Solved papers for RAJASTHAN PMT Rajasthan - PMT Solved Paper-2011

Rajasthan - PMT Solved Paper-2011 Total Questions - 200

1) Block A of mass 4 kg and block B of mass 6 kg are resting on a horizontal surface as shown in the figure. There is no friction between the block B and the horizontal surface. The coefficient of friction between the blocks is 0.2. If the value of \[g=10\,m/{{s}^{2}},\] the maximum horizontal force F that can be applied on block B without any relative motion between A and B is

A)

20 N

B)

40 N

C)

60 N

D)

       100 N

View Answer
2) A body is rotating with angular momentum L. If \[I\]is its moment of inertia about the axis of rotation, its kinetic energy of rotation is

A)

\[\frac{1}{2}I{{L}^{2}}\]

B)

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

C)

       \[\frac{1}{2}{{I}^{2}}L\]

D)

       \[\frac{1}{2}\frac{{{L}^{2}}}{I}\]

View Answer
3) The unit of surface tension is

A)

N-m

B)

N/m

C)

\[N-{{m}^{2}}\]

D)

       N

View Answer
4) The velocity of water flowing in a non-uniform tube is 20 cm/s at a point where the tube radius is 0.2 cm. The velocity at another point, where the radius is 0.1 cm, is

A)

80 cm/s

B)

40 cm/s

C)

20 cm/s

D)

       5 cm/s

View Answer
5) The excess pressure inside a soap bubble A is twice that in another soap bubble B. The ratio of volumes of A and B is

A)

1 : 2

B)

1 : 4

C)

1 : 8

D)

       1 : 16

View Answer
6) A body at rest splits into three parts of mass m, m and 4m respectively. The two equal masses fly off perpendicular to each other and each with speed of v. The speed of 4m will be

A)

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

B)

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

C)

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

D)

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

View Answer
7) 300 cal of heat is supplied to raise the temperature of 50 g of air from \[20{}^\circ C\] to \[30{}^\circ C\] without any change in its volume. Change in internal energy per gram of air is

A)

zero

B)

0.6 cal

C)

1.2 cal

D)

       6.0 cal

View Answer
8) The thermal capacity of any body is

A)

a measure of its capacity to absorb heat

B)

a measure of its capacity to provide heat

C)

the quantity of heat required to raise its temperature by a unit degree

D)

the quantity of heat required to raise the temperature of a unit mass of the body by a unit degree

View Answer
9) The absorptive power of a perfectly black body is

A)

zero

B)

infinite

C)

0.5

D)

       1.0

View Answer
10) A diatomic molecule has

A)

1 degree of freedom

B)

3 degrees of freedom

C)

5 degrees of freedom

D)

6 degrees of freedom

View Answer
11) The work done by a gas taken through the closed process ABCA (see figure) is

A)

\[6{{P}_{0}}{{V}_{0}}\]

B)

\[4{{P}_{0}}{{V}_{0}}\]

C)

\[{{P}_{0}}{{V}_{0}}\]

D)

       zero

View Answer
12) The displacement x as a function of time t of a simple harmonic motion is represented by

A)

\[\frac{{{d}^{2}}x}{d{{t}^{2}}}-{{A}^{2}}x=0\]

B)

\[\frac{dx}{dt}+{{A}^{2}}x=0\]

C)

\[\frac{{{d}^{2}}x}{dt}+{{A}^{2}}{{x}^{2}}=0\]

D)

\[\frac{{{d}^{2}}x}{d{{t}^{2}}}+{{A}^{2}}x=0\]

View Answer
13) The potential energy of spring when stretched by a distance x is E. The energy of the spring when stretched by x/2 is

A)

E

B)

E/2

C)

E/4

D)

       E/6

View Answer
14) The air column in a pipe with both ends open vibrates with a fundamental frequency \[f.\] If one of the ends of the pipe is closed, the fundamental frequency will be

A)

\[f\]

B)

\[2f\]

C)

(0) \[\frac{3}{2}f\]

D)

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

View Answer
15) The displacement \[y\] of a particle varies with time t, in second, as \[y=2\,\cos (\pi t+\pi /6)\]. The time period of the oscillations is

A)

2s

B)

4s

C)

1s

D)

       0.5s

View Answer
16) The number of beats per second resulting from the vibration\[{{x}_{1}}=a\,\cos \,500\,\pi t\] and\[{{x}_{2}}=a\,\cos \,508\,\pi t\] is

A)

zero

B)

2

C)

4

D)

       8

View Answer
17) A point object is placed at the focus of a double concave lens. The image is formed

A)

at infinity

B)

between the focus and the lens

C)

at focus

D)

between the focus and infinity

View Answer
18) A ray of light travelling in air is incident on a medium of refractive index\[\mu .\] If the angle of refraction is twice the incident angle, the incident angle is

A)

\[\sin {{\,}^{-1}}\left( \frac{1}{2\mu } \right)\]

B)

\[\sin {{\,}^{-1}}(2\mu )\]

C)

\[\cos {{\,}^{-1}}(2\mu )\]

D)

       \[\cos {{\,}^{-1}}\left( \frac{1}{2\mu } \right)\]

View Answer
19) Two coherent light sources emit light of the

A)

same intensity

B)

same pitch

C)

constant but different wavelengths

D)

same frequency having constant phase difference

View Answer
20) If in Fraunhofer diffraction due to a single slit, the slit width is increased, then the width .of the central maximum will

A)

increase

B)

decrease

C)

not change

D)

change depending upon the wavelength of light used

View Answer
21) The ratio of the coulomb to the gravitational force between two electrons is of the order of

A)

\[{{10}^{55}}\]

B)

\[{{10}^{42}}\]

C)

\[{{10}^{28}}\]

D)

       \[{{10}^{12}}\]

View Answer
22) Work done in moving a charge Q from the point   B(x = a, y = 0)   to   the   point A(x = 0, y = a) in the field of charge +q at origin is

A)

zero

B)

\[\frac{qQ}{4\pi {{\varepsilon }_{0}}(\sqrt{2}a)}\]

C)

\[\frac{qQ}{4\pi {{\varepsilon }_{0}}(2a)}\]

D)

       \[\frac{qQ\sqrt{2}a}{4\pi {{\varepsilon }_{0}}}\]

View Answer
23) A charge +Q is placed at the centre of a spherical surface of radius R. Another charge -Q/2 is placed at a distance of R/2 from the centre of the surface. A third charge -Q/2 is at a distance 3R/2 from the centre. The electrostatic flux linked with the surface is

A)

zero

B)

\[\frac{Q}{2{{\varepsilon }_{0}}}\]

C)

\[\frac{3Q}{2{{\varepsilon }_{0}}}\]

D)

       \[\frac{2Q}{{{\varepsilon }_{0}}}\]

View Answer
24)                   The uniform electric field in the space between the plates of a parallel plate capacitor of plate separation d and plate areas A is E. The energy of this charged capacitor is

A)

\[\frac{1}{2}\frac{{{\varepsilon }_{0}}{{E}^{2}}}{Ad}\]

B)

\[{{\varepsilon }_{0}}{{E}^{2}}Ad\]

C)

\[\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}Ad\]

D)

       \[\frac{1}{2}\frac{{{\varepsilon }_{0}}{{E}^{2}}}{Ad}\]

View Answer
25)   The capacity of a parallel plate capacitor without any dielectric is C. If the distance between the plates is doubled and the space between the plates is filled with a substance of dielectric constant 3, the capacity of the capacitor becomes

A)

\[\frac{1}{4}C\]

B)

\[\frac{9}{2}C\]

C)

\[\frac{2}{3}C\]

D)

       \[\frac{3}{2}C\]

View Answer
26) The\[SI\]unit of electrostatic flux is

A)

\[V/{{m}^{2}}\]

B)

V-m

C)

V/m

D)

       \[V-{{m}^{2}}\]

View Answer
27) A wire of length 1 m and cross-sectional area \[4\times {{10}^{-9}}{{m}^{2}}\] is made of a metal of resistivity \[6\times {{10}^{-8}}\Omega -m.\]The potential difference needed to pass a current of 2 A in the wire is

A)

75 V

B)

50 V

C)

30 V

D)

       10 V

View Answer
28) In the circuit shown, the resistance of the ammeter A and the battery are zero. Ammeter reads 0.2 A when the switch S is opened. When the switch S is closed, the ammeter will read

A)

0.1 A

B)

0.2 A

C)

0.3 A

D)

       0.6 A

View Answer
29) The cold junction of a thermocouple is at \[0{}^\circ C\]. The thermo-emf \[\varepsilon ,\] in volt, generated in this thermocouple varies with temperature \[t\,\,{}^\circ C\] of the hot junction as \[\varepsilon =6+4t-\frac{{{t}^{2}}}{32}\] The neutral temperature of the thermocouple is

A)

\[100{}^\circ C\]

B)

\[76{}^\circ C\]

C)

\[64{}^\circ C\]

D)

       \[50{}^\circ C\]

View Answer
30) A bar magnet is placed in a non-uniform magnetic field. The bar magnet, in general, will experience

A)

a linear force and no torque

B)

a torque and no linear force

C)

both a torque and a linear force

D)

neither a torque nor a linear force

View Answer
31) Curie temperature is the temperature above which

A)

paramagnetic material becomes diamagnetic

B)

paramagnetic material becomes ferromagnetic

C)

diamagnetic material becomes paramagnetic

D)

ferromagnetic material becomes paramagnetic

View Answer
32) A circular coil PQRSP is placed in a uniform magnetic field. When a current flows through the coil, the force on the segment PQ is F. The force on the remaining segment QRSP is

A)

3F

B)

-3F

C)

F

D)

       -F

View Answer
33) A charged particle moves in a circle of radius R under the influence of a constant transverse magnetic field. The time period of revolution is

A)

independent of R

B)

proportional to R

C)

proportional to\[\frac{1}{R}\]

D)

proportional to \[\frac{1}{{{R}^{2}}}\]

View Answer
34) The eddy current loss in a transformer can be reduced by using a core material of

A)

high density

B)

low density

C)

high resistivity

D)

low resistivity

View Answer
35) The unit of mutual inductance of a coil can be expressed as

A)

Wb-A

B)

Wb/A

C)

Wb/m

D)

       Wb-m

View Answer
36) If the values of resistance, inductive reactance and capacitive reactance in a series LCR AC circuit are \[3\,\Omega ,\] \[10\,\Omega \] and \[6\,\Omega \] respectively, the total impedance of the circuit is

A)

\[25\,\Omega \]

B)

\[\sqrt{7}\,\Omega \]

C)

\[5\,\Omega \]

D)

       \[19\,\Omega \]

View Answer
37) The potential difference V varies with time t as shown in the figure. The rms value of V is

A)

\[{{V}_{0}}\]

B)

\[2{{V}_{0}}\]

C)

\[{{V}_{0}}/2\]

D)

       \[{{V}_{0}}/\sqrt{2}\]

View Answer
38) If the ionization potential of hydrogen atom is 13.6 eV, its energy in the n=3 is approximately

A)

-1.14 eV

B)

-1.51 eV

C)

-3.4 eV

D)

       -4.53 eV

View Answer
39) The photoelectric work function of a metal is 3.3 eV. The threshold frequency for this metal is approximately

A)

\[3.3\times {{10}^{13}}\,Hz\]

B)

\[8.0\times {{10}^{14}}\,Hz\]

C)

\[1.65\times {{10}^{15}}\,Hz\]

D)

      \[9.9\times {{10}^{15}}\,Hz\]

View Answer
40) A particle of mass\[10\times {{10}^{-12}}\] kg is moving with a velocity \[6\times {{10}^{-7}}\]m/s Its de-Broglie wavelength is nearly

A)

\[\text{1}{{\text{0}}^{\text{-20}}}\,\text{m}\]

B)

\[\text{1}{{\text{0}}^{\text{-16}}}\,\text{m}\]

C)

\[\text{1}{{\text{0}}^{\text{-12}}}\,\text{m}\]

D)

       \[\text{1}{{\text{0}}^{\text{-8}}}\,\text{m}\]

View Answer
41) The mass numbers of nuclei A and B are respectively 135 and 5. The ratio of their radii is

A)

1 : 3

B)

3 : 1

C)

\[\sqrt{27}:1\]

D)

       \[1:\sqrt{27}\]

View Answer
42) The resistances of a semiconductor and of a conductor

A)

increase with temperature

B)

decrease with temperature

C)

increases and decreases respectively with temperature

D)

decreases and increases respectively with temperature

View Answer
43) The truth table

A B Y

1 1 0

1 0 1

0 1 1

0 0 1

is of the

A)

NAND gate

B)

OR gate

C)

NOT gate

D)

       AND gate

View Answer
44) The E and B vectors associated with an electromagnetic wave are

A)

parallel to each other and are in the same phase

B)

parallel to each other and are in opposite phases

C)

perpendicular to each other and are in opposite phases

D)

perpendicular to each other and are in the same phase

View Answer
45) The dimensions of energy per unit volume is the same as that of

A)

torque

B)

pressure

C)

acceleration

D)

       force

View Answer
46) A uniform thin ring of mass 0.4 kg rolls without slipping on a horizontal surface with a linear velocity of 10 cm/s. The kinetic energy of the ring is

A)

\[4\times {{10}^{-3}}\]

B)

\[4\times {{10}^{-2}}J\]

C)

\[2\times {{10}^{-3}}J\]

D)

       \[2\times {{10}^{-2}}J\]

View Answer
47) A car of mass 1000 kg travelling at a speed of 72 km/h hits a tree and comes to rest in 0.2 s. The average force on the car during the impact is

A)

\[36\times {{10}^{4}}N\]

B)

\[1\times {{10}^{5}}N\]

C)

\[36\times {{10}^{7}}N\]

D)

       \[36\times {{10}^{5}}N\]

View Answer
48) The distance \[x\] in metre, travelled by a panicle in time t second is given by \[x=0.5{{t}^{3}}+2{{t}^{2}}\]. The acceleration of the particle at t = 2 s is

A)

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

B)

\[4\,m/{{s}^{2}}\]

C)

\[8\,m/{{s}^{2}}\]

D)

\[10\,m/{{s}^{2}}\]

View Answer
49) Assume the earth to be a sphere of radius R. If g is the acceleration due to gravity at any point on the earths surface, the mass of the earth is

A)

\[\frac{gR}{G}\]

B)

\[\frac{{{g}^{2}}{{R}^{2}}}{G}\]

C)

\[\frac{g{{R}^{2}}}{G}\]

D)

       \[\frac{{{g}^{2}}R}{G}\]

View Answer
50) A body is projected with kinetic energy T at the angle of maximum range. Its kinetic energy at the highest point of the trajectory will be

A)

T

B)

\[\text{T/}\sqrt{\text{2}}\]

C)

T/2

D)

zero

View Answer
51) Aqueous solutions of lithium salts are not good conductors of electricity, because of

A)

high hydration energy of \[L{{i}^{+}}\] ion

B)

high ionization energy of \[L{{i}^{+}}\] ion

C)

small size of \[L{{i}^{+}}\] ion

D)

non-metallic character of \[L{{i}^{+}}\] ion

View Answer
52) For the equation\[2A+BB{{A}_{2}}\], the equilibrium concentration of \[A,\,\,B,\,\,B{{A}_{2}}\] is 4, 2 and 2 respectively. The value of \[{{K}_{c}}\] will be

A)

\[0.0625\]

B)

\[0.625\]

C)

\[6.280\]

D)

       \[6.250\]

View Answer
53) Relationship between equilibrium constant \[({{K}_{c}})\] and Gibbs energy \[(\Delta {{G}^{o}})\] at temperature \[T\] may be given by the expression

A)

\[\Delta {{G}^{o}}=-{{K}_{c}}\log RT\]

B)

\[\Delta {{G}^{o}}=-RT\log {{K}_{c}}\]

C)

\[\Delta {{G}^{o}}=-\frac{\log RT}{{{K}_{c}}}\]

D)

\[\Delta {{G}^{o}}=-\log \frac{{{K}_{c}}}{RT}\]

View Answer
54) Given for \[HA\] acid, \[{{K}_{a}}={{10}^{-6}}\] and for\[MOH\] base,\[{{K}_{b}}={{10}^{-6}}.\] The \[pH\] of \[0.1\,\,M\,\,MA\] salt solution will be

A)

5

B)

7

C)

9

D)

       2

View Answer
55) The \[pH\] of an aqueous solution of a \[1\times {{10}^{-7}}M\] solution of \[HCl\] will be

A)

7

B)

slightly less than 7

C)

slightly greater than 7

D)

1

View Answer
56) What will be the concentration \[{{H}^{+}}\] ions in \[0.1\,\,M\] acetic acid and \[0.1\,\,M\] sodium acetate solution, if the dissociation constant of acetic acid is\[1.8\times {{10}^{-5}}\]?

A)

\[1.8\times {{10}^{-7}}\]

B)

\[1.8\times {{10}^{-5}}\]

C)

\[1.8\times {{10}^{-2}}\]

D)

       \[1.8\times {{10}^{-3}}\]

View Answer
57) A system absorbs reversibly \[600\,\,J\] of heat and preforms \[250\,\,J\] of work. The increase in the internal energy of system is

A)

\[850\,\,J\]

B)

\[250\,\,J\]

C)

\[600\,\,J\]

D)

       \[350\,\,J\]

View Answer
58) For the reaction \[A+2B\xrightarrow[{}]{{}}\]Products, the differential rate equation is

A)

\[-\frac{1}{2}\frac{d[A]}{dt}=\frac{-d[B]}{dt}=k[A]{{[B]}^{2}}\]

B)

\[\frac{1}{2}-\frac{d[A]}{dt}=\frac{d[B]}{dt}=k[A]{{[B]}^{2}}\]

C)

\[\frac{-d[A]}{dt}=-\frac{1}{2}\frac{d[B]}{dt}=k[A]{{[B]}^{2}}\]

D)

\[\frac{d[A]}{dt}=\frac{1}{2}\frac{d[B]}{dt}=k[A]{{[B]}^{2}}\]

View Answer
59) For reversible melting of ice at \[{{0}^{o}}C\] and \[1\,\,atm\]. pressure, the value of \[\Delta G\] will be

A)

\[\text{0(zero)}\]

B)

\[\text{0(zero)}\]

C)

\[\text{0(zero)}\]

D)

       \[\infty (\text{infinity})\]

View Answer
60) The \[{{t}_{1/2}}\] of a reaction is halved as the initial concentration of the reactant is doubled. What is the order of reaction?

A)

First order

B)

Zero order

C)

Second order

D)

       Third order

View Answer
61) Fog is a colloidal system of

A)

gas in liquid

B)

liquid in gas

C)

gas in gas

D)

       gas in solid

View Answer
62) Semi-permeable membrane allows

A)

a solution to pass through it

B)

solute to pass through it

C)

solvent to pass through it

D)

both the solute and solvent to pass through it

View Answer
63) The molarity of a solution containing \[5\,\,g\] of \[NaOH\] in \[450\,\,mL\] solution will be

A)

\[0.189\,\,mol\,\,d{{m}^{-3}}\]

B)

\[0.278\,\,mol\,\,d{{m}^{-3}}\]

C)

\[0.556\,\,mol\,\,d{{m}^{-3}}\]

D)

\[0.027\,\,mol\,\,d{{m}^{-3}}\]

View Answer
64) The oxidation state of sulphur in \[{{H}_{2}}S{{O}_{5}}\] and of chromium in \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\] respectively is

A)

\[8,\,\,6\]

B)

\[4,\,\,6\]

C)

\[8,\,\,8\]

D)

       \[6,\,\,6\]

View Answer
65) If the cell reaction is spontaneous, then

A)

\[{{E}^{o}}=-ve\]

B)

\[{{E}^{o}}=+ve\]

C)

\[emf=+ve\]

D)

       \[(\Delta G+{{E}^{o}})=+ve\]

View Answer
66) For the \[Zn-Cu\] cell,\[{{E}^{o}}=1.10\,\,V.\] If the reduction potential of \[C{{u}^{2+}}(aq)|Cu(s)\] couple is \[0.34\,\,V\], then the reduction potential of \[Z{{n}^{2+}}(aq)|Zn(s)\] couple will be

A)

\[-0.76\,\,V\]

B)

\[0.76\,\,V\]

C)

\[7.6\,\,V\]

D)

\[0.38\,\,V\]

View Answer
67) An example of a cyclic silicate is

A)

beryl

B)

zeolite

C)

talc

D)

       feldspar

View Answer
68) Which halide is unknown?

A)

\[Tl(III)\]iodide

B)

\[\ln (III)\]bromide

C)

\[Ga(III)\]fluoride

D)

\[B(III)\]chloride

View Answer
69) Colourless ion-pair is

A)

\[C{{u}^{+}},\,\,Z{{n}^{2+}}\]

B)

\[C{{u}^{2+}},\,\,Z{{n}^{2+}}\]

C)

\[{{V}^{3+}},\,\,C{{r}^{3+}}\]

D)

       \[M{{n}^{3+}},\,\,F{{e}^{3+}}\]

View Answer
70) Similar sizes of second and third transition elements can be explained on the basis of

A)

inert-pair effect

B)

screening effect

C)

lanthanide contraction

D)

increasing effective nuclear charge

View Answer
71) A transitional metal complex adopts \[{{t}_{2g}}^{4}e_{g}^{2}\] configuration. The nature of ligand surrounding the ion is

A)

strong field

B)

weak field

C)

neutral

D)

       \[+ve\] field

View Answer
72) Ether and benzene can be separated by

A)

filtration

B)

distillation

C)

crystallization

D)

                     sublimation

View Answer
73) Consider the following compounds Correct order of their reactivity in electrophilic substitution reactions would be

A)

\[I>II>III>IV\]

B)

\[IV>III>II>I\]

C)

\[III>II>I>IV\]

D)

\[III>IV>I>II\]

View Answer
74) Ozonolysis of a hydrocarbon gives one mole of acetone and one mole of formaldehyde. The hydrocarbon is

A)

propene

B)

2-methylpropene

C)

2-methyl-2-butene

D)

2-methyl-1-butene

View Answer
75) In the free-radical halogenation of alkanes, chain propogating step is

A)

\[C{{l}_{2}}\xrightarrow{hv}2C{{l}^{\bullet }}\]

B)

\[C{{H}_{4}}+C{{l}^{\bullet }}\xrightarrow{{}}C{{H}_{3}}Cl+{{H}^{\bullet }}\]

C)

\[C{{H}_{4}}+C{{l}^{\bullet }}\xrightarrow{{}}CH_{3}^{\bullet }+HCl\]

D)

\[CH_{3}^{\bullet }+C{{l}^{\bullet }}\xrightarrow{{}}C{{H}_{3}}Cl\]

View Answer
76) Correct \[IUPAC\] name is

A)

3-methyl-2-ethylpentane

B)

2-ethyl-3-methylpentane

C)

3-ethyl-2-methylpentane

D)

2-ethyl-2-methylpentane

View Answer
77) By heating which mixture propane nitile be obtained?

A)

Ethyl alcohol\[+KCN\]

B)

Propyl alcohol\[+KCN\]

C)

Ethyl chloride\[+KCN\]

D)

Propyl chloride\[+KCN\]

View Answer
78) A is

A)

B)

C)

\[1:1\] mixture of both (a) and (b)

D)

\[C{{H}_{3}}-CH=CH-C{{H}_{3}}\]

View Answer
79) Correct increasing order of acidity of the following phenols is

A)

B)

C)

D)

View Answer
80) \[p,\,\,s\] and \[t-\]alcohols can be distinguished by

A)

Reimer-Tiemann reaction

B)

Tollens reagent

C)

Lucas test

D)

Lassaignes test

View Answer
81) Major product of the reaction \[{{(C{{H}_{3}})}_{3}}C-Cl+{{C}_{2}}{{H}_{5}}ONa\xrightarrow{{}}\] would be

A)

\[{{(C{{H}_{3}})}_{2}}C-O{{C}_{2}}{{H}_{5}}\]

B)

\[{{(C{{H}_{3}})}_{3}}C-{{C}_{2}}{{H}_{5}}\]

C)

\[{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\]

D)

\[C{{H}_{3}}-CH=CH-{{C}_{2}}{{H}_{5}}\]

View Answer
82) Which of the following compounds would exhibit highest dipole moment?

A)

Ethers

B)

Alcohols

C)

Carbonyl compounds

D)

Carboxylic acids

View Answer
83) Ketones can be prepared by

A)

Rosenmund reduction

B)

Etard reaction

C)

Cannizaro reaction

D)

Friedel-Craft reaction

View Answer
84) Biuret test is characteristic of compounds containing the functional group

A)



B)

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

C)

\[-CONH-\]

D)

       \[-C\equiv H\]

View Answer
85) When propanoic acid is treated with aqueous sodium bicarbonate, \[C{{O}_{2}}\] is liberated. The carbon of \[C{{O}_{2}}\] comes from

A)

methyl group

B)

carboxylic acid group

C)

methylene group

D)

bicarbonate

View Answer
86) , the product P is

A)

B)

C)

D)

View Answer
87) Benzene diazonium chloride on treatment with ethanol gives

A)

chlorobenzene

B)

benzene

C)

phenol

D)

aniline

View Answer
88) \[{{C}_{2}}{{H}_{5}}Cl\xrightarrow{N{{H}_{3}}}A\xrightarrow{{{C}_{2}}{{H}_{5}}Cl}B\xrightarrow{{{C}_{2}}{{H}_{5}}Cl}C\] \[A,\,\,B\] and \[C\] respectively are

A)

\[{{C}_{2}}{{H}_{5}}N{{H}_{2}},\,\,{{({{C}_{2}}{{H}_{5}})}_{2}}NH,\,\,{{({{C}_{2}}{{H}_{5}})}_{3}}N\]

B)

\[{{C}_{2}}{{H}_{5}}N{{H}_{2}},\,\,{{C}_{2}}{{H}_{5}}NH-Cl,\,\,{{C}_{2}}{{H}_{5}}-NC{{l}_{2}}\]

C)

\[{{C}_{2}}{{H}_{5}}N{{H}_{2}},\,\,C{{H}_{2}}=C{{H}_{2}},\]\[Cl-C{{H}_{2}}-C{{H}_{2}}-{{C}_{2}}{{H}_{5}}\]

D)

\[{{C}_{2}}{{H}_{5}}N{{H}_{2}},\,\,{{({{C}_{2}}{{H}_{5}})}_{3}}N,\,\,{{({{C}_{2}}{{H}_{5}})}_{2}}NH\]

View Answer
89) Heating a mixture of a primary alkyl amine and chloroform with ethanolic potassium hydroxide gives

A)

alkyl chloride

B)

alkyl alcohol

C)

alkyl isocyanide

D)

alkene

View Answer
90) Weakest intermolecular forces are present in

A)

neoprene

B)

terylene

C)

polystyrene

D)

       bakelite

View Answer
91) Which among the following is a tranquilizer?

A)

Equanil

B)

Promethazine

C)

Omeprazole

D)

       Cimetidine

View Answer
92) If the de-Broglie wavelength of the fourth Bohr orbit of hydrogen atom is\[4\overset{\text{o}}{\mathop{\text{A}}}\,\], the circumference of the orbit will be

A)

\[4\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

\[4\,\,nm\]

C)

\[16\,\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

       \[16\,\,nm\]

View Answer
93) The photoelectric work function depends upon the

A)

nature of metal

B)

intensity of radiation

C)

time of radiation

D)

kinetic energy of photoelectron

View Answer
94) The value of \[n=2\] and \[l=1\], the type of orbital would be

A)

\[2s\]

B)

\[2p\]

C)

\[1s\]

D)

       \[3p\]

View Answer
95) The modern Periodic Table has been divided into

A)

seven periods: three short and four long

B)

nine periods: six short and three long

C)

eighteen periods: ten short and eight long

D)

nine periods from zero to VIII

View Answer
96) Among \[K,\,\,{{K}^{+}},\,\,S{{r}^{2+}},\,\,Ar,\] which atom/ion will have the smallest radius?

A)

\[{{K}^{+}}\]

B)

\[S{{r}^{2+}}\]

C)

\[Ar\]

D)

       \[K\]

View Answer
97) Which of the following is paramagnetic?

A)

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

B)

\[C{{N}^{-}}\]

C)

\[CO\]

D)

       \[N{{O}^{+}}\]

View Answer
98) The fusible mass obtained from high melting oxide in the gangue is called

A)

flux

B)

slag

C)

matte

D)

       matrix

View Answer
99) The melting point of \[NaCl\] is high because

A)

the distance between the ions is large

B)

repulsion exists within \[NaCl\] lattice

C)

lattice energy is high

D)

size of sodium as well as chlorine is big

View Answer
100) The bond angle in water molecule is less than in ammonia molecule, due to the

A)

presence of two lone pairs in \[{{H}_{2}}O\] molecule

B)

presence of three lone pairs in \[{{H}_{2}}O\] molecule

C)

presence of two lone pairs in \[N{{H}_{3}}\] molecule

D)

high electronegativity of oxygen atom

View Answer
101) The endometrium is the lining of

A)

bladder

B)

vagina

C)

uterus

D)

       oviduct

View Answer
102) GIFT

A)

transfer of zygote into the fallopian tube

B)

transfer of embryo into the uterus

C)

transfer of mixture of sperms and ova into the fallopian tube

D)

transfer of mixture of sperms and ova into the uterus

View Answer
103) Fusion of dissimilar gametes is known as

A)

fertilization

B)

dichogamy

C)

autogamy

D)

       allogamy

View Answer
104) The process of translation is

A)

DNA synthesis

B)

RNA synthesis

C)

protein synthesis

D)

ribosome synthesis

View Answer
105) The codon for anti-codon\[\text{3 }\!\!\!\!\text{ UUUA5 }\!\!\!\!\text{ }\] is

A)

\[\text{3 }\!\!\!\!\text{ -UUUA-5 }\!\!\!\!\text{ }\]

B)

\[\text{5 }\!\!\!\!\text{ -UAAA-3 }\!\!\!\!\text{ }\]

C)

\[\text{5 }\!\!\!\!\text{ -AAAU-3 }\!\!\!\!\text{ }\]

D)

       \[\text{3 }\!\!\!\!\text{ -UAAU-5 }\!\!\!\!\text{ }\]

View Answer
106) A kind of biotechnology involving manipulation of DNA is

A)

DNA replication

B)

genetic engineering

C)

denaturation

D)

renaturation

View Answer
107) What is true for plasmid?

A)

Found in viruses

B)

Contains genes for vital activities

C)

Part of nuclear chromosome

D)

Widely used in gene transfer

View Answer
108) DNA fingerprinting technique was discovered by

A)

Wilmut

B)

A. Jeffreys

C)

Ethoven

D)

       Kary Mullis

View Answer
109) The term Vaccine was introduced by

A)

Jenner

B)

Koch

C)

Pasteur

D)

Jointly by Koch and Pasteur

View Answer
110) The immune system is made of

A)

humoral system

B)

humoral and cell mediated systems

C)

humoral and fibrous systems

D)

antigen induced antibodies

View Answer
111) Minamata disease is caused due to presence of...... in water.

A)

cadmium

B)

lead

C)

arsenic

D)

       mercury

View Answer
112) Amniocentesis detects

A)

deformity in brain

B)

deformity in heart

C)

hereditary disease

D)

All of the above

View Answer
113) Metastasis is associated with

A)

malignant tumours

B)

benign tumours

C)

Both a and b

D)

crown gall tumour

View Answer
114) Which was absent in the atmosphere at the time of origin of life?

A)

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

B)

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

C)

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

D)

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

View Answer
115) Organic compounds first evolved in earth required for origin of life were

A)

urea and amino acids

B)

proteins and nucleic acids

C)

proteins and amino acids

D)

urea and nucleic acids

View Answer
116) Homologous organs indicate the

A)

convergent evolution

B)

parallel evolution

C)

common descendent

D)

natural selection

View Answer
117) The first organism to be found on a bare rock is

A)

moss

B)

                      alga

C)

lichen

D)

       fem

View Answer
118) The phrase Omnis cellula e cellula was given by

A)

Virchow

B)

Pasteur

C)

Schleilden

D)

       Brown

View Answer
119) Starfish belongs to the class

A)

Pisces

B)

Cephalopoda

C)

Asteroidea

D)

Ophuroidea

View Answer
120) Which of the following is not an insect?

A)

Ant

B)

Mosquito

C)

Spider

D)

       Locusts

View Answer
121) The canal system is characteristic feature of

A)

sponges

B)

helminthes

C)

echinoderms

D)

       coelenterates

View Answer
122) In Protozoa, like Amoeba and Paramecium, the organ found for osmoregulation is

A)

nucleus

B)

food vacuole

C)

mitochondria

D)

       contractile vacuole

View Answer
123) Which of the following organisms is pseudocoelomate?

A)

Hookworm

B)

Liver fluke

C)

Jellyfish

D)

       Leech

View Answer
124) Mammals heart is

A)

myogenic

B)

neurogenic

C)

voluntary

D)

       sympathetic

View Answer
125) Natural parthenogenesis is found in

A)

housefly

B)

honey bee

C)

Drosophila

D)

       All of these

View Answer
126) Which of the following snake is non-poisonous?

A)

Cobra

B)

Krait

C)

Viper

D)

       Pyrhon

View Answer
127) A group of animals having marsupium is

A)

Monotremata

B)

Eutheria

C)

Metatheria

D)

                       Pantotheria

View Answer
128) Which of the following belongs to Phylum- Arthropoda?

A)

Starfish

B)

Goldfish

C)

Silver fish

D)

       Cuttlefish

View Answer
129) Browsing by animals is an example of

A)

Parasitism

B)

predation

C)

Commensalism

D)

ferns

View Answer
130) Intermediate community between pioneer and climax communities is called

A)

seral community

B)

biotic community

C)

temporary community

D)

ecosere

View Answer
131) In parasitic food chain, the pyramid of number is

A)

inverted

B)

upright

C)

linear

D)

       Both a and b

View Answer
132) Ten per cent law of energy transfer in a food chain is given by

A)

Schimper

B)

Eiton

C)

Haeckel

D)

       Lindemann

View Answer
133) In a food chain the largest population is that of

A)

producers

B)

decomposers

C)

secondary consumers

D)

primary consumers

View Answer
134) Initiation codon is

A)

AUG

B)

AGU

C)

AAU

D)

       AUA

View Answer
135) Apoenzyme is

A)

protein

B)

carbohydrate

C)

vitamin

D)

       amino acid

View Answer
136) Which amino acids are present in histones?

A)

Lysine and histidine

B)

Valine and histidine

C)

Arginine and lysine

D)

Arginine and histidine

View Answer
137) Glycogenolysis involves

A)

conversion of sugar into glycogen

B)

oxidation of sugar

C)

conversion of glycogen into sugar

D)

conversion of glycogen into fat

View Answer
138) The two strands of the DNA double helix are

A)

held together by

B)

hydrogen bonds

C)

hydrophobic bonds

D)

peptide bonds phosphodiester bonds

View Answer
139) A polygenic inheritance in human beings is

A)

skin colour

B)

sickle cell anaemia

C)

colour blindness

D)

phenylketonuria

View Answer
140) A woman with albinic father marries an albinic man. The proportion of her progeny is

A)

2 normal: 1 albinic

B)

all normal

C)

all albinic

D)

       1 normal: 1 albinic

View Answer
141) A cross between pure tall pea plant with green pods and dwarf pea with yellow pods will produce tall F2 plants, out of 16

A)

15

B)

13

C)

12

D)

       7

View Answer
142) Dihybrid cross is related to the principle of

A)

dominance

B)

segregation

C)

independent assortment

D)

Hybridization

View Answer
143) Emasculation is related to

A)

pure line

B)

mass selection

C)

clonal selection

D)

hybridization

View Answer
144) Which sound producing organ is found in bird?

A)

Pharynx

B)

Larynx

C)

Syrinx

D)

Trachea

View Answer
145) During expiration, the diaphragm becomes

A)

normal

B)

flattened

C)

dome-shaped

D)

oblique

View Answer
146) Serum is

A)

blood without fibrinogen

B)

lymph without corpuscles

C)

blood without corpuscles and fibrinogen

D)

lymph

View Answer
147) In a healthy adult man the normal diastolic pressure is

A)

90 mm Hg

B)

120 mm Hg

C)

80 mm Hg

D)

       100 mm Hg

View Answer
148) The joint of radio-ulna with the upper arm is

A)

hinge joint

B)

       pivot joint

C)

socket joint

D)

       None of these

View Answer
149) Sertoli cells are found in

A)

heart

B)

liver

C)

germinal epithelium

D)

seminiferous tubules

View Answer
150) At the time of implantation, the human embryo is called

A)

embryo

B)

blastocyst

C)

zygote

D)

       foetus

View Answer
151) Nucleic acid segment tagged with a radiactive molecule is called

A)

clone

B)

probe

C)

plasmid

D)

vector

View Answer
152) GM brinjal in India has been developed for resistance against

A)

virus

B)

bacteria

C)

fungi

D)

       insects

View Answer
153) The drug cyclosporin used for organ transplant patients is obtained from a

A)

bacterium

B)

fungus

C)

virus

D)

       plant

View Answer
154) A common biocontrol agent for the control of plant diseases

A)

Agrobacterium

B)

Glomus

C)

Trichoderma

D)

       Baculovirus

View Answer
155) Powdery mildew of wheat is caused by a species of

A)

Puccinia

B)

Erysiphe

C)

Ustilago

D)

       Albugo

View Answer
156) In paddy fields biological nitrogen fixation is chiefly brought by

A)

cyanobacteria

B)

green algae

C)

mycorrhiza

D)

       Rhizobium

View Answer
157) An important drug is obtained from the bark of

A)

Papaver

B)

Cinchona

C)

Withania

D)

       Momordica

View Answer
158) Germplasm conservation in situ is done by

A)

biosphere reserves

B)

botanical gardens

C)

germplasm banks

D)

pollen banks

View Answer
159) In five-kingdom classification, Euglena is placed in

A)

Monera

B)

Protista

C)

Fungi

D)

       Animalia

View Answer
160) Nucleic acid is absent in

A)

virus

B)

viroid

C)

prion

D)

       mycoplasma

View Answer
161) In most fungi, cell wall is chiefly made of

A)

cellulose

B)

chitin

C)

protein

D)

       lipid

View Answer
162) Sporophyte is not an independent generation in

A)

bryophytes

B)

pteridophytes

C)

gymnospenns

D)

angiosperms

View Answer
163) Both pteridophytes and gymnospenns have

A)

seeds

B)

independent gametophytes

C)

archegonia

D)

ovules

View Answer
164) Heterocysts are present in

A)

Riccia

B)

Ulothrix

C)

Albugo

D)

Nostoc

View Answer
165) In Albugo, sexual reproduction results in the formation of

A)

zygospore

B)

oospore

C)

basidiospore

D)

teliospore

View Answer
166) Double fertilization occurs in

A)

Riccia

B)

Pteridium

C)

Cycas

D)

Capsella

View Answer
167) Velamen is present in roots of

A)

Vanda

B)

Rhizophora

C)

Asparagus

D)

       Maize

View Answer
168) In Ruscus, the stem is a

A)

phyllode

B)

cladode

C)

offset

D)

       sucker

View Answer
169) In turmeric, stem is a

A)

tuber

B)

bulb

C)

rhizome

D)

       corm

View Answer
170) Catkin inflorescence is found in

A)

wheat

B)

oat

C)

mulberry

D)

       fig

View Answer
171) A racemose type of inflorescence with its main axis almost flat is called

A)

corymb

B)

umbel

C)

spike

D)

       capitulum

View Answer
172) Epigynous flowers are present in

A)

mustard

B)

brinjal

C)

China rose

D)

       cucumber

View Answer
173) A small, dry, one-seeded fruit with its pericarp fused with the seed-coat, developing from a monocarpellary gynoecium is called

A)

cypsela

B)

siliqua

C)

caryopsis

D)

       samara

View Answer
174) Spathe is present in the flowers of

A)

banana

B)

rice

C)

marigold

D)

sunflower

View Answer
175) In Dianthus, placentation is

A)

basal

B)

free central

C)

axile

D)

       marginal

View Answer
176) Ovary is half-inferior in the flower of

A)

apple

B)

guava

C)

peach

D)

       garlic

View Answer
177) The term keel is used for special type of

A)

sepals

B)

petals

C)

stamens

D)

       carpels

View Answer
178) Polyadelphous stamens are found in

A)

cotton

B)

sunflower

C)

grain

D)

       lemon

View Answer
179) Replum is the characteristic feature of the ovary of

A)

Asteraceae

B)

Brassicaceae

C)

Malvaceae

D)

       Liliaceae

View Answer
180) Coffee and quinine are obtained from the

A)

Leguminosae

B)

Asteraceae

C)

Rubiaceae

D)

       Poaceae

View Answer
181) Which of the following includes largest number of genera and species of plants?

A)

Brassicaceae

B)

Liliaceae

C)

Malvaceae

D)

       Asteraceae

View Answer
182) Flowers are zygomorphic in

A)

mustard

B)

radish

C)

lily

D)

       candytuft

View Answer
183) An old trunk of shisham (Dalbergia sissoo) tree would possess maximum amount of

A)

primary xylem

B)

       secondary xylem

C)

primary phloem

D)

       secondary cortex

View Answer
184) Vascular bundles are arranged in a ring in stem of

A)

wheat

B)

rice

C)

gram

D)

maize

View Answer
185) Kranz anatomy can be observed in leaves of

A)

sorghum

B)

spinach

C)

mustard

D)

       tulip

View Answer
186) In higher plants, transport of food material occurs through

A)

companion cells

B)

sieve elements

C)

tracheids

D)

       transfusion tissue

View Answer
187) The term bark refers to

A)

phellem, phelloderm and vascular cambium

B)

periderm and secondary xylem

C)

cork cambium and cork

D)

phellogen, phellem, phelloderm and secondary phloem

View Answer
188) In angiosperms, female gametophyte is represented by

A)

ovule

B)

nucellus

C)

megaspore mother cell

D)

embryo sac

View Answer
189) The transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

A)

geitonogamy

B)

autogamy

C)

karyogamy

D)

       xenogamy

View Answer
190) Development of embryo from nucellar cell is common in many varieties of

A)

citrus

B)

sunflower

C)

oat

D)

       marigold

View Answer
191) Endosperm is not completely consumed during embryo development in seeds of

A)

gram

B)

pea

C)

bean

D)

       castor

View Answer
192) Developing pollen grains in microsporangium get their nourishment from

A)

epidermis

B)

endothecium

C)

middle layer

D)

tapetum

View Answer
193) Light reaction in stroma lamellae of the chloroplast results in the formation of

A)

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

B)

\[ATP+NADP{{H}_{2}}\]

C)

ATP

D)

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

View Answer
194) One of the commonly used plant growth hormone in tea plantations is

A)

ABA

B)

zeatin

C)

\[{{I}_{AA}}\]

D)

       ethylene

View Answer
195) Leghaemoglobin in root nodules of legumes

A)

protects nitrogenase

B)

converts \[{{N}_{3}}\] to \[N{{H}_{3}}\]

C)

oxidizes \[N{{O}_{2}}\] to \[N{{O}_{3}}\]

D)

helps in development of infection threads

View Answer
196) The chief sinks for the mineral elements are

A)

senescent leaves

B)

ripe fruits

C)

lateral meristems

D)

bark

View Answer
197) In leaves of \[{{C}_{4}}\] plants malic acid synthesis during \[C{{O}_{2}}\] fixation occurs in

A)

bundle sheath

B)

mesophyll

C)

epidermis

D)

guard cells

View Answer
198) Which of the following helps in maintenance of cell shape

A)

plasmalemma

B)

endoplasmic reticulum

C)

cytoskeleton

D)

mesosome

View Answer
199) Membrane is absent in

A)

nucleus

B)

nucleolus

C)

vacuole

D)

       lysosome

View Answer
200) A suitable vector gene cloning in higher

A)

organisms is

B)

baculovirus

C)

retrovirus

D)

Salmonella typhimurium Neurospora crassa

View Answer