Solved papers for BHU PMT BHU PMT Solved Paper-2001

BHU PMT Solved Paper-2001 Total Questions - 200

1) A force \[\overset{\to }{\mathop{\text{F}}}\,=\left( 5\hat{i}+3\hat{j} \right)\,\,\text{N}\] is applied over a particle which displaces it from its original to the point\[\overset{\to }{\mathop{s}}\,=\left( 5\overset{\to }{\mathop{\text{i}}}\,+3\overset{\wedge }{\mathop{\text{j}}}\, \right)\,\,m\]. The work done on the particle is:

A)

\[+11\,\,j\]

B)

\[+7\,\,j\]

C)

\[+13\,\,j\]

D)

\[-7\,\,j\]

View Answer
2) The dimensional formula for Planck's constant and angular momentum is:

A)

\[\left[ M{{L}^{2}}{{T}^{-2}} \right]\,and\,\left[ ML{{T}^{-1}} \right]\]

B)

\[\left[ M{{L}^{2}}{{T}^{-1}} \right]\,and\,\left[ M{{L}^{2}}{{T}^{-1}} \right]\]

C)

\[\left[ M{{L}^{2}}{{T}^{1}} \right]\,and\,\left[ M{{L}^{2}}{{T}^{-2}} \right]\]

D)

\[\left[ ML{{T}^{-1}} \right]\,and\,\left[ ML{{T}^{-2}} \right]\]

View Answer
3) A elevator car whose floor to ceiling distance is 2.7 m starts ascending with a constant acceleration of \[1.2\,\,m/{{s}^{2}}\], 2 s after the start a bolt is begin to fall from the ceiling of the car. The free fall time of the bolt is \[\left( g=9.8\,\,m/{{s}^{2}} \right):\]

A)

\[\sqrt{\frac{2.7}{9.8}s}\]

B)

\[\sqrt{\frac{5.4}{9.8}s}\]

C)

\[\sqrt{\frac{5.4}{8.6}s}\]

D)

\[\sqrt{\frac{5.4}{11}s}\]

View Answer
4) Two items, each of 50 m length are moving parallel on parallel lines towards each other with speeds of\[10\,\,m/s\,\,and\,\,15\,\,m/{{s}^{2}}\]. The pass each other in.

A)

\[6\,\,s\]

B)

\[2\,\,s\]

C)

\[4\,\,s\]

D)

\[5\sqrt{\frac{2}{3}}\,\,s\]

View Answer
5) A body of mass m moving with velocity u collides with a stationary body of mass 2m. The speed of the system after collision, is:

A)

\[2u\]

B)

\[\frac{u}{3}\]

C)

\[2u\]

D)

\[\frac{u}{4}\]

View Answer
6) A wet open umbrella is held vertical and it whirled about the handle at a uniform rate of 21 revolutions in 44 s. If the rim of the umbrella is a circle of 1 m in diameter and the height of the rim above the flour is 4.9 m, the locus of the drop is a circle of radius:

A)

\[\sqrt{2.5}\,m\]

B)

\[1\,m\]

C)

\[3\,\,m\]

D)

\[1.5\,\,m\]

View Answer
7) The moment of inertia of a body about a given axis is\[1.2\,\,kg\,-{{m}^{2}}\]. To produce a rotational kinetic energy of \[1500\,\,J\] an angular acceleration of \[25\,\,rad/{{s}^{2}}\] must be applied for:

A)

\[8.5\,\,s\]

B)

\[5\,\,s\]

C)

\[2\,\,s\]

D)

\[1\,\,s\]

View Answer
8) A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by\[1\,\,m/s\], so as the have same kinetic energy as that of the boy. The original speed of the man is:

A)

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

B)

\[\sqrt{2}\,m/s\]

C)

\[\frac{1}{\sqrt{2}-1}\,m/s\]

D)

\[\frac{1}{\sqrt{2}}\,m/s\]

View Answer
9) An earth satellites \[S\] has an orbit radius which is 4 times that of communication satellite C. The period of revolution of \[S\]will be:

A)

\[32\,\,day\]

B)

\[18\,\,day\]

C)

\[8\,\,day\]

D)

\[9\,\,day\]

View Answer
10) \[n\] small balls, each of mass \[m\]impinge elastically each second on a surface with a velocity \[u\], then the force experienced by the surface in one second, will be:

A)

\[4\,\,mnu\]

B)

\[2\,\,mnu\]

C)

\[1.5\,\,mnu\]

D)

\[0.8\,\,mnu\]

View Answer
11) If the potential energy of a body on a planet is numerically \[U\] and the escape velocity for the same body be \[{{v}_{e}}\] for the same planet then \[U/{{v}_{e}}\] will be:

A)

\[\frac{U}{{{v}_{e}}}=m\sqrt{\frac{GM}{2R}}\]

B)

\[\frac{U}{{{v}_{e}}}=m\sqrt{\frac{GM}{2R}}\]

C)

\[\frac{U}{{{v}_{e}}}=m\sqrt{\frac{2GM}{R}}\]

D)

\[\frac{U}{{{v}_{e}}}=m\frac{GM}{R}\]

View Answer
12) A car of mass \[m\] moves in a horizontal circular path of radius \[r\] meter. At an instant its speed os \[v\,\,m/s\] and is increasing at a rate a \[m/{{s}^{2}}\], then the acceleration of the car is:

A)

\[\sqrt{a\left( \frac{{{v}^{2}}}{r} \right)}\]

B)

\[\sqrt{{{a}^{2}}+{{\left( \frac{{{v}^{2}}}{r} \right)}^{2}}}\]

C)

\[\frac{{{v}^{2}}}{r}\]

D)

\[a\]

View Answer
13) An object of mass 40 kg and having a velocity 4 m/s collides with another object \[\left( m=60\,kg \right)\] having velocity 2 m/s. The collision is perfectly inelastic. The loss in energy is:

A)

\[110\,\,J\]

B)

\[48\,\,J\]

C)

\[392\,\,J\]

D)

\[440\,\,J\]

View Answer
14) Dimensions of surface tension are:

A)

\[\left[ {{M}^{2}}{{L}^{2}}{{T}^{-2}} \right]\]

B)

\[\left[ {{M}^{2}}L{{T}^{-2}} \right]\]

C)

\[\left[ M{{T}^{-2}} \right]\]

D)

\[\left[ ML{{T}^{-2}} \right]\]

View Answer
15) An iron rod of length 2 m and area of cross-section \[50\,\,m{{m}^{2}}\] stretches by\[0.5\,\,mm\], when a mass of 250 kg is hung from its lower end. The Young?s of iron rod is:

A)

\[19.6\times {{10}^{20}}\,\,N/{{m}^{2}}\]

B)

\[19.6\times {{10}^{18}}\,\,N/{{m}^{2}}\]

C)

\[19.6\times {{10}^{15}}\,\,N/{{m}^{2}}\]

D)

\[19.6\times {{10}^{10}}\,\,N/{{m}^{2}}\]

View Answer
16) A car of mass m is moving on a rough road with momentum p. If the coefficient of friction between the tyres and road is u, then the stopping distance is :

A)

\[\frac{{{p}^{2}}}{2\mu {{m}^{2}}g}\]

B)

\[\frac{p}{2\mu {{m}^{2}}g}\]

C)

\[\frac{{{p}^{2}}}{2\mu mg}\]

D)

\[\frac{p}{2\mu mg}\]

View Answer
17) The time period of revolution of planet X around the sun is 8 times that of Y. The distance of X from the sun is how many times greater than that of the sun?

A)

\[5\frac{1}{2}times\]

B)

\[4\,\,times\]

C)

\[3\,\,times\]

D)

\[None\,\,of\,\,these\]

View Answer
18) \[16\,\,c{{m}^{3}}\]Water flows per second through a capillary tube of radius a cm and of length \[l\]and when connected a pressure head of \[H\]cm of water. If a tube of same length and radius \[a/2\] cm is connected to the same pressure head the quantity of water flowing through the tube per second is:

A)

\[18\,\,c{{m}^{3}}\]

B)

\[1\,\,c{{m}^{3}}\]

C)

\[16\,\,c{{m}^{3}}\]

D)

\[4\,\,c{{m}^{3}}\]

View Answer
19) Pressure inside two soap bubbles are 1.01 and 1.03 atm. Ratio between their volumes is :

A)

\[27:1\]

B)

\[3:1\]

C)

\[127:101\]

D)

none of these

View Answer
20) A man measures time period of a pendulum (T) in stationary lift. If the lift moves upward with p acceleration \[\frac{g}{4}\], then new time period will be :

A)

\[\sqrt{\frac{2}{5}T}\]

B)

\[\sqrt{\frac{5}{2}T}\]

C)

\[\frac{\sqrt{5}\,T}{2}\]

D)

\[\frac{2T}{\sqrt{5}}\]

View Answer
21) A stationary object at \[4{}^\circ C\]and weighing 3.5 kg falls from a height of 2000 m on a snow mountain at\[0{}^\circ \,C\]. If the temperature of the object just before hitting the snow is \[0{}^\circ \,C\] and the object comes to rest immediately \[\left( g=10\,\,m/{{s}^{2}}\,\,and\,\,latent\,\,heat\,\,of\,\,ice=3.5\times {{10}^{5}}\,J/s \right),\] then the object will melt:

A)

\[2\,\,kg\,\,of\,ice\]

B)

\[200\,\,g\,\,of\,ice\]

C)

\[20\,\,g\,\,\,ice\]

D)

\[2\,\,g\,\,\,ice\]

View Answer
22) A Carnot enging works between temperatures \[727{}^\circ C\] and \[27{}^\circ C\]. The efficiency of the engine is:

A)

\[70%\]

B)

\[30\,%\]

C)

\[0\,%\]

D)

\[10\,%\]

View Answer
23) A sphere at temperature 600 K is placed in Environment of temperature 200 K. Its cooling Rate is\[H\]. If the temperature is reduced to 400 K, then the cooling in same environment will be:

A)

\[\frac{H}{16}\]

B)

\[\left( \frac{9}{27} \right)H\]

C)

\[\left( \frac{16}{3} \right)H\]

D)

\[\left( \frac{3}{16} \right)H\]

View Answer
24) An ideal gas at \[27{}^\circ C\] is compressed Adiabatically to \[\frac{8}{27}\] of its original volume if \[\gamma =\frac{5}{3}\], Then rise in temperature is:

A)

\[405\,\,K\]

B)

\[225\,\,K\]

C)

\[375\,\,K\]

D)

\[450\,\,K\]

View Answer
25) The root mean square velocity of the molecules in a sample of helium\[\frac{5}{7}\] th that of the molecules in a Sample of hydrogen at\[{{0}^{\circ }}C\]. Then, the Temperature of helium sample is about:

A)

\[{{100}^{\circ }}C\]

B)

\[{{273}^{\circ }}C\]

C)

\[0\,K\]

D)

\[{{0}^{\circ }}C\]

View Answer
26) The displacement of the particle from its mean Position (in meter) varies with time (in second) According to the equation: \[y=0.2\,\,\sin \,\,\left( 10\pi t+1.5\pi \right)\cos \left( 10\pi t+1.5\pi \right)\]. The motion of the particle is:

A)

Along a circular path

B)

Simple harmonic motion with time period 0.1 s

C)

No simple harmonic motion

D)

Simple harmonic motion with time period 0.2 s

View Answer
27) Light of frequency \[8\times {{10}^{15}}\,\,Hz\] is incident on a substance of photoelectric work function\[6.125\,eV\]. The maximum kinetic energy of the emitted photoelectrons will be:

A)

\[39\,\,eV\]

B)

\[27\,\,eV\]

C)

\[54\,\,eV\]

D)

\[13.5\,\,eV\]

View Answer
28) A cylindrical tube, open at both ends has a fundamental frequency \[f\] in air. The tube dipped vertically in water, so that half of it is in water, the fundamental frequency of the air colon is now:

A)

\[2\,\,f\]

B)

\[f\]

C)

\[\frac{3f}{4}\]

D)

\[\frac{f}{2}\]

View Answer
29) The equation of plane wave is given by as: \[y=2\,\sin \,\pi \left( 200\,t\frac{x}{150} \right)\] When displacement \[y\] is given in cms and time \[t\] in second, then the velocity of the wave is:

A)

\[30000\,\,cm/s\]

B)

\[200\,\,cm/s\]

C)

\[150\,\,cm/s\]

D)

\[2\,\,cm/s\]

View Answer
30) The distance between two point?s difference in phase by \[{{60}^{\circ }}\] on a wave having a wave velocity \[360\,\,m\text{/}s\] and frequency \[500\,\,Hz\] is:

A)

0.36 m

B)

0.12 m

C)

0.18 m

D)

0.72 m

View Answer
31) The heat generated in a circuit is dependent upon the resistance, current and time for which the current is flown. If the error in measuring the above are\[1%,\,2%\] and\[1%\]respectively. The maximum error in measuring the heat is:

A)

\[8\,%\]

B)

\[6\,%\]

C)

\[18\,%\]

D)

\[12\,%\]

View Answer
32) Five resistors are connected as shown in the given figure. The effective resistance between \[A\] and \[B\]is:

A)

\[7\,\Omega \]

B)

\[\frac{54}{15}\Omega \]

C)

\[\frac{10}{3}\Omega \]

D)

\[17\,\Omega \]

View Answer
33) A particle having charge 100 times that of an electron is revolving in a circular path of radius 0.8 m with one rotation per second. The magnetic field produced at the center will be:

A)

\[{{10}^{-17}}\,\,{{\mu }_{0}}\]

B)

\[{{10}^{-11}}\,\,{{\mu }_{0}}\]

C)

\[{{10}^{-7}}\,\,{{\mu }_{0}}\]

D)

\[{{10}^{-3}}\,\,{{\mu }_{0}}\]

View Answer
34) The energy of an X-ray photon is 2 keV, then its Frequency will be:

A)

\[3.2\times {{10}^{-6}}\] Per sec

B)

\[5\times {{10}^{17}}\,Per\,\sec \]

C)

\[2\times {{10}^{17}}\,Per\,\sec \]

D)

\[2\times {{10}^{18}}\,Per\,\sec \]

View Answer
35) A refracting angle of a prism is A and the \[A\] Refractive index of the prism is cot\[\left( \frac{A}{2} \right)\]. Then, Angle of minimum deviation is:

A)

\[{{180}^{\circ }}-2A\]

B)

\[{{90}^{\circ }}-A\]

C)

\[{{180}^{\circ }}+2A\]

D)

\[{{180}^{\circ }}-3A\]

View Answer
36) If the critical angle for total internal reflection from medium to vacuum is 30°. The velocity in the medium will be:

A)

\[\sqrt{3}\times {{10}^{8}}\,\,m/s\]

B)

\[6\times {{10}^{8}}\,\,m/s\]

C)

\[1.5\times {{10}^{8}}\,\,m/s\]

D)

\[3\times {{10}^{8}}\,\,m/s\]

View Answer
37) Given, \[_{a}{{\mu }_{8}}=\frac{3}{2},{{\,}_{a}}{{\mu }_{w}}=\frac{4}{3}\], if a convex lens of Focal length 10 cm is placed in water, then it's Focal length in water is:

A)

Equal to 40 cm

B)

Equal to 20 cm

C)

Equal to 10 cm

D)

None of the above

View Answer
38) The length of an astronomical telescope adjusted for parallel light is 100 cm. If the magnification of the telescope is 19. The focal length of two lenses, i.e., objective and eye piece are:

A)

76 cm and 4 cm

B)

95 cm and 5 cm

C)

85 cm and 15 cm

D)

82 cm and 18 cm

View Answer
39) Doubly ionised helium atoms and hydrogen ions are accelerated from rest through the same potential drop. The ratio of the final velocities of helium and the hydrogen ions are:

A)

\[\frac{1}{2}\]

B)

\[\frac{1}{\sqrt{2}}\]

C)

\[\sqrt{2}\]

D)

\[2\]

View Answer
40) In a transformer, the number of turns of primary coil and secondary coil are 5 and 4 respectively. If 220 V is applied on the primary coil, then the ratio of primary current to the secondary current will be:

A)

\[9:5\]

B)

\[5:9\]

C)

\[5:4\]

D)

\[4:5\]

View Answer
41) If the distance between parallel plates of a Capacitor is halved and dielectric constant is Doubled then the capacitance will:

A)

remain the same

B)

increase 4 times

C)

increase 2 times

D)

decrease 2 times

View Answer
42) In a nuclear fission. 0-1% mass is converted into energy. The energy released by the fission of 1 kg mass will be:

A)

\[9\times {{10}^{19}}\,\,J\]

B)

\[9\times {{10}^{17}}\,\,J\]

C)

\[9\times {{10}^{16}}\,\,J\]

D)

\[9\times {{10}^{13}}\,\,J\]

View Answer
43) The energy of hydrogen atom in the nth orbit is\[{{E}_{n}},\]Then the energy in the nth orbit of single Ionized helium atom is:

A)

\[\frac{{{E}_{n}}}{2}\]

B)

\[2{{E}_{n}}\]

C)

\[4{{E}_{n}}\]

D)

\[\frac{{{E}_{n}}}{4}\]

View Answer
44) Suppose. 1 mg of radioactive substance is taken Initially. After 2 h, it is found that 0.25 mg of the Substance is left behind. The mean life of the Substance is:

A)

\[\frac{1}{0.693}h\]

B)

\[0.693\times 2h\]

C)

\[0.693\times \frac{1}{4}h\]

D)

\[0.693\times 8h\]

View Answer
45) Force between two identical bar magnets whose Centres \[r\]meter apart is 4.8 N when their axis are in the same line. If the separation is increased to 2r meter, the force between them is reduced to:

A)

0.3 N

B)

0.6 N

C)

2.4 N

D)

1.2 N

View Answer
46) An ideal transformer has a primary power input of 10 kW. The secondary current when the Transformer is on load is 25 A. If the primary Secondary turns ratio is 8 : 1, then the potential Difference applied in the primary coil will be:

A)

\[\frac{{{\left( 10 \right)}^{4}}}{25{{\left( 8 \right)}^{2}}}V\]

B)

\[\frac{{{10}^{4}}}{\left( 25 \right)\left( 8 \right)}V\]

C)

\[\frac{{{\left( 10 \right)}^{4}}\,8}{25}V\]

D)

\[\frac{{{\left( 10 \right)}^{4}}\,{{\left( 8 \right)}^{2}}}{25}V\]

View Answer
47) An air capacitor of capacity \[C=10\mu F\]is connected to a constant voltage battery of 12V. Now, the space between the plates is filled with a Liquid of dielectric constant 5. The additional Charge that flows now from battery to the Capacitor is:

A)

\[24\mu C\]

B)

\[480\,\mu C\]

C)

\[600\,\mu C\]

D)

\[120\,\mu C\]

View Answer
48) Pure silicon at 300 K has equal electrons\[{{n}_{e}}\], and Holes \[{{n}_{h}}\]concentration of\[1.5\times {{10}^{16}}/{{m}^{3}}\].Doping by Indium increases number of holes\[{{n}_{h}}\] to\[4.5\times {{10}^{22}}/{{m}^{3}}\,\,then\,\,{{n}_{h}}\]?doped in silicon will be:

A)

\[3.0\times {{10}^{-19}}/{{m}^{3}}\]

B)

\[5\times {{10}^{9}}/{{m}^{3}}\]

C)

\[4.5\times {{10}^{22}}/{{m}^{3}}\]

D)

\[1.5\times {{10}^{16}}/{{m}^{3}}\]

View Answer
49) In an atom bomb the reaction which occurs is:

A)

Thermo nuclear

B)

Uncontrolled fission

C)

Controlled fission

D)

Fusion

View Answer
50) If 1 g of hydrogen is converted into 0.993 g of Helium, in the thermo nuclear reaction, the Energy released in the reaction is:

A)

\[63\times {{10}^{20}}\,J\]

B)

\[63\times {{10}^{14}}\,J\]

C)

\[63\times {{10}^{10}}\,J\]

D)

\[63\times {{10}^{7}}\,J\]

View Answer
51) Nitration of benzene, produce nitrobenzene. During nitration the role of cone.\[HN{{O}_{3}}\]in nitrating mixture is as a:

A)

catalyst

B)

reducing agent

C)

acid

D)

base

View Answer
52) Steam distillation is used for the purification of:

A)

covalent compounds

B)

electrovalent compounds

C)

co-ordinate compounds

D)

volatile compounds

View Answer
53) The number of isomers shown by the compound with molecular formula\[{{C}_{7}}{{H}_{8}}O\]is:

A)

2

B)

3

C)

5

D)

7

View Answer
54) Chromium is represented by the electronic configuration:

A)

\[[Ne]3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }3{{d}^{1}}\text{ }4{{s}^{2}}\]

B)

\[[Ne]3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }3{{d}^{2}}\text{ }4{{s}^{1}}\]

C)

\[[Ne]3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }3{{d}^{5}}\,4{{s}^{1}}\]

D)

\[[Ne]3{{s}^{2}}\text{ }3{{p}^{6}}\text{ }4{{s}^{2}}\text{ }3{{d}^{4}}\]

View Answer
55) \[2HCl(g){{H}_{2}}(g)+C{{l}_{2}}(g)\] For the above reaction, the equilibrium constant is\[1.2\times {{10}^{-4}}M,\]. If the equilibrium concentration of\[{{H}_{2}}\]and\[C{{l}_{2}}\]is\[1.2\times {{10}^{-3}}M\]and \[1.2\times {{10}^{-4}}M\] respectively, then the concentration of\[HCl\]is:

A)

\[12\times {{10}^{-4}}M\]

B)

\[12\times {{10}^{-3}}M\]

C)

\[12\times {{10}^{-2}}M\]

D)

\[12\times {{10}^{-1}}M\]

View Answer
56) An asymmetric carbon atom is that in which :

A)

three similar and one dissimilar groups are attached

B)

two similar and two dissimilar groups are attached

C)

all the different groups are attached

D)

none of the above

View Answer
57) The optical inactivity due to internal compensation can be exhibited by:

A)

dextro-tartaric acid

B)

laevo-tartaric acid

C)

racemic-tartaric acid

D)

meso-tartaric acid

View Answer
58) The common donor atom in ligands:

A)

nitrogen

B)

oxygen

C)

arsenic

D)

both and

View Answer
59) Isotopes are the elements having same:

A)

mass number

B)

atomic number

C)

number of atoms

D)

number of neutrons

View Answer
60) By passing 0.50 A current to an aqueous solution half gram of an element is liberated. The time of passing the current in seconds is: (eq. wt. = 96.5)

A)

100s

B)

500s

C)

1000s

D)

2000s

View Answer
61) The values of\[\Delta H\]for the combustion of ethane and acetylene are\[-341.1\]and\[-310.0\] kcal, respectively. The better fuel is:

A)

ethane

B)

acetylene

C)

both

D)

none of these

View Answer
62) Bauxite is an oxide mineral of:

A)

Al

B)

B

C)

Ba

D)

Bi

View Answer
63) Marsh gas is:

A)

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

B)

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

C)

\[C{{H}_{4}}\]

D)

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

View Answer
64) Red lead is:

A)

\[PbO\]

B)

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

C)

\[P{{b}_{3}}{{O}_{4}}\]

D)

\[P{{b}_{4}}{{O}_{3}}\]

View Answer
65) Dipole moment is shown by:

A)

2-methyl propane

B)

trans-butene-2

C)

cis-butene-2

D)

carbon tetrachloride

View Answer
66) Concentrated hydrochloric acid contains 37% \[HCl\](by mass). The density of this solution is 1.18 g/mL. The molarity of the solution is:

A)

10 M

B)

12 M

C)

13 M

D)

14 M

View Answer
67) The osmotic pressure at\[{{17}^{o}}C\]of an aqueous solution containing 1.75g of sucrose per 150 mL solution is:

A)

0.08 atm

B)

8.1 atm

C)

0.8 atm

D)

9.1 aim

View Answer
68) Phenol reacts with excess of bromine water to produce:

A)

o-bromophenol

B)

p-bromophenol

C)

2, 4, 6-tribromophenol

D)

mixture of o-and p-bromophenol

View Answer
69) The IUPAC name of \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,==C{{H}_{2}}C{{H}_{2}}OH\]is:

A)

2-methyl-3-butenol

B)

3-methyl-2-butenol

C)

3-methyl-3-butenol

D)

2-methyl-2-butenol

View Answer
70) Natural rubber is a polymer of:

A)

styrene

B)

isoprene

C)

butadiene

D)

ethylene

View Answer
71) In Friedel-Craft's reaction, anhydride. \[AlC{{l}_{3}}\] acts to:

A)

produce electrophile

B)

produce nucleophile

C)

absorb water

D)

absorb\[HCl\]

View Answer
72) Mullikan's oil drop method is used to determine:

A)

velocity of electron

B)

mass of electron

C)

charge of electron

D)

e/m ratio of electron

View Answer
73) Wavelength of spectral line emitted is inversely proportional to:

A)

energy

B)

velocity

C)

radius

D)

quantum number

View Answer
74) To explain the structure of atom, the first use of quantum theory was made by:

A)

Heisenberg

B)

Bohr

C)

Planck

D)

Einstein

View Answer
75) If 0.44 g of substance dissolved in 22.2 g of benzene lowers the freezing point of benzene by\[0.567{}^\circ C,\]then the molecular mass of substance is : (the molal depression constant\[={{5.12}^{o}}C\,mo{{l}^{-1}}\])

A)

128.4

B)

156.6

C)

178.9

D)

232.4

View Answer
76) In 1,2-butadiene, all the carbon are hybridized as:

A)

\[sp\]

B)

\[s{{p}^{2}}\]

C)

\[s{{p}^{3}}\]

D)

\[s{{p}^{2}}\]and\[s{{p}^{3}}\]

View Answer
77) Distribution law cannot be applicable for a system in which\[{{I}_{2}}\]is distributed in between:

A)

water and alcohol

B)

water and benzene

C)

water and chloroform

D)

water and acetone

View Answer
78) \[N{{H}_{3}}\]can be dried by:

A)

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

B)

anhyd.\[CaC{{l}_{2}}\]

C)

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

D)

\[CaO\]

View Answer
79) \[AlC{{l}_{3}}\]acts as a strong Lewis acid because \[AlC{{l}_{3}}\]is:

A)

easily hydrolysed

B)

a covalent compound

C)

an ionic compound

D)

an electron deficient compound

View Answer
80) \[O_{2}^{2+}\]has a bond order of:

A)

1

B)

2

C)

3

D)

4

View Answer
81) The main structure feature of proteins is:

A)

glycoside linkage

B)

ester linkage

C)

ether linkage

D)

peptide linkage

View Answer
82) According to Raoult's law, relative lowering of vapour pressure for a solution is equal to:

A)

mole fraction of a solute

B)

mole fraction of a solvent

C)

moles of a solute

D)

moles of a solvent

View Answer
83) Which of the following react with\[KMn{{O}_{4}}\]to produce pyruvic acid?

A)

Butyne

B)

Propyne

C)

2-pentyne

D)

Ethyne

View Answer
84) 1,3-butadiene and ethylene reacts to produce:

A)

cyclohexane

B)

cyclohexmonoene

C)

cyclohexdiene

D)

cyclohextriene

View Answer
85) Lithopone is a mixture of:

A)

\[ZnC{{O}_{3}},BaC{{O}_{3}}\]

B)

\[ZnS,N{{a}_{2}}S{{O}_{4}}\]

C)

\[ZnS{{O}_{4}},BaS{{O}_{4}}\]

D)

\[ZnS,BaS{{O}_{4}}\]

View Answer
86) Glucose comes under the class:

A)

ketohexose

B)

aldohexose

C)

disaccharide

D)

polysaccharide

View Answer
87) Penicillin is an:

A)

antibiotic

B)

anesthetic

C)

antiseptic

D)

antipyretic

View Answer
88) The compound used as antiknock in petrol fuel is:

A)

basic lead sulphate

B)

tetraethyl lead

C)

lead tetraacetate

D)

lead carbonate

View Answer
89) The test used for the distinction of\[HCOOH\]and\[C{{H}_{3}}COOH\]is treatment with:

A)

sodium

B)

sodium hydroxide

C)

Tollen's reagent

D)

alcohol

View Answer
90) Which one of the following is a metalloid?

A)

Phosphorus

B)

Antimony

C)

Nitrogen

D)

Bismuth

View Answer
91) Chloroform, on exposing to air and sunlight produce:

A)

chloropicrin

B)

phosgene

C)

carbon tetrachloride

D)

benzene

View Answer
92) The vapour density of a gas A is four times than B. If molecular mass of B is 1, then molecular mass of A is:

A)

1

B)

2

C)

1/4

D)

4

View Answer
93) When a gas is allowed to expand from a region of high pressure to a region of low pressure, there occurs a change in temperature. This phenomenon is:

A)

Joule-Thomson effect

B)

First law of thermodynamics

C)

Gibbs-Helmholtz equation

D)

Second law of thermodynamics

View Answer
94) The amphoteric oxide is:

A)

\[T{{i}_{2}}{{O}_{2}}\]

B)

\[MgO\]

C)

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

D)

\[A{{l}_{2}}{{O}_{3}}\]

View Answer
95) Which one of the following is independent of temperature?

A)

Molarity

B)

Molality

C)

Normality

D)

Formality

View Answer
96) Grignard reagent reacts with formaldehyde to produce:

A)

an acid

B)

primary alcohol

C)

an anhydride

D)

secondary alcohol

View Answer
97) The percentage of carbon atom in acetic acid is:

A)

15%

B)

20%

C)

40%

D)

45%

View Answer
98) The acid which cannot be kept in glass bottles is:

A)

\[HCl\]

B)

\[HBr\]

C)

\[HF\]

D)

\[HI\]

View Answer
99) \[C{{H}_{3}}COOH\xrightarrow[Heat]{N{{H}_{3}}}A\xrightarrow[(-{{H}_{2}}O)]{{{P}_{2}}{{O}_{5}}}B\xrightarrow[(-{{H}_{2}}O)]{{{P}_{2}}{{O}_{5}}}C\] The compound 'C? is:

A)

acetamide

B)

ammonium acetate

C)

methyl cyanide

D)

aniline

View Answer
100) Thermite is a mixture of iron oxide and:

A)

Al-powder

B)

Zn-powder

C)

Mg-powder

D)

Cu-powder

View Answer
101) Maltose, lactose and sucrose are:

A)

disaccharides

B)

trisaccharides

C)

polysaccharides

D)

monosaccharides

View Answer
102) Select the specific pairs of DNA:

A)

adenine and cytosine

B)

adenine and thymine

C)

guanine and adenine

D)

guanine and uracil

View Answer
103) Ribosomes were discovered by :

A)

Palade

B)

Porter

C)

Brown

D)

Watson

View Answer
104) Which of the following does not possess contractile vacuole ?

A)

Euglena

B)

Paramecium

C)

Amoeba

D)

Plasmodium

View Answer
105) ?Venus flower basket? is the name of dried skeleton of:

A)

Euspongia

B)

Spongilla

C)

Euplectella

D)

Leucosolema

View Answer
106) AIDS was first noticed in :

A)

Russia

B)

USA

C)

France

D)

Germany

View Answer
107) Polio is caused by :

A)

bacteriophage

B)

bacteria

C)

virus with single stranded DNA

D)

virus with single stranded RNA

View Answer
108) Transduction in bacteria is mediated by

A)

plasmid

B)

phage vector

C)

F-factor

D)

pili

View Answer
109) Parthenogenesis is common in :

A)

house fly

B)

honey bee

C)

Drosophila

D)

none of these

View Answer
110) The common method of DNA replication is :

A)

disruptive

B)

semiconservative

C)

conservative

D)

random

View Answer
111) Lower jaw of mammal is made up of:

A)

maxilla

B)

dentary

C)

squamosal

D)

collumella

View Answer
112) Which of the following organ remain unchanged during metamorphosis of frog?s tadpole ?

A)

Heart

B)

Lung

C)

Nervous system

D)

Intestine

View Answer
113) Which of the following hormone is related with iodine ?

A)

Oxytocin

B)

Thyroxin

C)

Pituterin

D)

Secretin

View Answer
114) Germplasm theory was proposed by :

A)

Darwin

B)

Lamarck

C)

Weismann

D)

de Vries

View Answer
115) The Ornithine cycle removes two waste products from blood in liver. These are :

A)

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

B)

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

C)

ammonia and urea

D)

ammonia and uric acid

View Answer
116) The main function of centromere is :

A)

formation of RNA

B)

movement of chromosomes

C)

formation of DNA

D)

duplication of DNA

View Answer
117) Anabolism is :

A)

exergonic process

B)

destructive process

C)

endergonic process

D)

bidirectional process

View Answer
118) Abiogenesis means :

A)

spontaneous generation

B)

origin of life from living organisms

C)

origin of life from living organisms

D)

origin of life from microbes

View Answer
119) Bone marrow is absent in bones of :

A)

fish

B)

birds

C)

reptiles

D)

frog

View Answer
120) Secretions of ductless glands is called :

A)

pheromone

B)

enzymes

C)

mucous

D)

hormone

View Answer
121) In earthworm arrangement of vessels is :

A)

different in last 15 segments

B)

different in 1st 13 segments

C)

same throughout body

D)

different in 1st 10 and last 10 segments

View Answer
122) Which of the following phylum belongs to Deuterostomia ?

A)

Annelida

B)

Parazoa

C)

Mollusca

D)

Echinodermata

View Answer
123) Cytochromes are present in :

A)

outer membrane of mitochondria

B)

matrix of mitochondria

C)

matrix of mitochondria

D)

cytoplasm of cell

View Answer
124) A coral island with a central shallow lake is called as :

A)

atoll

B)

corallite

C)

diatom land

D)

coral feed

View Answer
125) Protein synthesis takes place in :

A)

chloroplast

B)

mitochondria

C)

cytoplasm

D)

ribosomes

View Answer
126) Which of the following nerve of human being is both sensory and motor?

A)

Optic

B)

Abducens

C)

Trigeminal

D)

Olfactory

View Answer
127) Lymph vessles are united to form :

A)

lymph heart

B)

lymph junctive

C)

cisterna chyle

D)

lymph jugular veins

View Answer
128) Ascorbic acid is also called as :

A)

thiamine

B)

vitamin-C

C)

pyridoxine

D)

vitamin-\[{{\text{B}}_{\text{12}}}\]

View Answer
129) Hamburger's phenomenon is also called as :

A)

sodium shift

B)

hydrogen shift

C)

chloride shift

D)

bicarbonate shift

View Answer
130) In mammals digestion of starch starts from :

A)

mouth

B)

stomach

C)

oesophagus

D)

duodenum

View Answer
131) Which of the following carries blood rich in food materials from intestine to liver ?

A)

Dorsal aorta

B)

Renal portal vein

C)

Hepatic portal vein

D)

Thoracic artery

View Answer
132) What is common among amylase, renin and trypsin ?

A)

All are proteins

B)

All act at less than 7 pH

C)

All are produced in stomach

D)

All are hormones

View Answer
133) Typhlop is a :

A)

grass snake

B)

sea snake

C)

blind snake

D)

tree snake

View Answer
134) Limbless amphibians belong to order :

A)

Anura

B)

Urodela

C)

Gymnophiana

D)

Squamata

View Answer
135) Typhlosole in earthworm starts from segment number:

A)

7

B)

14

C)

47

D)

27

View Answer
136) Chemoreceptor in Pila is :

A)

radula

B)

osphradium

C)

canula

D)

spiracle

View Answer
137) Leydig cells secrete :

A)

testosterone

B)

oestrogen

C)

corticosterone

D)

progesterone

View Answer
138) Who coined the term Ecology ?

A)

Darwin

B)

Linnaeus

C)

Odum

D)

Haeckel

View Answer
139) Trophic levels are linked to form :

A)

food web

B)

food chain

C)

autotrops

D)

carnivores

View Answer
140) Adjacent epithelial cells are held together by :

A)

liposomes

B)

lysosomes

C)

microsome

D)

desmosomes

View Answer
141) Heat-islands are produced due to :

A)

air pollution

B)

water pollution

C)

land pollution

D)

  noise pollution

View Answer
142) Colchicine is used for :

A)

polyploidy

B)

aneuploidy

C)

monosomy

D)

trisomy

View Answer
143) Sting apparatus of honey bee is a modified form of:

A)

ovipositor

B)

sex spine

C)

podical gland

D)

wax gland

View Answer
144) Blood clotting is prevented by :

A)

vitamin-K

B)

calcium ions

C)

potassium ions

D)

heparin

View Answer
145) Phallic organs in cockroach are related to :

A)

male reproductive system

B)

male excretory system

C)

male digestive system

D)

male circulatory system

View Answer
146) Haemocyanin is present in :

A)

Chordates

B)

Annelida

C)

Mollusca

D)

Porifera

View Answer
147) Who coined the term biocoenosis ?

A)

Karl Mobius

B)

Haeckel

C)

Ambust

D)

Lindmann

View Answer
148) True nucleus is absent in :

A)

man

B)

rabbit

C)

camel

D)

E. coli

View Answer
149) Coelome is found between :

A)

ectoderm and endoderm

B)

                mesoderm and ectoderm

C)

                body wall and ectoderm

D)

                mesoderm and endoderm

View Answer
150) DNA of bacteria is :

A)

with histones

B)

without histones

C)

with sugar base

D)

without sugar base

View Answer
151) Anemophilous flowers have :

A)

scented, large, showy flowers

B)

large feathery stigma

C)

stickey pollen grains

D)

sessile stigma

View Answer
152) A stress hormone is:

A)

IAA

B)

NAA

C)

ABA

D)

IBA

View Answer
153) When water enters in roots due to diffusion, it is termed as :

A)

osmosis

B)

passive absorption

C)

  active absorption

D)

imbibition

View Answer
154) Social foresting species with multiple utility is :

A)

Rosa indica

B)

Mangiferaindica

C)

Acacia nelotica

D)

Leucaenaleucocephala

View Answer
155) Vascular cambium of the root is an example of:

A)

primary meristem

B)

secondary meristem

C)

apical meristem

D)

lateral meristem

View Answer
156) Photosystem-II works in :

A)

grana of chloroplast

B)

stroma of chloroplast

C)

periplastidial space

D)

cytoplasm

View Answer
157) Tapetum is :

A)

protective

B)

reproductive

C)

nutritive

D)

respiratory

View Answer
158) Indirect transfer of genetic material from one bacterium to another through a bacteriophage is called :

A)

transformation

B)

conjugation

C)

translation

D)

transduction

View Answer
159) The latest explanation for closure of stomata comes from :

A)

Munch theory

B)

starch glucose theory

C)

Steward?s theory

D)

active K+ transport theory

View Answer
160) Aggregate fruit is found in :

A)

Custard apple

B)

Narvelia

C)

Rubus

D)

All of these

View Answer
161) Sugarcane is propagated vegetatively because :

A)

it does not produce seeds

B)

the seeds are not viable

C)

it helps in maintaining genetic purity

D)

it becomes more juicy

View Answer
162) Agriculture was originated in mesolithic age about:

A)

1000-5000 years ago

B)

5000-10000 years ago

C)

7000-15000 years ago

D)

15000-20000 years ago

View Answer
163) Fertilizers providing N, P, K all essential elements to plants are called :

A)

complete fertilizers

B)

incomplete fertilizers

C)

manure

D)

compost

View Answer
164) Crescograph was invented by :

A)

F.W. Went

B)

C.V. Raman

C)

J.C. Bose

D)

Charles Darwin

View Answer
165) Guttation is direct evidence for the presence of:

A)

transpiration

B)

absorption

C)

root pressure

D)

ascent of sap

View Answer
166) Mycorrhiza is useful association because :

A)

it fixes atmospheric nitrogen

B)

it enhances absorption of nutrients from soil

C)

it kills pathogens

D)

it provides resistance against drought

View Answer
167) Spores can be liberated from sporophyte only after the decay of gametophyte in :

A)

Riccia

B)

Funaria

C)

Marchantia

D)

Anthoceros

View Answer
168) In Cyeas male gametes are produced in the pollen tube by division of :

A)

body cell

B)

stalk cell

C)

prothallial cell

D)

tube cell

View Answer
169) Asteraceae is the new name given to family :

A)

Cruciferae

B)

Gramineae

C)

Umbelliferae

D)

Compositae

View Answer
170) Causal organism of black rust of wheat is :

A)

Phytophthora

B)

Ustilago

C)

Puccinia

D)

Synchytrium

View Answer
171) Decomposers are :

A)

autotroph

B)

saprotroph

C)

heterotroph

D)

autoheterotroph

View Answer
172) In a food chain, lion is a :

A)

producer

B)

primary consumer

C)

secondary consumer

D)

tertiary consumer

View Answer
173) A 13 celled male gametophyte in Selaginella is :

A)

12 cells of antheridium +1 prothallial cell

B)

9 cells of antheridium +4 prothallial cell

C)

6 cells of antheridium +7 prothallial cell

D)

10 cells of antheridium +3 prothallial cell

View Answer
174) Wheat grain is a :

A)

fruit

B)

seed

C)

inflorescence

D)

bulbil

View Answer
175) The carrying capacity of a population is determined by its :

A)

death rate

B)

limiting resources

C)

reproductive status

D)

birth rate

View Answer
176) ?Club fungi? is included in :

A)

Phycomycetes

B)

Ascomycetes

C)

Basidiomycetes

D)

Deuteromycetes

View Answer
177) Biotic factors of a food chain include :

A)

producer

B)

consumers

C)

decomposers

D)

all of these

View Answer
178) Heterothallism is common in :

A)

Mucor

B)

Yeast

C)

Spirogyra

D)

Ulothrix

View Answer
179) Organisms changed earth?s surface from reducing to oxidizing status are :

A)

autotrophs

B)

heterotrophs

C)

chemotrophs

D)

heteroautotrophs

View Answer
180) Nucleoli are rich in :

A)

RNA

B)

DNA

C)

protein and RNA

D)

protein and DNA

View Answer
181) Dictyosomes are also known as :

A)

ribosomes

B)

Golgi bodies

C)

lysosomes

D)

mesosomes

View Answer
182) The basic unit of classification of plants and animals is :

A)

genus

B)

species

C)

order

D)

family

View Answer
183) Diatomaceous earth is formed due to remains of diatoms :

A)

protoplasm

B)

cell wall

C)

cell membrane

D)

skeleton

View Answer
184) The point at which crossing over occurs is called as :

A)

chiasmata

B)

centromere

C)

chromosome

D)

gene loci

View Answer
185) In the process of respiration, the potential energy stored in organic compounds is released in the form of :

A)

kinetic energy

B)

chemical energy

C)

radiant energy

D)

light energy

View Answer
186) Pili in bacteria represent:

A)

flagella

B)

cilia

C)

extrachromosomal genetic element

D)

outgrowth of cell membrane of donor cell

View Answer
187) Parasitic alga is :

A)

Ulothrix

B)

Gelidium

C)

Oscillatoria

D)

Cephaleuros

View Answer
188) The organelle concerned with photorespiration is

A)

ribosome

B)

peroxisome

C)

glyoxysome

D)

lysosome

View Answer
189) Increase in the concentration of pollutants in higher trophic level is called :

A)

biodegradation

B)

biomagnification

C)

biodiversity

D)

biotism

View Answer
190) When a tall and red flowered individual is crossed with a dwarf and white flowered individual, phenotype of the progeny will be :

A)

homozygous tall and red

B)

heterozygous tall and red

C)

homozygous tall and white

D)

homozygous dwarf and white

View Answer
191) If the chromosome number of leaf cell is 42 the chromosome number of root cell, microspore mother cell           and embryo respectively will be :

A)

42, 42, 42

B)

42, 21, 21

C)

  21, 21, 21

D)

21, 21, 42

View Answer
192) Saffron from Crocus is obtained from its :

A)

flowers

B)

style and stigma

C)

stamens

D)

petals

View Answer
193) Growth of lateral bud is promoted by :

A)

auxin

B)

cytokinin

C)

gibberellin

D)

abscisic acid

View Answer
194) Pigment associated with photomorphogenesisis :

A)

chlorophyll

B)

anthocyanin

C)

phytochrome

D)

carotenoid

View Answer
195) represent, family:

A)

Malvaceae

B)

Brassicaceae

C)

Cucurbitaceae

D)

Solanaceae

View Answer
196) Flowering in short day plants is indicated by :

A)

short night

B)

short day and uninterrupted long night

C)

long days and interrupted night

D)

long night

View Answer
197) Edible part of coconut is :

A)

seed

B)

endosperm

C)

mesocarp

D)

whole

View Answer
198) Fibrous root system is better adopted than tap root system for:

A)

transport of organic matter

B)

absorption of water and minerals

C)

storage of food

D)

anchorage of plant to soil

View Answer
199) Uniform erosion caused by running water is called

A)

gully erosion

B)

sheet erosion

C)

rillerosinon

D)

wind erosion

View Answer
200) Which of the following control flowering in long day plants and sex expression in certain species?

A)

Auxin

B)

Cytokinin

C)

Gibberellin

D)

Ethylene

View Answer

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BHU PMT Solved Paper-2001 Total Questions - 200