
clear
D)
Cytokinin
done
clear
View Answer play_arrow
question_answer 102) VLscum album grows on trees. This is an example of:
A)
symbiosis
done
clear
B)
parasitism
done
clear
C)
commensalism
done
clear
D)
predation
done
clear
View Answer play_arrow
question_answer 103) National Botanical Research Institute is located at:
A)
New Delhi
done
clear
B)
Mumbai
done
clear
C)
Lucknow
done
clear
D)
Dehradoon
done
clear
View Answer play_arrow
question_answer 104) Chlorophyll-b is not present in
A)
green algae
done
clear
B)
bryophytes
done
clear
C)
Spirogyra
done
clear
D)
blue-green algae
done
clear
View Answer play_arrow
question_answer 105) Sal and teak is the dominant species in which of the following forests?
A)
Tropical dry deciduous forests
done
clear
B)
Temperate deciduous forests
done
clear
C)
Temperate rain forests
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 106) In addition to absence of chlorophyll what is the other difference between fungi and higher plants?
A)
Type of nutrition and composition of cell wall
done
clear
B)
Cell type
done
clear
C)
Nucleus
done
clear
D)
Reproduction
done
clear
View Answer play_arrow
question_answer 107) First stable product of \[{{C}_{3}}\] pathway is:
A)
Oxalo-acetic acid
done
clear
B)
3 phosphoglyceric acid
done
clear
C)
RuBP
done
clear
D)
Phosphoenol pyruvate
done
clear
View Answer play_arrow
question_answer 108) Which is an example of true pyramid in an ecosystem?
A)
Pyramid of a biomass
done
clear
B)
Pyramid of number
done
clear
C)
Pyramid of energy
done
clear
D)
None of the above
done
clear
View Answer play_arrow
question_answer 109) A gene which gives multiple phenotypic effects:
A)
complementary genes
done
clear
B)
lethal genes
done
clear
C)
pleiotropic genes
done
clear
D)
holandric genes
done
clear
View Answer play_arrow
question_answer 110) Stop codons are:
A)
AUG, GUG
done
clear
B)
UAA, UGA, UAG
done
clear
C)
UAC, UGG
done
clear
D)
AGU, AGA, UAC
done
clear
View Answer play_arrow
question_answer 111) Which is not true about prokaryotes?
A)
DNA is complexed with histones
done
clear
B)
Well developed nucleus absent
done
clear
C)
Mesosome present
done
clear
D)
Mitochondria absent
done
clear
View Answer play_arrow
question_answer 112) Ozone layer is depleted by :
A)
\[S{{O}_{2}},N{{O}_{3}}\]
done
clear
B)
\[CFC,C{{H}_{4}},{{N}_{2}}O\]
done
clear
C)
\[CO,C{{H}_{4}},{{O}_{2}}\]
done
clear
D)
\[{{N}_{2}},C{{O}_{2}}\]
done
clear
View Answer play_arrow
question_answer 113) Which is an electron carrier common to both photosynthesis and respiration?
A)
Cytochrome
done
clear
B)
Phytochrome
done
clear
C)
Pheophytin
done
clear
D)
Plastocyanin
done
clear
View Answer play_arrow
question_answer 114) Nuclear endosperm has :
A)
every nuclear division followed by wall formation
done
clear
B)
initially free-nuclear divisions followed by wall formation
done
clear
C)
first division followed by wall formation and other free nuclear
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 115) Hesperidium of orange is a modification of:
A)
berry
done
clear
B)
drupe
done
clear
C)
pome
done
clear
D)
aggregate fruit
done
clear
View Answer play_arrow
question_answer 116) Ratio of progency when a red coloured heterozygote is crossed with a white coloured plant in which red colour is dominant to white colour:
A)
3 : 1
done
clear
B)
1 : 1
done
clear
C)
1 : 2 : 1
done
clear
D)
9 : 3 : 3 : 1
done
clear
View Answer play_arrow
question_answer 117) Repressible enzymes are formed :
A)
in the absence of corepressor
done
clear
B)
in the presence of corepressor
done
clear
C)
in the presence of apressor
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 118) In drumstick the seeds are dispersed by:
A)
water
done
clear
B)
animals
done
clear
C)
wind
done
clear
D)
explosive mechanism
done
clear
View Answer play_arrow
question_answer 119) What is not seen during mitosis in somatic cells?
A)
Spindle fibres
done
clear
B)
Chromosome movement
done
clear
C)
Disappearance of nucleolus
done
clear
D)
Synapsis
done
clear
View Answer play_arrow
question_answer 120) Leaf colour in Mirabilis jalapa is an example of:
A)
non-Mendelian inheritance
done
clear
B)
Mendelian inheritance
done
clear
C)
chemical inheritance
done
clear
D)
both [b] and [c]
done
clear
View Answer play_arrow
question_answer 121) Taxon is a:
A)
group of same species
done
clear
B)
any rank in taxomonic hierarchy
done
clear
C)
group of similar genera
done
clear
D)
subdivision of kingdom
done
clear
View Answer play_arrow
question_answer 122) Statoliths are involved in:
A)
phototropism
done
clear
B)
hydrotropism
done
clear
C)
chemotropism
done
clear
D)
gravitropism
done
clear
View Answer play_arrow
question_answer 123) Lampbrush chromosomes are seen in:
A)
interphase
done
clear
B)
zygotene
done
clear
C)
diplotene
done
clear
D)
metaphase
done
clear
View Answer play_arrow
question_answer 124) The transcription unit is:
A)
TATA box to start point
done
clear
B)
TATA box to stop codon
done
clear
C)
Start point to stop codon
done
clear
D)
35 sequence to start point
done
clear
View Answer play_arrow
question_answer 125) Which is a symbiont inside human intestine?
A)
Streptococcus pneumoniae
done
clear
B)
Neisseria meningitidis
done
clear
C)
E. coli
done
clear
D)
Treponema pallidum
done
clear
View Answer play_arrow
question_answer 126) Biosphere reserves are different from National Park as:
A)
plants and animals are protected in biosphere reserves
done
clear
B)
humans are integral part of biosphere reserves
done
clear
C)
humans are not involved in biosphere reserves
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 127) Excessive accumulation of organic matter in water bodies leads to :
A)
decrease in species diversity
done
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B)
increase in species diversity
done
clear
C)
green house effect
done
clear
D)
no effect on species diversity
done
clear
View Answer play_arrow
question_answer 128) Study of periodical changes in plants in relation to seasonal changes :
A)
Physiognomy
done
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B)
Phycology
done
clear
C)
Phenology
done
clear
D)
Photoperiodism
done
clear
View Answer play_arrow
question_answer 129) Human population growth is:
A)
lag
done
clear
B)
stationary
done
clear
C)
exponential
done
clear
D)
none of these
done
clear
View Answer play_arrow
question_answer 130) Maximum noise permissible during day time in residential areas:
A)
75 dB
done
clear
B)
55 dB
done
clear
C)
65 dB
done
clear
D)
45 dB
done
clear
View Answer play_arrow
question_answer 131) Both mimic and model are harmful to the predator;
A)
Batesian mimicry
done
clear
B)
warning mimicry
done
clear
C)
concealing mimicry
done
clear
D)
Mullerian mimicry
done
clear
View Answer play_arrow
question_answer 132) Phylogenetic system is based on :
A)
evolutionary and genetic character
done
clear
B)
reproductive characters
done
clear
C)
morphological characters
done
clear
D)
natural affinities
done
clear
View Answer play_arrow
question_answer 133) The gene interaction when one gene masks the effect:
A)
complementary gene action
done
clear
B)
supplementary gene action
done
clear
C)
duplicate gene action
done
clear
D)
epistasis
done
clear
View Answer play_arrow
question_answer 134) Probes used in DNA finger-printing initially:
A)
single stranded RNA
done
clear
B)
mini satellite
done
clear
C)
19 base long oligonucleotide
done
clear
D)
all of the above
done
clear
View Answer play_arrow
question_answer 135) What helps in flowering?
A)
Cytochrome
done
clear
B)
ABA
done
clear
C)
Phytochrome
done
clear
D)
Ethylene
done
clear
View Answer play_arrow
question_answer 136) Kyoto protocol has specified the commitments of different countries:
A)
to mitigate climate changes
done
clear
B)
limit production of chlorofluorocarbons
done
clear
C)
to prepare a world climatic programme
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 137) Overlapping region between two ecosystems :
A)
biome
done
clear
B)
ecotone
done
clear
C)
niche
done
clear
D)
photiczone
done
clear
View Answer play_arrow
question_answer 138) Five kingdom classification includes :
A)
Monera, Protista, Fungi, Plantae, Animalia
done
clear
B)
Algae, Fungi, Bryophyta, Pteridophyta, Gymnosperms
done
clear
C)
Virus, Prokaryota, Fungi, Plantae, Animalia
done
clear
D)
Monera, Protista, Animalia, Plantae, Algae
done
clear
View Answer play_arrow
question_answer 139) In ecotone some species become abundant:
A)
sibling species
done
clear
B)
endemic species
done
clear
C)
rare species
done
clear
D)
edge species
done
clear
View Answer play_arrow
question_answer 140) Citric acid is industrially best produced by:
A)
Streptococcus lactis
done
clear
B)
Aspergillus niger
done
clear
C)
Penicillium purpurogenom
done
clear
D)
Lactobacillus debreukii
done
clear
View Answer play_arrow
question_answer 141) Actinomycetes which is a symbiotic nitrogen fixing organism in many plants.:
A)
Streptomyces
done
clear
B)
Anabaena
done
clear
C)
Frankia
done
clear
D)
Rhizobium
done
clear
View Answer play_arrow
question_answer 142) Claviceps is a member of:
A)
Ascomycetes
done
clear
B)
Basidiomycetes
done
clear
C)
Zygomycetes
done
clear
D)
Phycomycetes
done
clear
View Answer play_arrow
question_answer 143) Phycomycetes is a class in kingdom :
A)
Protista
done
clear
B)
Fungi
done
clear
C)
Plantae
done
clear
D)
Animala
done
clear
View Answer play_arrow
question_answer 144) In eukaryotes basic structural unit made of histone and DNA:
A)
nucleosome
done
clear
B)
nucleolus
done
clear
C)
chromosome
done
clear
D)
lysosome
done
clear
View Answer play_arrow
question_answer 145) Which is a bioinsecticide?
A)
Cactoblastis cactorum
done
clear
B)
Anabaena
done
clear
C)
Bacillus thruingiensis
done
clear
D)
Rhizobium
done
clear
View Answer play_arrow
question_answer 146) Hardening in tissue culture is :
A)
keeping at \[30-{{50}^{o}}C\] temperature for about 30 minutes
done
clear
B)
acclimatisation of tissue culture plants slowly before growing in the field
done
clear
C)
plunging the vials into water at \[37-{{40}^{o}}C\]
done
clear
D)
none of the above
done
clear
View Answer play_arrow
question_answer 147) In protoplast fusion which chemical is used :
A)
DMSO
done
clear
B)
liquid \[{{N}_{2}}\]
done
clear
C)
pectinase
done
clear
D)
PEG
done
clear
View Answer play_arrow
question_answer 148) Sex chromosomes for the first time was discovered in which plant?
A)
Sphaerocarpus
done
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B)
Pisum sativum
done
clear
C)
Nurospora
done
clear
D)
Lathyrus odoratus
done
clear
View Answer play_arrow
question_answer 149) Two or more codons coding for one amino acid:
A)
non-ambiguous
done
clear
B)
degeneracy of codon
done
clear
C)
non-overlapping of codon
done
clear
D)
non sense codon
done
clear
View Answer play_arrow
question_answer 150) Theory of Pangenesis was proposed by :
A)
Lamarck
done
clear
B)
Weismann
done
clear
C)
Hugo de Vries
done
clear
D)
Darwin
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question_answer 151) Philosophic zoologique written by:
A)
Darwin
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B)
Linnaeus
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C)
Lamarck
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D)
Theophrastus
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question_answer 152) Down syndrome is due to :
A)
trisomy of 13th chromosome
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B)
non disjunction of 21st chromosome
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C)
trisomy of 18th chromosome
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D)
fusion of normal sperm with egg having 2X chromosome
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question_answer 153) Marine teleost fishes excrete :
A)
uric acid
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B)
ammonia
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C)
urea
done
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D)
none of these
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question_answer 154) Antennary glands of crustaceans are meant for:
A)
excretion
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B)
respiration
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C)
digestion
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D)
circulation
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question_answer 155) Part of nephron impermeable to salt:
A)
distal convoluted tubules
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B)
descending limb of loop of Henie
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C)
assending limb of loop of Henie
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D)
collecting duct
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question_answer 156) Cilia of gills of bivalve molluscs help in:
A)
feeding
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B)
digestion
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C)
reproduction
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D)
excretion
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question_answer 157) Nodes of Ranvier are found in:
A)
non-myelinated nerve fibres
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B)
myelinated nerve fibres
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C)
both [a] and [b]
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D)
none of the above
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question_answer 158) Knee joint is:
A)
cartilageneous
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B)
fibrous
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C)
gliding joint
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D)
synovial
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question_answer 159) Myxoedema is a disorder of:
A)
parathyroid gland
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B)
adrenal gland
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C)
pituitary gland
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D)
thyroid gland
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question_answer 160) Which gland atrophies in adult?
A)
Pituitary
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B)
Thymus
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C)
Thyroid
done
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D)
Adrenal
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question_answer 161) Hoolock Gibbon (Indias only ape), is found in :
A)
Kaziranga bird Sanctuary
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B)
Hazaribagh National Park
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C)
Corbett National Park
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D)
Gir National Park
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question_answer 162) SA node is located in:
A)
lower lateral wall of right atrium
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B)
upper lateral wall of right atrium
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C)
upper lateral wall of left atrium
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D)
lower lateral wall of left atrium
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question_answer 163) The Wolffian duct gives rise to :
A)
scrotum
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B)
labia major
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C)
both [a] and [b]
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D)
epididymis
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question_answer 164) Hassals bodies/corpuscles:
A)
adrenal medula
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B)
thyroid
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C)
thymus
done
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D)
parathyroid
done
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question_answer 165) Allergens are ;
A)
infectious and increased secretion of IgE
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B)
non-infectious and increased secretions of IgF
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C)
injections and increased secretion of IgG
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D)
non-infectious and increased secretion of IgM
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question_answer 166) Hardy-Weinberg principle explains f
A)
genetic equilibrium
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B)
non-random mating
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C)
evolutionary force
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D)
all of the above
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question_answer 167) Pseudocoelomic organisms belong to:
A)
Arthropoda
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B)
Annelida
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C)
Mollusca
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D)
Aschelminthes
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question_answer 168) Pancreas is absent in which group of vertebrates?
A)
Reptiles
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B)
Cyclostomates
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C)
Birds
done
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D)
Mammals
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question_answer 169) Mouth parts of housefly are :
A)
siphoning type
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B)
sponging type
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C)
biting and chewing
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D)
piercing and sucking
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question_answer 170) Inclusive fitness theory is proposed by :
A)
Darwin
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B)
Lamarck
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C)
Weismann
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D)
Hamilton
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question_answer 171) Polytene chromosomes are found in :
A)
salivary gland
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B)
oocytes
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C)
green glands
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D)
none of these
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question_answer 172) Nissls granules are present in :
A)
RBC
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B)
WBC
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C)
both [a] and [b]
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D)
nerve cells
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question_answer 173) Chagas disease is caused by:
A)
Trypanosoma gambiense
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B)
Plasmodium sp.
done
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C)
Tiypanosoma cruzi
done
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D)
Treponema pallidum
done
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question_answer 174) Solenocytes are used for :
A)
elimination of nitrogenous excretory wastes
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B)
respiration
done
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C)
digestion
done
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D)
all of the above
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question_answer 175) Which of the following are required in minimum amount by human?
A)
Iron, Iodine, Carbon, Manganese, Copper, \[{{O}_{2}}\]
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B)
Iron, Iodine, Manganese, Copper, Zinc, Fluorine
done
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C)
Iron, Iodine, Manganese, Zinc, Hydrogen
done
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D)
Nitrogen, Oxygen, Zinc, Fluorine
done
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question_answer 176) Human dental formula is :
A)
\[\frac{3142}{3143}\]
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B)
\[\frac{1003}{0003}\]
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C)
\[\frac{2123}{2123}\]
done
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D)
\[\frac{3143}{3143}\]
done
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question_answer 177) HCl is secreted by:
A)
chief cells
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B)
mucous cells
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C)
salivary glands
done
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D)
oxyntic cells
done
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question_answer 178) Pancreatic secretion and gall bladder contraction are stimulated by:
A)
gastrin
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B)
enterocrinin
done
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C)
enterogasterone
done
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D)
cholesystokinin
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question_answer 179) Vit. \[{{B}_{12}}\] is available to ruminants by:
A)
plants
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B)
microorganisms in caecum
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C)
animals
done
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D)
all of the above
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question_answer 180) Energy released by carbohydrate, fats, protein is:
A)
4.1, 9.45, 5.65
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B)
4.1, 5.65, 9.40
done
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C)
5.4, 6.5, 8.9
done
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D)
5.0, 7.8, 10.5
done
clear
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question_answer 181) Mode of nutrition in Trypanosoma is:
A)
saprozoic
done
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B)
parasitic
done
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C)
autotropic
done
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D)
phototropic
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question_answer 182) Fluid mosaic model was proposed by :
A)
Singer and Nicholson
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B)
Robertson
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C)
Danielli and Davson
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D)
Huxley
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question_answer 183) Postganglionic nerve fibres of sympathetic system are:
A)
adrenergic
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B)
cholinergic
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C)
both [a] and [b]
done
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D)
none of these
done
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question_answer 184) The taste receptors of cockroach are :
A)
compounds eyes
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B)
companiform sensillae
done
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C)
palps of maxillary and labium
done
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D)
tactile hairs
done
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question_answer 185) Acquired immunity is due to:
A)
physiological and inflammatory barrier
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B)
lymphocytes
done
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C)
erythrocytes
done
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D)
NK cells
done
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question_answer 186) Which is not used up in human body?
A)
Calcium
done
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B)
Phosphorus
done
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C)
Zinc
done
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D)
Barium
done
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question_answer 187) Secondary metabolite is:
A)
sugar
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B)
glucose
done
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C)
antibiotics
done
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D)
all of these
done
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question_answer 188) Lactose is composed of following compunents:
A)
glucose + fructose
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B)
glucoe + glucose
done
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C)
glucose + fructose + galactose
done
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D)
glucose + galactose
done
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question_answer 189) Species living in a restricted geographical areais :
A)
sympatric
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B)
allopatric
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C)
sibling
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D)
keystone
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question_answer 190) Ichthyophis belongs to class:
A)
Mammalia
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B)
Reptilia
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C)
Amphibia
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D)
Aves
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question_answer 191) The supporting and nutritive cells found in the brain are:
A)
ependymal cells
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B)
microglia
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C)
astrocytes
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D)
oligodendrocytes
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question_answer 192) 2\[n\] - 2 is known as :
A)
monosomic
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B)
trisomic
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C)
nullisomy
done
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D)
polyploidy
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question_answer 193) Arteries are :
A)
thin walled and blood flows under high pressure
done
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B)
thick walled and blood flows under high pressure
done
clear
C)
thick walled and blood flows under diminished pressure
done
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D)
thin walled and blood flows under diminished pressure
done
clear
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question_answer 194) Tapetum is :
A)
protective
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B)
reproductive
done
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C)
nutritive
done
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D)
respiratory
done
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question_answer 195) Prolonged deficiency of thiamine in human diet may lead to:
A)
pellagra
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B)
beri-beri
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C)
anaemia
done
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D)
haemorrhage
done
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question_answer 196) Mycorrhiza is useful association because :
A)
it fixes atmospheric nitrogen
done
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B)
it enhances absorption of nutrients from soil
done
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C)
it kills pathogens
done
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D)
it provides resistance against drought
done
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question_answer 197) Theory of catastropism was supported by:
A)
Luis Pasteur
done
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B)
A. I. Oparin
done
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C)
Cuvier
done
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D)
Haldane
done
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question_answer 198) Which of the following is vestigial organ in human?
A)
coccyx
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B)
splint bone
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C)
wings
done
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D)
pelvic girdle
done
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question_answer 199) The mutation (mechanism of origin of variations) was suggest by:
A)
Mendel
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B)
Darwin
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C)
Lamarck
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D)
de Vries
done
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question_answer 200) Sporangia bearing leaves in pteridophytes are called:
A)
ramenta
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B)
Son
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C)
sporophylls
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D)
indusium
done
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