Solved papers for MGIMS WARDHA MGIMS WARDHA Solved Paper-2006

MGIMS WARDHA Solved Paper-2006 Total Questions - 180

1) S.I. unit of magnetic flux is:

A)

tesla

B)

forested

C)

weber

D)

gauss

View Answer
2) A body of mass m is moving towards east and another body of equal mass is moving towards north. If after collision voth stick together, their P speed after collision would be :

A)

\[v\]

B)

\[v/2\]

C)

\[\sqrt{2\,v}\]

D)

\[v/\sqrt{2}\]

View Answer
3) A body of mass 1 kg is moving in a vertical r circular path of radius 1 m. The difference between the kinetic energies at its highest                 and lowest position is :

A)

20 J

B)

10 J

C)

\[4\sqrt{5}\] J

D)

10\[(\sqrt{5}\]-1)J

View Answer
4) Across each of two capacitors of capacitance\[1\mu F,\]a potential difference of 10 V is applied. Then positive plate of one is connected to the negative plate of the other, and negative plate of B6 one is connected to the positive plate of the R other. After contact:

A)

charge on each is zero

B)

charge on each is same but non-zero

C)

charge on each is different but non-zero

D)

none of the above

View Answer
5) Magnification of a compound microscope is 30. Focal length of eye-piece is 5 cm and the image is formed at a distance of distinct vision of 25 cm. The magnification of the objective lens is :

A)

6

B)

5

C)

7.5

D)

10

View Answer
6) Kirchhoffs law of junction, \[\sum{I=0,}\] is based on :

A)

conservation of energy

B)

conservation of charge

C)

conservation of energy as well as charge

D)

conservation of momentum

View Answer
7) Calculate the amount of heat (in calories) required to convert 5g of ice at 0°C to steam at 100°C:

A)

3100

B)

3200

C)

3600

D)

4200

View Answer
8) A transverse wave is expressed as\[:y={{y}_{0}}\] sin \[2\pi fy.\] for what value of \[\lambda \] maximum particle velocity is equal to 4 times the wave velocity?

A)

\[{{y}_{O}}\pi /2\]

B)

\[2y0\pi \]

C)

\[{{y}_{0}}\pi \]

D)

\[{{y}_{0}}\pi /4\]

View Answer
9) Two bodies are thrown up at angles of 40° and 60°, respectively, with the horizontal. If both bodies attain same vertical height, then ratio of velocities with which these are thrown is :

A)

\[\sqrt{2/3}\]

B)

\[2/\sqrt{3}\]

C)

\[\sqrt{3/2}\]

D)

\[\sqrt{3}/2\]

View Answer
10) Charges 4Q, q and Q are placed along \[x\]-axis at positions \[=0,x=1/2\] and\[x=l,\]respectively. Find the value of q so that force on charge Q is zero:

A)

\[Q\]

B)

\[\frac{Q}{2}\]

C)

\[-\frac{Q}{2}\]

D)

\[-Q\]

View Answer
11) A ray falls on a prism ABC W = BC) and   travels as shown in figure. The least value of refractive index of material of the prism, should be:

A)

\[1.5\]

B)

\[\sqrt{2}\]

C)

\[1.33\]

D)

\[\sqrt{3}\]

View Answer
12) Escape velocity from a planet is \[{{v}_{e.}}\] If its mass is increased to 8 times and its radius is increased to2 times, then the new escape        velocity would be :

A)

\[{{v}_{e.}}\]

B)

\[\sqrt{2}{{v}_{e.}}\]

C)

\[2{{v}_{e.}}\]

D)

\[2\sqrt{2}{{v}_{e.}}\]

View Answer
13) A body takes time t to reach the bottom of an inclined plane of angle \[\theta \] with the horizontal.      If the plane is made rough, time taken now is 2t. The coefficient of friction of the rough                surface is :

A)

\[\frac{3}{4}\,\tan \,\theta \]

B)

\[\frac{2}{3}\,\tan \,\theta \]

C)

\[\frac{1}{4}\,\tan \,\theta \]

D)

\[\frac{1}{2}\,\tan \,\theta \]

View Answer
14) Two small charged spheres A and B have charges 10 \[\mu C\] and 40 \[\mu C\] respectively, and            are held at a separation of 90 cm from each other. At what distance from A, electric                intensity would be zero?

A)

22.5cm

B)

18 cm

C)

36 cm

D)

30 cm

View Answer
15) 50 tuning forks are arranged in increasing order of their frequencies such that each gives 4 beats/s with its previous tuning fork. If the frequency of the last fork is octave of the first, then the frequency of the first tuning fork is :

A)

200 Hz

B)

204 Hz

C)

196 Hz

D)

none of these

View Answer
16) In a cyclotron, if a deuteron can gain an                 energy of 40 MeV, then a proton can gain an energy of:

A)

40 MeV

B)

80 MeV

C)

20 MeV

D)

60 MeV

View Answer
17) Graph between velocity and displacement of   particle, executing SHM is :

A)

a straight line

B)

a parabola

C)

a hyperbola

D)

an ellipse

View Answer
18) In the nuclear reaction,\[_{\text{72}}^{\text{180}}\text{ }\!\!\times\!\!\text{ }\xrightarrow{\text{- }\!\!\alpha\!\!\text{ }}\text{Y}\xrightarrow{\text{- }\!\!\beta\!\!\text{ }}\text{Z}\xrightarrow{\text{- }\!\!\alpha\!\!\text{ }}\text{A}\xrightarrow{\text{- }\!\!\gamma\!\!\text{ }}\] The atomic mass and number of P are, respectively:

A)

170, 69

B)

172, 69

C)

172, 70

D)

170, 70

View Answer
19) A radioactive substance has activity 64 times higher than the required normal level. If \[{{T}_{1/2}}=2h,\] then the time, after which it should             be possible to work with it, is:

A)

16 h

B)

6 h

C)

10h

D)

12h

View Answer
20) An electron, moving in a uniform magnetic field of induction of intensity \[\mathbf{\vec{B}}\] has its radius directly proportional to:

A)

its charge

B)

magnetic field

C)

speed

D)

none of these

View Answer
21) The apparent frequency in Doppler's effect does not depend upon :

A)

speed of the observer

B)

distance between observer and source

C)

speed of the source

D)

frequency from the source

View Answer
22) Two simple pendulums whose lengths are 100 cm and 121 cm are suspended side by side.         Their bobs are pulled together and then released After how many minimum oscillations of the longer pendulum, will the two be in phase again?

A)

11

B)

10

C)

21

D)

20

View Answer
23) If percentage change in current through a resistor is 1%, then the change in power through it would be :

A)

1%

B)

2%

C)

1.7%

D)

0.5%

View Answer
24) 3 identical bulbs are connected in series and these together dissipate a power P. If now the bulbs are connected in parallel, then the              power dissipated will be :

A)

P/3

B)

3P

C)

9P

D)

P/9

View Answer
25) Acceleration due to gravity :

A)

decreases from equator to poles

B)

decreases from poles to equator

C)

is maximum at the centre of the earth

D)

is maximum at the equator

View Answer
26) Two bodies having masses \[{{m}_{1}}\] = 40g and \[{{m}_{2}}\] =            60g are attached to the ends of a string of negligible mass and suspended from massless       pulley. The acceleration of the bodies is:

A)

1 nVs2

B)

2m/s2

C)

0.4 m/s2

D)

4 m/s2

View Answer
27)  A block is moving up an inclined plane of inclination 60° with velocity of 20 m/s and stops after 2s. If \[g=20m/{{s}^{2}}\]then the approximate of value of coefficient of friction is :

A)

3

B)

3.3

C)

0.27

D)

0.33

View Answer
28) A coin placed on a rotating turntable just slips if it is placed at a distance of 8 cm from the centre. If angular velocity of the turntable is doubled, it will just slip at a distance of :

A)

1 cm

B)

2 cm

C)

4cm

D)

8cm

View Answer
29) When a man increases his speed by 2 m/s, he finds that his kinetic energy is doubled, the & original speed of the man is:

A)

\[2(\sqrt{2}-1)\]m/s

B)

\[2(\sqrt{2}+1)\] m/s

C)

4.5 m/s

D)

none of these

View Answer
30) A ball falling freely from a height of 4.9 m/s hits 3 a horizontal surface. If \[e=\frac{3}{4},\] then the ball will 4 hit the surface second time after:

A)

0.5s

B)

1.5s

C)

3.5s

D)

3.4s

View Answer
31) The distance between the sun and the earth be r then the angular momentum of the earth around the sun is proportional to :

A)

\[\sqrt{r}\]

B)

\[{{r}^{3/2}}\]

C)

\[r\]

D)

none of these

View Answer
32) A body executing SHM has its velocity 10 cm/s and 7 cm/s, when its displacements from the     mean position are 3 cm and 4 cm respectively. The length of path is:

A)

10cm

B)

9.5 cm

C)

4cm

D)

11.36cm

View Answer
33) A 700 g solid cube having an edge of length 10    cm floats in water. The volume of cube                 outside water is :

A)

24 cm3

B)

4.8 cm3

C)

300 cm3

D)

500 cm3

View Answer
34) A one metre long steel wire of cross-sectional area 1 mm2 is extended by 1 mm. If \[\text{Y=2 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{11}}}\,\text{N/}{{\text{m}}^{\text{2}}}\text{,}\]then the work done is :

A)

0.1J

B)

0.2J

C)

0.3J

D)

0.4J

View Answer
35) The slit width, when a light of wavelength 6500Å is incident on a slit, if first minima for red light is at 30°, is :

A)

\[1\times {{10}^{-6}}m\]

B)

\[5.2\times {{10}^{-}}^{6}m\]

C)

\[1.3\times {{10}^{-}}^{6}m\]

D)

\[26\times {{10}^{-}}^{6}m\]

View Answer
36) A light source approaches the observer with velocity 0.5 c. Doppler's shift for light of wavelength \[5500\overset{o}{\mathop{\text{A}}}\,\] is :

A)

\[616\overset{o}{\mathop{\text{A}}}\,\]

B)

\[1833\overset{o}{\mathop{\text{A}}}\,\]

C)

\[5500\overset{o}{\mathop{\text{A}}}\,\]

D)

\[6160\overset{o}{\mathop{\text{A}}}\,\]

View Answer
37) A charged particle moves in an electric field from A to B, then from B to A:

A)

If W \[_{AB}>\,W{{ }_{AB}},\]then the field is conservative

B)

If W \[_{AB}+\,W{{ }_{BA}}=0,\]then the field is conservative

C)

If W \[_{AB}+\,W{{ }_{BA}}\]then the field is conservative

D)

If W\[_{AB}=W{{ }_{BA,}}\] then the field is conservative

View Answer
38) A solid metal sphere of radius 50 cm carries a charge \[25\times {{10}^{-10}}C.\]The electrostatic potential at a distance of 20 cm from the centre will be:

A)

25 V

B)

15 V

C)

35 V

D)

45 V

View Answer
39) Two plates (area = S) charged to +\[{{q}_{1,}}\] and +\[{{q}_{2,}}\]\[({{q}_{2}}<{{q}_{2}})\]brought closer to form a capacitor of capacitance C. The potential difference across the plates is :

A)

\[\frac{{{q}_{1}}-{{q}_{2}}}{2C}\]

B)

\[\frac{{{q}_{1}}-{{q}_{2}}}{C}\]

C)

\[\frac{{{q}_{1}}-{{q}_{2}}}{4C}\]

D)

\[\frac{2({{q}_{1}}-{{q}_{2}})}{C}\]

View Answer
40) What is the drift velocity of electrons if the current flowing through a copper wire of 1 mm diameter is 1.1 A- Assume that each atom of copper contributes one electron : (Given : density of Cu = 9 g/cm3 and atomic weight of Cu = 63)

A)

0.3 mm/s

B)

0.5 mm/s

C)

0.1 mm/s

D)

0.2 mm/s

View Answer
41) A uniform magnetic field is at right angle to the direction of motion of proton. As a result, the proton describes a circular path of radius 2.5 cm. If the speed of proton is doubled then      the radius of the circular path will be :

A)

0.5 cm

B)

2.5 cm

C)

5.0 cm

D)

7.5 cm

View Answer
42) An electron accelerated through a potential difference enters into a uniform transverse magnetic field and experience a force F. If the accelerating potential is increased lo 2V, the           electron in the same magnetic field will experience a force :

A)

\[F\]

B)

\[F/2\]

C)

\[\sqrt{2}F\]

D)

\[F2\]

View Answer
43) The certain amount of current when flowing in a properly set tangent galvanometer, produces a deflection of \[45{}^\circ C\]. The current be reduced by a factor of\[\sqrt{3,}\] the deflection would :

A)

decrease by \[30{}^\circ \]

B)

decrease by \[15{}^\circ \]

C)

decrease by \[15{}^\circ \]

D)

increase by \[30{}^\circ \]

View Answer
44) If a current of 3 A flowing in the primary coil is reduced to zero in 0.01 s then the induced emf in the secondary coil is 1500 V, the mutual inductance between the two coils is:

A)

0.5 H

B)

5 H

C)

1.5H

D)

10 H

View Answer
45) In order to obtain time constant of 10 s in an RC circuit containing a resistance of \[{{10}^{3}}\Omega ,\] the capacity of the condenser should be :

A)

\[10\,\mu F\]

B)

\[100\,\mu F\]

C)

\[100\,0\mu F\]

D)

\[1000\,0\mu F\]

View Answer
46) An \[\alpha \]-particle when accelerated through a potential difference of V volt has a wavelength\[\lambda .\] associated with it. In order to have same \[\lambda ,\] by what potential difference a proton must be accelerated?

A)

8 V

B)

6 V

C)

4V

D)

12V

View Answer
47) Hailstone at 0°C falls a from a height of 1 km on an insulating surface converting whole of its kinetic energy into heat. What part of it will melt?\[(g=10m/{{s}^{2}})\]

A)

\[\frac{1}{33}\]

B)

\[\frac{1}{8}\]

C)

\[\frac{1}{3}\times 10-4\]

D)

All of it will melt

View Answer
48) At \[27{}^\circ C\], a motor car tyre has a pressure of 2atmospheres. The temperature at which the tyre suddenly burst wilt be : (Given : \[{{\text{ }\!\!\gamma\!\!\text{ }}_{\text{air}}}\]= 1.4)

A)

246.1 K

B)

250 K

C)

246 K

D)

248 K

View Answer
49) A flat mirror revolves at a constant angular velocity making 2 revolutions/s. With what velocity will a light spot move along a spherical screen with a radius of 10 m if the      mirror is at a centre of curvature of the screen?

A)

251.2 m/s

B)

261/2 m/s

C)

271.2 m/s

D)

241/2 m/s

View Answer
50) A vessel consists of two plane mirrors at right angles (as shown in figure). The vessel is filled with water. The total deviation in incident ray is:

A)

\[0{}^\circ \]

B)

\[90{}^\circ \]

C)

\[180{}^\circ \]

D)

none of these

View Answer
51) If error in measurement of radius of sphere is 1%, what will be the error in measurement of volume?

A)

1%

B)

1/3%

C)

3%

D)

10%

View Answer
52) Consider the following equation of Bernoulli's theorem. \[P+\frac{1}{2}\rho {{v}^{2}}+\rho gh=K\] (constant)                 The dimensions of K/P are same as the of which of the following ?

A)

Thrust

B)

Pressure

C)

Angle

D)

Viscosity

View Answer
53) Why the dam of water reservoir is thick at the bottom?

A)

Quantity of water increases with depth

B)

Density of water increases with depth

C)

Pressure of water increases with depth

D)

Temperature of water increases with depth

View Answer
54) The length of second's pendulum is 1 m on earth. If mass and diameter of a planet is doubled than that of earth, then its length becomes:

A)

1 m

B)

2 m

C)

0.5 m

D)

4 m

View Answer
55) A beaker is completely filled with water at \[{{4}^{o}}C.\]It will overflow if:

A)

heated above 4°C

B)

cooled below 4°C

C)

both heated and cooled above and below 4°C respectively

D)

none of the above

View Answer
56) A coin is dropped in a lift. It takes time\[{{t}_{1}}\]to reach the floor when lift is stationary. It late             times \[{{t}_{2}}\] when life is moving up with constant acceleration. Then:

A)

\[{{t}_{1}}>{{t}_{2}}\]

B)

\[{{t}_{2}}>{{t}_{1}}\]

C)

\[{{t}_{1}}={{t}_{2}}\]

D)

\[{{t}_{1}}>>{{t}_{2}}\]

View Answer
57) An object is placed at a distance equal to focal length of convex mirror. If the focal length of the mirror be\[f,\]then the distance of the image from the pole of the mirror is :

A)

less than \[f\]

B)

equal to \[f\]

C)

more than \[f\]

D)

infinity

View Answer
58) What is the angle between the electric dipole moment and the electric field strength due to it on the equatorial line?

A)

\[0{}^\circ \]

B)

\[90{}^\circ \]

C)

\[180{}^\circ \]

D)

None of these

View Answer
59) A wire carrying current\[I\] and other carrying \[2I\]in the same direction produce a magnetic field B at the mid-point. What will be the field when \[2I\] wire is switched of?

A)

B / 2

B)

2B

C)

B

D)

4B

View Answer
60) The Fermi level of an intrinsic semiconductor is pinned at the centre of the band gap. The probability of occupation of the highest electron state in valence band at room temperature will be:

A)

zero

B)

between zero and half

C)

half

D)

one

View Answer
61) Which of the following is not an actinide?

A)

Curium

B)

Californium

C)

Uranium

D)

Terbium

View Answer
62) Europium is :

A)

s-block element

B)

p-block element

C)

d-block element

D)

\[f-\]block element

View Answer
63) For an electron, if the uncertainty in velocity is \[\Delta v,\]the uncertainty in its position\[(\Delta x)\]is given by:

A)

\[\frac{hm}{4\pi \Delta v}\]

B)

\[\frac{4\pi }{hm\Delta v}\]

C)

\[\frac{h}{4\pi m\Delta v}\]

D)

\[\frac{4\pi m}{h\Delta v}\]

View Answer
64) The reagent in Friedel-Craffs reaction is:

A)

pyridine

B)

\[RCOCl\]

C)

\[RCOOH\]

D)

\[HCl\]

View Answer
65) The\[{{K}_{sp}}\]of\[Mg{{(OH)}_{2}}\]is\[1\times {{10}^{-12}}.\text{ }0.01\text{ }M\] \[Mg{{(OH)}_{2}}\]will precipitate at the limited pH:

A)

3

B)

9

C)

5

D)

8

View Answer
66) Equation of Boyle?s law is:

A)

\[\frac{dp}{p}=-\frac{dV}{V}\]

B)

\[\frac{dp}{p}=+\frac{dV}{V}\]

C)

\[\frac{{{d}^{2}}p}{p}=-\frac{dV}{dT}\]

D)

\[\frac{{{d}^{2}}p}{p}=+\frac{{{d}^{2}}V}{dT}\]

View Answer
67) A radioactive sample is emitting 64 times radiations than non-hazardous limit. If its half-life is 2 hours, after what time it becomes non- hazardous?

A)

16h

B)

12h

C)

8h

D)

4h

View Answer
68) A metal surface is exposed to solar radiations:

A)

the emitted electrons have energy less than a maximum value of energy depending upon/ frequency of incident radiations

B)

the emitted electrons have energy less than maximum value of energy depending upon intensity of incident radiations

C)

the emitted electrons have zero energy

D)

the emitted electrons have energy equal to energy of photons of incident light

View Answer
69) Which of the following transitions have minimum wavelengths?

A)

\[{{n}_{4}}\to {{n}_{1}}\]

B)

\[{{n}_{2}}\to {{n}_{1}}\]

C)

\[{{n}_{4}}\to {{n}_{2}}\]

D)

\[{{n}_{3}}\to {{n}_{1}}\]

View Answer
70) Orbital is:

A)

circular path around the nucleus in which the electrons revolves

B)

space around the nucleus where the probability of finding the electron is maximum

C)

amplitude of electron wave

D)

none of the above

View Answer
71) Number of unpaired electrons in\[M{{n}^{4+}}\]is :

A)

3

B)

5

C)

6

D)

4

View Answer
72) Which of the following sequence is correct as per Aufbau principle?

A)

\[35\text{ }<\text{ }3d\text{ }<\text{ }45\text{ }<\text{ }4p\]

B)

\[1s\text{ }<\text{ }2p\text{ }<\text{ }4s\text{ }<\text{ }3d\]

C)

\[2s\text{ }<\text{ }55\text{ }<\text{ }4p\text{ }<\text{ }Sd\]

D)

\[2s\text{ }<\text{ }2p\text{ }<\text{ }3d\text{ }<\text{ }3p\]

View Answer
73) Ionic compounds are formed most easily with:

A)

low electron affinity, high ionisation energy

B)

high electron affinity, low ionisation energy

C)

low electron affinity, low ionisation energy

D)

high electron affinity, high ionisation energy

View Answer
74) The enthalpy change\[(\Delta H)\]for the neutralization of M\[HCl\] by caustic potash in dilute solution at 298 K is:

A)

68 kJ

B)

65 kJ

C)

57.3 kJ

D)

50 kJ

View Answer
75) Which of the following is not hydrolysed?

A)

\[AsC{{l}_{3}}\]

B)

\[P{{F}_{3}}\]

C)

\[SbC{{l}_{3}}\]

D)

\[N{{F}_{3}}\]

View Answer
76) Which of the following gas is linear?

A)

\[C{{O}_{2}}\]

B)

\[S{{O}_{2}}\]

C)

\[N{{O}_{2}}\]

D)

\[S{{O}_{3}}\]

View Answer
77) \[N{{H}_{4}}COON{{H}_{2}}(s)(g)+C{{O}_{2}}(g,)\]if equlibrium pressure is 3 atm for the above reaction.\[{{K}_{p}}\]for the reaction is:

A)

4

B)

27

C)

4/27

D)

1/27

View Answer
78) Number of isomeric primary amines obtained from\[{{C}_{4}}{{H}_{11}}N\]are:

A)

3

B)

4

C)

5

D)

6

View Answer
79) If hydrogen electrode dipped in two solution of\[pH=3\]and\[pH=6\]and salt bridge is connected, the emf of resulting cell is:

A)

0.177V

B)

0.3V

C)

0.052V

D)

0.104V

View Answer
80) A radioactive nucleus will not emit:

A)

alpha and beta rays simultaneously

B)

beta and gamma rays simultaneously

C)

gamma and alpha rays

D)

gamma rays only

View Answer
81) In face centred cubic unit cell edge length is:

A)

\[\frac{4}{\sqrt{3}}r\]

B)

\[\frac{4}{\sqrt{2}}r\]

C)

\[2r\]

D)

\[\frac{\sqrt{3}}{2}r\]

View Answer
82) If the\[Z{{n}^{2+}}/Zn\] electrode is diluted to 100 times then the change in emf :

A)

increase of 59 mV

B)

decrease of 59 mV

C)

increase of 29.5 mV

D)

decrease of 29.5 mV

View Answer
83) Which of the following reactions end infinite time?

A)

Zero order

B)

1st order

C)

2nd order

D)

3rd order

View Answer
84) If equivalent conductance of 1M benzoic acid is\[12.8\text{ }oh{{m}^{-1}}c{{m}^{2}}\]and if the conductance of benzoate ion and\[{{H}^{+}}\]ion are 42 and 288.42\[oh{{m}^{-1}}c{{m}^{2}}\]respectively. Its degree of dissociation is:

A)

39%

B)

3.9%

C)

0.35%

D)

0.039%

View Answer
85) In which of the following reactions carbon-carbon bond formation takes place?

A)

Cannizaro

B)

Reimer-Tiemann

C)

HVZ reaction

D)

Schmidt reaction

View Answer
86) Which gives only mono-substituted product?

A)

o-dinitrobenzene

B)

m-dinitrobenzene

C)

p-dinitrobenzene

D)

Nitrobenzene

View Answer
87) Which of the following is most polarised?

A)

Kr

B)

He

C)

Ar

D)

Xe

View Answer
88) Order of boiling point is:

A)

\[HF>HI>HBr>HCl\]

B)

\[HF>HBr>HI>HCl\]

C)

\[HCl>HBr>HI>HF\]

D)

\[HCl>HI>HBr>HF\]

View Answer
89) If two substances A and B have\[P_{A}^{o}:P_{B}^{o}=1:2\] and have mole fraction in solution 1 : 2 then mole fraction of A in vapours:

A)

0.33

B)

0.25

C)

0.52

D)

0.2

View Answer
90) Order of hydrolysis for the following: (I)\[RCOCl\]                        (II)\[RCOOR\] (III)\[RCON{{H}_{2}}\]                   (IV)\[{{(RCO)}_{2}}O\]

A)

I > IV> II > III

B)

I > II > III > IV

C)

I > III > II > IV

D)

IV > III > II > I

View Answer
91) If an aqueous solution of glucose is allowed to freeze then crystal of which will be separated out first?

A)

Glucose

B)

Water

C)

Both and

D)

None of these

View Answer
92) \[CH\equiv CH\xrightarrow[{{H}_{2}}S{{O}_{4}}]{HgS{{O}_{4}}}\xrightarrow[{{H}_{2}}O]{C{{H}_{3}}MgBr}\xrightarrow{P/B{{r}_{2}}}\]

A)

\[C{{H}_{3}}CH(Br)C{{H}_{3}}\]

B)

\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Br\]

C)

\[C{{H}_{2}}=CHBr\]

D)

\[BrCH=CHC{{H}_{3}}\]

View Answer
93) Number of bonds in benzene:

A)

\[6\sigma \]and\[3\pi \]

B)

\[12\sigma \]and\[3\pi \]

C)

\[3\sigma \]and \[12\pi \]

D)

\[6\sigma \]and\[6\pi \]

View Answer
94) If the\[{{V}_{rms}}\]is\[30{{R}^{1/2}}\]at\[27{}^\circ C\]then calculate the molar mass of gas in kilogram.

A)

1

B)

2

C)

4

D)

0.001

View Answer
95) If the enolate ion combines with carbonyl group of ester, we get:

A)

aldol

B)

\[\alpha ,\beta -\] unsaturated ester

C)

\[\beta -\]keto aldehyde

D)

acid

View Answer
96) (I) and (II) are:

A)

enantiomers

B)

diastereomers

C)

meso compound

D)

identical

View Answer
97) The standard molar heat of formation of ethane,\[C{{O}_{2}}\]and water are respectively\[-\text{ }21.1,\]\[-\text{ }94.1\]and\[-68.3\]kcal. The standard molar heat of combustion of ethane will be:

A)

\[-372\text{ }kcal\]

B)

\[162\text{ }kcal\]

C)

\[-240\text{ }kcal\]

D)

\[183.5\text{ }kcal\]

View Answer
98) \[_{72}{{X}^{180}}\xrightarrow{2\alpha }\xrightarrow[{}]{\beta }{{\xrightarrow{\gamma }}_{z}}{{X}^{A}},\]Z and A are:

A)

69, 172

B)

172, 69

C)

180, 70

D)

182, 68

View Answer
99) \[A+2B\xrightarrow[{}]{{}}C+D,\]If \[-\frac{d[A]}{dt}=5\times {{10}^{-4}}mol\,{{L}^{-1}}{{s}^{-1}},\] then\[-\frac{d[B]}{dt}\] is:

A)

\[2.5\times {{10}^{-4}}mol\,{{L}^{-1}}{{s}^{-1}}\]

B)

\[50\times {{10}^{-4}}mol\,{{L}^{-1}}{{s}^{-1}}\]

C)

\[2.5\times {{10}^{-3}}mol\,{{L}^{-1}}{{s}^{-1}}\]

D)

\[1.0\times {{10}^{-3}}mol\,{{L}^{-1}}{{s}^{-1}}\]

View Answer
100) Which of the following is paramagnetic?

A)

\[{{N}_{2}}\]

B)

\[{{C}_{2}}\]

C)

\[N_{2}^{+}\]

D)

\[O_{2}^{2-}\]

View Answer
101) Which of the following compounds will react with\[NaHC{{O}_{3}}\]solution to give sodium salt and carbon dioxide?

A)

Acetic acid

B)

n-hexanol

C)

Phenol

D)

Both and

View Answer
102) Which will give chiral molecule?

A)

\[C{{H}_{3}}COCl\xrightarrow{LiAl{{H}_{4}}}\]

B)

\[{{C}_{2}}{{H}_{5}}CHO\xrightarrow[{{H}^{+}}/{{H}_{2}}O]{C{{H}_{3}}MgBr}\]

C)

\[{{(C{{H}_{3}})}_{2}}CH{{C}_{2}}{{H}_{5}}\xrightarrow{Cu}\]

D)

View Answer
103) Which is not a polymer?

A)

Sucrose

B)

Enzyme

C)

Starch

D)

Teflon

View Answer
104) Which statement is wrong for NO?

A)

It is anhydride of nitrous acid

B)

Its dipole moment is 0.22 D

C)

It forms dimer

D)

It is paramagnetic

View Answer
105) Which of the following reactions will not give propane?

A)

\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\xrightarrow[{{H}_{2}}O]{Mg/ether}\]

B)

\[C{{H}_{3}}COCl\xrightarrow[{{H}_{2}}O]{C{{H}_{3}}MgX}\]

C)

\[C{{H}_{3}}CH\equiv C{{H}_{2}}\xrightarrow[C{{H}_{3}}COOH]{{{B}_{2}}{{H}_{6}}}\]

D)

\[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\xrightarrow{P/HI}\]

View Answer
106) A compound\[A\to {{C}_{5}}{{H}_{10}}C{{l}_{2}}\]on hydrolysis gives \[{{C}_{5}}{{H}_{10}}O\]which reacts with\[NH{{ }_{2}}OH,\]forms iodoform, but does not give Fehling test. A is:

A)

\[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\]

B)

\[C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{2}}-C{{H}_{3}}\]

C)

\[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-CH{{ }_{2}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{CH}}}\,\]

D)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{CH}}\,-\overset{\begin{smallmatrix} Cl \\ | \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}-C{{H}_{3}}\]

View Answer
107) In photography, sodium thiosulphate is used as:

A)

Completing agent

B)

oxidizing agent

C)

Reducing agent

D)

none of these

View Answer
108)

A)

B)

C)

D)

View Answer
109) There is no\[SS\]bond in:

A)

\[{{S}_{2}}O_{4}^{2-}\]

B)

\[{{S}_{2}}O_{5}^{2-}\]

C)

\[{{S}_{2}}O_{3}^{2-}\]

D)

\[{{S}_{2}}O_{7}^{2-}\]

View Answer
110) Which of the following is not a broad spectrum antibiotic?

A)

Tetracycline

B)

Chloromycetin

C)

Penicillin

D)

None of these

View Answer
111) Phenol and benzoic acid are distinguished by:

A)

\[NaOH\]

B)

\[NaHC{{O}_{3}}\]

C)

\[N{{a}_{2}}C{{O}_{3}}\]

D)

\[{{H}_{2}}S{{O}_{4}}\]

View Answer
112) Substance used as antiseptic for curing wounds is:

A)

equanil

B)

iodine

C)

proguanil

D)

bithional

View Answer
113) The IUPAC name of compound is: \[C{{H}_{2}}=CHCH{{(C{{H}_{3}})}_{2}}\]

A)

1-isopropylethylene

B)

2-vinyl propane

C)

3-methyl 1-butene

D)

1, 1, dimethyl 1, 2-propene

View Answer
114) Intermolecular hydrogen bonding is strongest in:

A)

\[{{C}_{2}}{{H}_{5}}OH\]

B)

\[HF\]

C)

\[{{H}_{2}}O\]

D)

\[C{{H}_{3}}COC{{H}_{3}}\]

View Answer
115) \[CuS{{O}_{4}}\]does not react with:

A)

\[Fe\]

B)

\[Ag\]

C)

\[Zn\]

D)

\[Mg\]

View Answer
116) Cobalt-60 is used in the treatment of:

A)

leukaemia

B)

thyroid disorders

C)

cancer

D)

pneumonia

View Answer
117) Silicon is:

A)

semi-conductor

B)

insulator

C)

conductor

D)

none of these

View Answer
118) When lead nitrate is heated it produces:

A)

\[N{{O}_{2}}\]

B)

NO

C)

\[{{N}_{2}}{{O}_{5}}\]

D)

\[{{N}_{2}}O\]

View Answer
119) Which of the following test is not used for testing of proteins?

A)

Milton's test

B)

Molisch's test

C)

Biuret test

D)

Ninhydrin test

View Answer
120) Non-directional orbital is:

A)

\[4p\]

B)

\[4d\]

C)

\[4f\]

D)

\[3s\]

View Answer
121) Which of the following is not vestigial in man?

A)

Tail vertebrae

B)

Nails

C)

Nictitating membrane

D)

Vermiform appendix

View Answer
122) The chemical used in National Malaria Eradication Programme is:

A)

2, 4-D

B)

BHC

C)

DDT

D)

Pyrethroid

View Answer
123) A eukaryotic gene contains two kinds of base sequences. Which of these plays an important role in protein synthesis ?

A)

Introns

B)

Exons

C)

Both 'a' and 'b'

D)

None of the above

View Answer
124) The number of hydrogen bonds between adenine and thymine in a DNA molecule is :

A)

two

B)

three

C)

four

D)

eight

View Answer
125) The enzyme, which combines with non-protein part to form a functional enzyme known as :

A)

co-enzyme

B)

holoenzyme

C)

apoenzyme

D)

prosthetic group m

View Answer
126) Which of the following enzyme digest protein in stomach ?

A)

Trypsin

B)

Pepsin

C)

Crepsin

D)

None of these

View Answer
127) Passive food ingestion in Amoeba is known as:

A)

import

B)

invagination

C)

circumfluence

D)

circumvallation

View Answer
128) The slime moulds are characterized by the presence of:

A)

elaters

B)

pseudoelaters

C)

capiltitium

D)

capitulum

View Answer
129) Ecdysone is secreted from :

A)

insecta

B)

trematoda

C)

nematoda

D)

polycheta

View Answer
130) In the life cycle of mosquito, comma-shaped stage is:

A)

larval stage

B)

pupal stage

C)

imago stage

D)

none of these

View Answer
131) Haemocoel is found in:

A)

Hydra and Aurelia

B)

Taenia and Ascaris

C)

cockroach and Pila

D)

Balanoglossus and Herdmonia

View Answer
132) The group of anamniota includes:

A)

reptiles and birds

B)

birds and mammals

C)

fishes and amphibians

D)

reptiles, and mammals

View Answer
133) The excretory material of bony fish is:

A)

urea

B)

protein

C)

ammonia

D)

amino acid

View Answer
134) Different colours of frog skin are controlled by:

A)

hormones

B)

melanocytes

C)

nervous system

D)

both 'a' and 'c'

View Answer
135) Blastula of frog has :

A)

blastopore

B)

blastocoel

C)

arahenteron

D)

gastropore

View Answer
136) Carotene pigment is found in the cells of:

A)

dermis

B)

epidermis

C)

adipose cell

D)

both 'b' and 'c'

View Answer
137) Debove's membrane is a layer of:

A)

muscular tissue

B)

epithelial tissue

C)

connective tissue

D)

all of the above

View Answer
138) Achilles tendon is associated with :

A)

gluteus muscle

B)

hamstring muscle

C)

quadriceps muscle

D)

gastrocnemius muscle

View Answer
139) The leucocytes contain which of the following in large quantity ?

A)

basophils

B)

neutrophils

C)

eosinophils

D)

monocytes

View Answer
140) Which part of our body secreted the hormone secretin ?

A)

ileum

B)

stomach

C)

duodenum

D)

oesophagus

View Answer
141) During inspiration, the diaphragm :

A)

expands

B)

shows no change

C)

contracts and flattens

D)

relaxes to become dome-saped

View Answer
142) The oxygen toxicity is related with :

A)

blood poisoning

B)

collapse of alveolar walls

C)

failure of ventilation of lungs

D)

both 'a' and 'b'

View Answer
143) Cardiac output is determined by :

A)

heart rate

B)

stroke volume

C)

blood flow

D)

both 'a' and 'b'

View Answer
144) The important function of lymph is to :

A)

transport oxygen to the brain

B)

transport carbon dioxide lo the lungs

C)

return RBCs to the lymph nodes

D)

return interstitial fluid to the blood

View Answer
145) The lining of intestine and kidneys in humans is:

A)

keratinized

B)

brush borde

C)

ciliated

D)

none of these

View Answer
146) The yellow colour of urine is due to the presence of:

A)

urea

B)

uric acid

C)

urochrome

D)

bilirubin

View Answer
147) The leydig cells secrete :

A)

oestrogen

B)

testosterone

C)

progesterone

D)

corticosterone

View Answer
148) The function of pineal body is to :

A)

lighten the skin colours

B)

control sexual behavior

C)

regulates the period of puberty

D)

all of the above

View Answer
149) Which of the following nerve is purely motor nerve ?

A)

vagus

B)

facial

C)

abducens

D)

trigeminal

View Answer
150) Which of the following part of a neuron is covered by fatty sheath ?

A)

axon

B)

cyton

C)

dendrite

D)

node of Ranvier

View Answer
151) Outgrowth developing along with hilum of the seed is :

A)

Plumule

B)

Radicle

C)

Strophiole

D)

Perisperm

View Answer
152) Removal of top fertile soil by wind or water is :

A)

Siltation

B)

Soil erosion

C)

Weathering of soil

D)

Leaching

View Answer
153) A fruit developed from a condensed inflorescence is :

A)

simple fruit

B)

aggregate fruit

C)

composite fruit

D)

etaerio

View Answer
154) Acid rain are produced by ;

A)

excess \[N{{O}_{3}}\]and \[S{{O}_{2}}\]from burning fossil fuels

B)

excess production of \[N{{H}_{3}}\]by industry and coal gas

C)

excess release of carbon monoxide by incomplete combustion

D)

excess formation of \[C{{O}_{2}}\]by combustion and animal respiration

View Answer
155) The principal cereal crop of India/Asia is :

A)

Sorghum

B)

barley

C)

wheat

D)

rice

View Answer
156) The stage of cell cycle when cell has undergone differentiation is:

A)

\[{{G}_{0}}\]

B)

\[{{G}_{1}}\]

C)

\[{{G}_{3}}\]

D)

\[{{G}_{4}}\]

View Answer
157) Principle protein of cillia and flagella is :

A)

globulin

B)

fibrin

C)

flagellin

D)

tubulin

View Answer
158) Photosynthetic bacteria have:

A)

pigment system I (only one pigment system)

B)

pigment system II

C)

both and

D)

some other type

View Answer
159) Major coffee producing state of India is :

A)

Tamil Nadu

B)

Kerala

C)

Kamataka

D)

Andhra Pradesh

View Answer
160) DNA chromosome replication takes place during:

A)

\[{{\text{G}}_{\text{1}}}\text{-}\]phase

B)

\[{{\text{G}}_{\text{2}}}\text{-}\]phase

C)

S-phase

D)

Prophase

View Answer
161) Active transport occurs:

A)

against concentration gradient and requires ATP

B)

against concentration gradient and does not require ATP

C)

along concentration gradient but require ATP

D)

along concentration gradient but does not require ATP

View Answer
162) Two or more species occupying same or overlapping areas are :

A)

sympatric

B)

sibling

C)

sub species

D)

allopatric

View Answer
163) Terminal cytochrome of respiratory chain which donates electrons to oxygen is :

A)

cytochrome b

B)

                cytochrome c

C)

cytochrome\[{{a}_{1}}\]

D)

cytochrome \[{{a}_{3}}\]

View Answer
164) Dendrochronology is the study of:

A)

height of a tree

B)

diameter of a tree

C)

age of the tree by counting the number of annual rings in the main stem

D)

none of the above

View Answer
165) A student wanrs to study metaphasic behavior of chromosomes in a living cell. The technique most suitable is:

A)

phase contrast microscope

B)

x-ray microscope

C)

cell fractionation

D)

scanning electron microscope

View Answer
166) Pratonema is found in the life cycle of:

A)

Spirogyra

B)

Rhizopus

C)

Escherichia

D)

Funaria

View Answer
167) Energy currency (reservoir) of the cells is:

A)

AMP

B)

ATP

C)

RNA

D)

DNA

View Answer
168) An open collateral bundle is one in which:

A)

xylem and phloem are seprated by cambium

B)

xylem and phloem lie side by side

C)

cambium occurs on the outside of bundle

D)

cambium does not occur in the bundle

View Answer
169) Agar-agar commonly used in bacterial cultures and medication is obtained from :

A)

Sargassum

B)

Gelidium

C)

Ulothrix

D)

Ulva

View Answer
170) Dikaryon formation is characteristic of:

A)

ascomycetes and basidiomycetes

B)

phycomycetes and basidiomycetes

C)

ascomycetes and phycomycetes

D)

phycomycetes and zygomycetes

View Answer
171) Most effective wavelength of light for photosynthesis is :

A)

green

B)

violet

C)

red

D)

yellow

View Answer
172) Divisions characteristic of korper-kappe theory are:

A)

anticlinal

B)

T-type

C)

periclinal

D)

irregular

View Answer
173) Prothallus of fern has :

A)

antheridia and archegonia on lower surface

B)

antheridia and archegonia on upper surface

C)

antheridia on upper surface and archegonia on lower

D)

antheridia on lower surface and archegonia on upper surface

View Answer
174) Male cone of Pmus possesses :

A)

mega sporophylls

B)

microsporophyus

C)

anthers

D)

ligules

View Answer
175) \[{{\text{C}}_{\text{4}}}\]plants, synthesis of sugars/final \[\text{C}{{\text{O}}_{\text{2}}}\]fixation occurs in :

A)

palisade cells

B)

spongy cells

C)

undifferentiated mesophyll cells

D)

bundle sheath cells

View Answer
176) Cook cambium and vascular cambium are :

A)

parts of secondary xylem and phloem

B)

parts of pericycle

C)

lateral meristems

D)

apical meristems

View Answer
177) First natural cytokinin was discovered by :

A)

Skoog and Miller

B)

Letham

C)

Benson and Calvin

D)

Thimann and Went

View Answer
178) Grassland with scattered trees is :

A)

savanna

B)

deciduous forest

C)

evergreen forest

D)

tropical rain forest

View Answer
179) Major role of minor elements inside living organisms is to act as :

A)

binder of cell structure

B)

constituent of hormone

C)

building blocks of important amino acids

D)

cofactor of enzymes

View Answer
180) epipetalous and syngenesious stamens occur in:

A)

Solanaceae

B)

Brassicaceae

C)

Fabaceae

D)

Asteraceae

View Answer

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