Solved papers for MGIMS WARDHA MGIMS WARDHA Solved Paper-2003

MGIMS WARDHA Solved Paper-2003 Total Questions - 180

1) Two spherical shells one which is placed in air has constant charge \[{{Q}_{1}}.\] and the other which is placed in a medium of dielectric constant K has a charge \[{{Q}_{2}}.\] The ratio of forces between the shells is:

A)

\[K:1\]

B)

\[1:K\]

C)

\[{{K}^{2}}:1\]

D)

\[1:{{K}^{2}}\]

View Answer
2) A particle of unit mass and specific charge s is thrown from the wall perpendicularly to a wall at a distance d from the wall with speed \['\upsilon '.\] The minimum magnetic field produced so that the particle does not touch the wall, is:

A)

\[\frac{\upsilon }{sd}\]

B)

\[\frac{2\upsilon }{sd}\]

C)

\[\frac{\upsilon }{2sd}\]

D)

\[\frac{\upsilon }{4sd}\]

View Answer
3) A block of mass 1 kg is placed on the wall under a force F. If coefficient of L   friction \[(\mu )\] is 0.5, then minimum value F of force applied is :

A)

9.8 N

B)

49 N

C)

19.6 N

D)

1.96 N

View Answer
4) Mass of a planet is 10 times that of earth and radius is 2 times that of earth. If at the earth, the escape velocity of a satellite is \[{{\upsilon }_{es(e),}}\] then escape velocity at the planet is :

A)

\[\sqrt{5}\,\,{{\upsilon }_{es(e)}}\]

B)

\[5\,\,{{\upsilon }_{es(e)}}\]

C)

\[2\sqrt{5}\,\,{{\upsilon }_{es(e)}}\]

D)

\[10\,\,{{\upsilon }_{es(e)}}\]

View Answer
5) An electron beam is accelerated through a potential difference of V volt. The minimum   wavelength   of   X-rays produced is :

A)

\[\frac{he}{cV}\]

B)

\[\frac{cV}{he}\]

C)

\[\frac{eV}{hc}\]

D)

\[\frac{hc}{eV}\]

View Answer
6) Light waves of wavelength \[\lambda \] is incident on a metal of work function \[\theta \] Maximum velocity of the electron is :

A)

\[{{\left[ \frac{2(h\lambda -\theta )}{m} \right]}^{1/2}}\]

B)

\[{{\left[ \frac{2(h\lambda -\lambda \theta )}{m\lambda } \right]}^{1/2}}\]

C)

\[\frac{2(hc-\lambda \theta )}{m}\]

D)

\[\left[ \frac{hc+\lambda \theta }{m\lambda } \right]\]

View Answer
7) A car and a container, moving with equal kinetic energies are stopped by applying a negative acceleration. Then

A)

container will move less distance before being stopped

B)

both will become stationary after moving some distance

C)

car will move less distance before being stopped

D)

none of the above

View Answer
8) Eight small drops, each of equal charges and radii are coalesce to form a big drop. The capacity of bigger drop in comparison to each smaller drop will be :

A)

4 times

B)

2 times

C)

32 times

D)

8 times

View Answer
9) An organ pipe, opened at both ends, has fundamental frequency of 30 Hz. If one of its ends is closed/ then fundamental frequency will be :

A)

15 Hz

B)

30 Hz

C)

45 Hz

D)

60 Hz

View Answer
10) A charged particle is moving in a uniform magnetic field in a circular path of radius R. When energy of the particle is doubled, then the new radius will be :

A)

\[R\]

B)

\[R\sqrt{2}\]

C)

\[R/\sqrt{2}\]

D)

\[2R\]

View Answer
11) A capacitor of capacity C is charged by connecting it with R according to the figure. Energy supplied by the battery in this process is :

A)

more than \[\frac{1}{2}C{{V}^{2}}\]

B)

\[\frac{1}{2}C{{V}^{2}}\]

C)

\[2C{{V}^{2}}\]

D)

less than\[\frac{1}{2}C{{V}^{2}}\]

View Answer
12) If a current is flowing in a spring, then it:

A)

compress

B)

swing

C)

expand

D)

remain unaffected

View Answer
13) The mass of a solid sphere is 2 kg and radius is 10 cm. Sphere, tied to one end of 1 m long string, is rotated at a rate of 10rad/sec. The rotational kinetic energy of sphere is :

A)

121.4 J

B)

185J

C)

15.2 J

D)

22.0 J

View Answer
14) A rocket is accelerated with speed \[\upsilon =2\sqrt{g{{R}_{e}}}\] near earth surface and then it moves upward. At far distance from the earth surface, the speed of the rocket will be:

A)

\[\sqrt{g{{R}_{e}}/2}\]

B)

\[\sqrt{g{{R}_{e}}}\]

C)

\[(2-\sqrt{2})\sqrt{g{{R}_{e}}}\]

D)

\[\sqrt{2g{{R}_{e}}}\]

View Answer
15) In the rotational motion, different particles of the body have :

A)

both linear and angular velocities equal

B)

linear velocities equal but different angular velocities

C)

angular velocities equal but different linear velocities

D)

both linear and angular velocity different

View Answer
16) Two bulbs A and B are connected in parallel. Bulb A will glow more than bulb B. If their resistances are \[{{R}_{A}}\] and \[{{R}_{A}}\] respectively. Then :

A)

\[{{R}_{A}}<{{R}_{B}}\]

B)

\[{{R}_{A}}={{R}_{B}}\]

C)

\[{{R}_{A}}>{{R}_{B}}\]

D)

none of these

View Answer
17) A body has initial temperature of 80°C. It cools by radiation process. In 5 minutes, it cools down to 64°C and in 10 minutes, it cools down to 52°C. The temperature of surrounding is:

A)

8°C

B)

16°C

C)

32°C

D)

24°C

View Answer
18) The surface tension of the soap solution is T. The work done in forming a soap bubble of radius r, is:

A)

\[8\pi {{r}^{2}}T\]

B)

\[4\pi {{r}^{2}}T\]

C)

\[\frac{4}{3}\pi {{r}^{2}}T\]

D)

\[\frac{8}{3}\pi {{r}^{2}}T\]

View Answer
19) A radioactive substance containing N atoms emits \[n\,\alpha \]-particles per second, Half-life of the substance is :

A)

\[\frac{N}{n}\sec \]

B)

\[\frac{n}{N}\sec \]

C)

\[\frac{0.693n}{N}\sec \]

D)

\[\frac{0.693N}{n}\sec \]

View Answer
20) A car covers 2/5 of a certain distance with speed \[{{\upsilon }_{1}}\] and rest 3/5 part with velocity \[{{\upsilon }_{2.}}\] The average speed of the car is:

A)

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

B)

\[\frac{5{{\upsilon }_{1}}{{\upsilon }_{1}}}{3{{\upsilon }_{1}}+2{{\upsilon }_{2}}}\]

C)

\[\frac{2{{\upsilon }_{1}}{{\upsilon }_{2}}}{{{\upsilon }_{1}}+{{\upsilon }_{2}}}\]

D)

\[\frac{{{\upsilon }_{1}}+{{\upsilon }_{2}}}{2}\]

View Answer
21) If the temperature of a black body is doubled, the wavelength at which the spectral radiancy has its maximum, is :

A)

doubled

B)

halved

C)

quadrupled

D)

unchanged

View Answer
22) A light wave travels from glass to water. The refractive indices for glass and water are\[\frac{3}{2}\]and\[\frac{4}{3}\] respectively. The value of the critical angle will be:

A)

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

B)

\[{{\sin }^{-1}}\left( \frac{9}{8} \right)\]

C)

\[{{\sin }^{-1}}\left( \frac{9}{8} \right)\]

D)

\[{{\sin }^{-1}}\left( \frac{5}{7} \right)\]

View Answer
23) In a radioactive decay \[^{92}{{U}_{238}}\xrightarrow{\alpha }X\xrightarrow{\alpha }z{{Y}^{A}}\]The values of Z and A:

A)

92, 236

B)

88, 230

C)

90, 130

D)

88, 234

View Answer
24) Magnetic and electric field are acting on a proton moving with velocity \[\upsilon .\] Proton will be undefeated if:

A)

E is parallel to \[\upsilon .\] but perpendicular to B

B)

E and B both are parallel to \[\upsilon .\]

C)

E and B are perpendicular to each other

D)

E B and v are perpendicular to one another and \[\upsilon =\frac{E}{B}\]

View Answer
25) The unit of permittivity \[({{\varepsilon }_{0}})\] of space- is :

A)

newton-metre 2 /coulomb2

B)

coulomb/newton-metre

C)

coulomb/newton-metre2

D)

coulomb/newton-metre2

View Answer
26) Two charges each of equal magnitude \[3.2\times {{10}^{-19}}\]coulomb but of opposite sign form an electric dipole. The distance between the two charges is 2.4 Å. If the dipole is placed in an electric field of \[5\times {{10}^{5}}\]volt/metre, then in equilibrium its potential energy will be :

A)

\[3\times {{15}^{-23}}\]joule

B)

\[-3.84\times {{10}^{-23}}\]joule

C)

\[-6\times {{W}^{23}}\]joule

D)

\[-2\times {{10}^{-}}^{26}\]joule

View Answer
27) The wavelength of light coming from a distant galaxy is found to be 0.5% greater than the wavelength of light coming from a stationary source. The galaxy is :

A)

coming towards earth with velocity of light

B)

moving away from earth with velocity \[1.5\times {{10}^{6}}m/sec\]

C)

stationary with respect to earth

D)

moving away from earth with velocity of light

View Answer
28) A convex lens of focal length 12 cm is made up of a glass of refractive index \[\frac{3}{2.}\]When it is immersed in a liquid of refractive index\[\frac{5}{4.}\] its focal length will be :

A)

15 cm

B)

6 cm

C)

30 cm

D)

24 cm

View Answer
29) When a \[p-n\] junction diode is connected to a battery with its p-side to positive terminal and n-side to negative terminal, the width of the depletion layer:

A)

decreases

B)

in creases

C)

first decreases then increases

D)

first increases then decreases

View Answer
30) Wave nature of light does not explain :

A)

Interference

B)

Total internal reflection

C)

Photo-electric effect

D)

Refraction

View Answer
31) A resistance of 8 ohm and an inductance of 6 ohm are connected in series to an A.C. circuit. The impedance of the circuit is ;

A)

\[14\sqrt{2}\Omega \]

B)

\[10\Omega \]

C)

\[2\Omega \]

D)

\[15\Omega \]

View Answer
32) A mixture of oxygen and hydrogen are filled in a vessel at a fixed temperature. The ratio of average kinetic energies of atoms of H2 and O2 is :

A)

1 : 16

B)

1 : 8

C)

1 : 12

D)

1 : 1

View Answer
33) In forward and reverse biasing of a \[p-n\] junction diode, the ratio of resistances is :

A)

102 : 1

B)

10-2:1

C)

1:104

D)

1: 10-4

View Answer
34) Lenz's law is based on the principle of conservation of :

A)

mass

B)

charge

C)

momentum

D)

energy

View Answer
35) An ice at -50°C is to be converted into vapour at 100°C. The heat required in this process is : (specific heat of ice = 0.5 calorie/gram 0C Latent heat of ice = 80 calorie/gram Latent    heat    of    vapour =540 calorie/gram)

A)

1028 ealorie

B)

624 calorie

C)

745 calorie

D)

810 calorie

View Answer
36) The speed of sound in a gas \[(\gamma -1.5)\] at 300 K is 340 m/s. The rms velocity of gas molecules will be

A)

340 m/s

B)

\[\frac{340}{\sqrt{2}}\]m/s

C)

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

D)

340\[\sqrt{15}\] m/s

View Answer
37) A battery of 12 volt is charged by a supply of 100 volt as shown in the figure. The charging current is 1.0A. Calculate the value of R :

A)

\[45\Omega \]

B)

\[105\,\Omega \]

C)

\[88\,\Omega \]

D)

\[95\,\Omega \]

View Answer
38) In a sample of radioactive substance, what percentage decays in one mean life time?

A)

69.3%

B)

63%

C)

50%

D)

36%

View Answer
39) At an instant a positive charge is moving parallel to a current carrying conductor. The path of the positive charge is :

A)

elliptical

B)

circle

C)

straight line

D)

parabola

View Answer
40) The momentum of two masses \[{{m}_{1}}\]and \[{{m}_{2}}\]are same. The ratio of their kinetic energies \[{{E}_{1}}\] and \[{{E}_{2}}\] is:

A)

\[\sqrt{{{m}_{1}}}:\sqrt{{{m}_{2}}}\]

B)

\[{{m}_{1}}:{{m}_{2}}\]

C)

\[{{m}_{2}}:{{m}_{1}}\]

D)

\[m_{1}^{2}:m_{2}^{2}\]

View Answer
41) A current of 0.1 ampere is flowing through a coil of 1000 turns and radius metre. 0.1 The magnetic field at the centre of the coil is :

A)

\[2\times {{10}^{-1}}T\]

B)

\[4.31\times {{10}^{-2}}T\]

C)

\[6.28\times {{10}^{-4}}T\]

D)

\[9.81\times {{10}^{-4}}T\]

View Answer
42) If 2 g mole of diatomic gas and 1 g mole of monoatomic gas are mixed together, then the ratio of specific heats of mixture is:

A)

1.24

B)

1.58

C)

1.46

D)

1.60

View Answer
43) A p-type semiconductor is formed by adding 1 indium atom in to a sample of silicon per \[5\times {{10}^{-7}}\] silicon atoms. If the density of atoms in the sample is \[5\times {{10}^{28}}\] atoms/metre3, the number of atoms accepted in per metre of silicon is :

A)

\[1.0\times {{10}^{13}}atoms/c{{m}^{3}}\]

B)

\[2.5\times {{10}^{20}}atoms/c{{m}^{3}}\]

C)

\[2.5\times 10atoms/c{{m}^{3}}\]

D)

\[1.0\times {{10}^{15}}atoms/c{{m}^{3}}\]

View Answer
44) At a certain place, magnitude of horizontal and vertical components of a magnetic field are same. The total intensity of magnetic field at that place will be :

A)

H

B)

H2

C)

2H

D)

\[\sqrt{2}H\]

View Answer
45) A coil having resistance of 50 ohm and an inductance of 10 ohm, is connected to a 100 volt battery. The energy stored in the coil is :

A)

10J

B)

20J

C)

30 J

D)

40 J

View Answer
46) The ratio of intensities of two waves is 1: 9.The waves interfere, what will be the ratio of maximum and minimum intensities?

A)

1 : 4

B)

4 : 1

C)

3 : 2

D)

2 : 3

View Answer
47) A capacitor when charged by a potential difference of 200 volt, stores a charge of 0.1 C. By discharging, energy liberated by the capacitor is :

A)

-30 J

B)

-15 J

C)

10 J

D)

20J

View Answer
48) A small current carrying loop acts as a small magnet. The area of the loop is A and magnetic moment is M. The current in the loop will be :

A)

\[\frac{A}{M}\]

B)

\[\frac{M}{A}\]

C)

\[MA\]

D)

\[{{A}^{2}}M\]

View Answer
49) The core used in transformer and other electromagnetic instruments is laminated, the reason is :

A)

to increase the electric field

B)

to increase the magnetic field

C)

(c) to reduce the loss of energy due to eddy currents

D)

to decrease the resistance

View Answer
50) The light of frequency v falls on a certain photoelectric   substance   of threshold frequency \[{{v}_{0}}.\] The work function of the substance is :

A)

\[h{{v}_{0}}\]

B)

\[hv\]

C)

\[\frac{h\gamma }{{{v}_{0}}}\]

D)

\[h(v-{{v}_{0}})\]

View Answer
51) The magnification of an astronomical telescope is 10 and the focal length of eye-piece is 20 cm. The focal length of objective lens is :

A)

\[\frac{1}{200}\] cm

B)

2 cm

C)

200 cm

D)

100 cm

View Answer
52) A car is moving with speed 30 m/s on a circular path of radius 500 m. If its speed is increasing at a rate of \[5m/{{s}^{2}},\] then resultant acceleration at that instant is :

A)

6.83 m/s2

B)

8 m/s2

C)

5.31 m/s2

D)

4 m/s2

View Answer
53) Apparent frequency of sound of engine is changing in the ratio 5/3 under the condition   that   engine   is   first approaching and then receding away from the observer. If velocity of sound is 340 m/s, then velocity of engine is :

A)

340 m/s

B)

170 m/s

C)

85 m/s

D)

310 m/s

View Answer
54) A diver, at a depth of 12 metre from the surface of the water, sees the sky with in a cone whose half vertex angle \[\left( _{a}{{\mu }_{\omega =}}\frac{4}{3} \right)\]is :

A)

\[\cos -\frac{4}{3}\]

B)

\[{{\sin }^{-1}}\frac{4}{3}\]

C)

\[{{90}^{0}}\]

D)

\[{{\sin }^{-1}}\frac{3}{4}\]

View Answer
55) In a galvanometer of 5 ohm resistance, a wire of 2 ohm resistance is used as a shunt. If the total current is 1 ampere, the fraction of current that will flow through the shunt is :

A)

1.2 A

B)

0.7A

C)

0.5 A

D)

0.3 A

View Answer
56) 1 newton/coulomb is equivalent to :

A)

1 C/V

B)

1 J

C)

1 V/M

D)

1 J/C

View Answer
57) An electron is moving with velocity \[\upsilon \] on a circular path of radius r in a transverse electric field B. The specific charge (elm) of the electron is:

A)

\[B\upsilon r\]

B)

\[\frac{\upsilon }{Br}\]

C)

\[B\upsilon {{r}^{2}}\]

D)

\[\frac{B}{r\upsilon }\]

View Answer
58) The false statement is :

A)

Every SHM is periodic in nature

B)

Every periodic motion is SHM

C)

In every SHM, total energy is proportional to the square of amplitude

D)

In SHM, acceleration of oscillating body is proportional to the displacement from the equilibrium position

View Answer
59) n balls each of mass m and velocity \[\upsilon \] collide with a wall, assume that the collisions are perfectly elastic. The a pressure exerted per second on the well is:

A)

3 \[mn\upsilon \]

B)

\[mn\upsilon \]

C)

\[2mn\upsilon \]

D)

none

View Answer
60) Number of extra electrons in a body of charge \[-\text{ }80\,\mu C,\] is :

A)

\[80\times {{10}^{15}}\]

B)

\[80\times {{10}^{-}}^{15}\]

C)

\[5\times {{10}^{14}}\]

D)

\[1.28\times {{10}^{-}}^{17}\]

View Answer
61) What is obtained, when propene is treated with N-bromo sucdnimide?

A)

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

B)

\[BrC{{H}_{2}}CH=C{{H}_{2}}\]

C)

\[BrC{{H}_{2}}CH=CHBr\]

D)

\[BrC{{H}_{2}}\underset{\begin{smallmatrix} | \\ Br \end{smallmatrix}}{\mathop{CH}}\,=CHBr\]

View Answer
62) Poisonous gas 'Lewisite' is obtained by the reaction of:

A)

\[CH\equiv CH\]and \[AsC{{l}_{3}}\]

B)

\[C{{H}_{2}}=C{{H}_{2}}\]and\[AsC{{l}_{3}}\]

C)

\[CH\equiv CH\] and\[{{S}_{2}}C{{l}_{2}}\]

D)

\[C{{H}_{2}}=C{{H}_{2}}\]and\[NOCl\]

View Answer
63) Phenol, in Liebermann's nitroso test, give the colour:

A)

red

B)

yellow

C)

blue

D)

pink

View Answer
64) What will be the main product, when benzene vapours are passed over\[{{V}_{2}}{{O}_{5}}\]at\[450{}^\circ C\]?

A)

\[\underset{CH.COOH}{\overset{CH.COOH}{\mathop{|\,|}}}\,\]

B)

C)

D)

View Answer
65) Which is the best reagent to distinguish between propene and propyne?

A)

ammonical\[AgN{{O}_{3}}\]

B)

\[\frac{B{{r}_{2}}}{CC{{l}_{4}}}\]

C)

alkaline\[KMn{{O}_{4}}\]

D)

aqueous\[B{{r}_{2}}\]

View Answer
66) The octane number of a sample of petrol is 40. It means that its knocking property is equal to the mixture of:

A)

40% n-heptane + 60% iso-octane

B)

40% petrol + 60% iso-octane

C)

60% n-heptane + 40% iso-octane

D)

60% petrol + 40% iso-octane

View Answer
67) What will be the product, when carboxy phenol, obtained by Reimer Tiemann's process, is deoxidised with Zn powder?

A)

B)

C)

D)

View Answer
68) What is the correct IUPAC name of:

A)

4-methoxy-2-nitrobenzaldehyde

B)

4-fonnyl-3-nitro anisole

C)

4-mefhoxy-6-nitrobenzaldehyde

D)

2-formyl-5-methoxy nitrobenzene

View Answer
69) The safest and the most common alternative of sugar is:

A)

glucose

B)

aspartame

C)

saccharin

D)

cyclodextrin

View Answer
70) The main component of marsh gas is:

A)

methane

B)

ethane

C)

butane

D)

isobutene

View Answer
71) The reaction, \[C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-OC{{H}_{3}}+{{C}_{2}}{{H}_{5}}OH\xrightarrow{{{H}^{+}}or\,O{{H}^{-}}}\] \[C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}+C{{H}_{3}}OH\]is called:

A)

Perkin's reaction

B)

Claisen Schmidt reaction

C)

Esterification

D)

Trans-esterification

View Answer
72) Which one of these elements is found in vitamin\[{{B}_{12}}\]?

A)

Mg

B)

Fe

C)

Zn

D)

Co

View Answer
73) The monomer of teflon polymer is:

A)

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

B)

\[C{{F}_{2}}=CC{{l}_{2}}\]

C)

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

D)

\[C{{F}_{2}}=CFCl\]

View Answer
74) The product obtained, heating ethanol with cone.\[{{H}_{2}}S{{O}_{4}}\]at\[165{}^\circ -170{}^\circ C,\]is:

A)

\[{{({{C}_{2}}{{H}_{5}})}_{2}}S{{O}_{4}}\]

B)

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

C)

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

D)

\[{{C}_{2}}{{H}_{5}}HS{{O}_{4}}\]

View Answer
75) The structural formula of picric acid is:

A)

B)

C)

D)

View Answer
76) The reaction,\[2C{{H}_{3}}-\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}\xrightarrow[{}]{{{C}_{2}}{{H}_{5}}ONa}\]\[C{{H}_{3}}-\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-\underset{\begin{smallmatrix} |\,| \\ O \end{smallmatrix}}{\mathop{C}}\,-O{{C}_{2}}{{H}_{5}}+{{C}_{2}}{{H}_{5}}OH\]is called:

A)

Etard reaction

B)

Perkin's reaction

C)

Claisen condensation

D)

Claisen Schmidt reaction

View Answer
77) Formaldehyde reacts with ammonia to give urotropine. The formula of urotropine is:

A)

\[{{(C{{H}_{2}})}_{6}}{{N}_{4}}\]

B)

\[{{(C{{H}_{2}})}_{4}}{{N}_{3}}\]

C)

\[{{(C{{H}_{2}})}_{6}}{{N}_{6}}\]

D)

\[{{(CH{{ }_{3}})}_{3}}{{N}_{3}}\]

View Answer
78) Phenol reacts with aqueous bromine to give:

A)

B)

C)

D)

View Answer
79) Which equation is correct for first order reactions?

A)

\[{{t}_{1/2}}\propto {{C}^{-1}}\]

B)

\[{{t}_{1/2}}\propto C\]

C)

\[{{t}_{1/2}}\propto {{C}^{0}}\]

D)

\[{{t}_{1/2}}\propto {{C}^{1/2}}\]

View Answer
80) How many neutrons are there in nucleus 'X', if it gives\[_{7}{{N}^{14}}\]after two successive \[\beta -\]particle emissions?

A)

7

B)

10

C)

14

D)

9

View Answer
81) 87.5% decomposition of a radioactive substance complete in 3 hours. What is the half-life of that substance?

A)

2 hours

B)

3 hours

C)

90 minutes

D)

1 hours

View Answer
82) 2.0 molar solution is obtained, when 0.5 mole solute is dissolved in:

A)

250 ml solvent

B)

250 g solvent

C)

250 ml solution

D)

1000 ml solvent

View Answer
83) The energy equivalent to 1 amu., is:

A)

931.1 MeV

B)

\[1.492\times {{10}^{13}}erg\]

C)

1000 J

D)

107 erg

View Answer
84) The specific rotation of equilibrium mixture of \[\alpha -\]D-glucose and\[\beta -\] D-glucose, is:

A)

\[+19{}^\circ \]

B)

\[+112{}^\circ \]

C)

\[+52{}^\circ \]

D)

\[+100{}^\circ \]

View Answer
85) The ratio of\[F{{e}_{2}}{{O}_{3}}\]and Al, in thermite is:

A)

1 : 3

B)

1 : 2

C)

3 : 1

D)

none of these

View Answer
86) The structural formula of an amino acid, isoleucine is:

A)

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

B)

C)

D)

View Answer
87) Which particle can be used to change\[_{13}A{{l}^{27}}\]into is\[_{15}{{P}^{30}}\]?

A)

Neutron

B)

\[\alpha -\]particle

C)

Proton

D)

Deuteron

View Answer
88) Which of the following reaction is catalysed by enzyme maltase?

A)

\[starch\xrightarrow{{}}maltose\]

B)

\[maltose\xrightarrow{{}}glucose\]

C)

\[lactose\xrightarrow[{}]{{}}maltose\]

D)

\[maltose\xrightarrow{{}}glucose+fructose\]

View Answer
89) If equilibrium constant for reaction\[2AB~{{A}_{2}}+{{B}_{2}},\]is 49, then the equilibrium constant   for   reaction\[AB\frac{1}{2}{{A}_{2}}+\frac{1}{2}{{B}_{2}},\]will be;

A)

7

B)

280

C)

49

D)

0.01

View Answer
90) The components of Zeigler Natta catalyst, used in the polymerisation of propylene, are:

A)

\[TiC{{l}_{3}}+Al{{({{C}_{2}}{{H}_{5}})}_{3}}\]

B)

\[TiC{{l}_{4}}+Al{{({{C}_{2}}{{H}_{5}})}_{3}}\]

C)

\[Ti{{({{C}_{2}}{{H}_{5}})}_{3}}+AlC{{l}_{3}}\]

D)

\[Ti{{({{C}_{2}}{{H}_{5}})}_{4}}+AlC{{l}_{3}}\]

View Answer
91) What will be the normality of a solution, containing 4.9 g.\[{{H}_{3}}P{{O}_{4}}\]dissolved in 500 ml water?

A)

0.3

B)

1.0

C)

3.0

D)

0.1

View Answer
92) The cyanohydrin of which compound, gives lactic acid on hydrolysis?

A)

\[HCHO\]

B)

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

C)

\[{{C}_{6}}{{H}_{5}}CHO\]

D)

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

View Answer
93) The solution obtained by adding water to alcohol, shows:

A)

+ve deviation from Raoult's law

B)

ideal behavior

C)

-ve deviation from Raoult's law

D)

application of Henry's law

View Answer
94) Hinsberg's reagent is ;

A)

B)

C)

D)

View Answer
95) According to Bohr, the angular momentum of an electron, in any orbit, should be:

A)

\[h/2\pi \]

B)

\[nh/2\pi \]

C)

\[h/m\upsilon \]

D)

\[2\pi /nh\]

View Answer
96) \[C{{H}_{3}}-C{{H}_{2}}-Cl\xrightarrow{ale.\text{ }KOH}A,\]the product is:

A)

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

B)

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

C)

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

D)

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

View Answer
97) According to Hess's law, the heat of reaction depends upon:

A)

initial condition of reactants

B)

initial and final conditions of reactants

C)

intermediate path of the reaction

D)

end conditions of reactants

View Answer
98) Which of the following reaction is a redox reaction?

A)

\[{{P}_{2}}{{O}_{5}}+2{{H}_{2}}O\xrightarrow{{}}{{H}_{4}}{{P}_{2}}{{O}_{7}}\]

B)

\[2AgN{{O}_{3}}+BaC{{l}_{2}}\to 2AgCl+Ba{{(N{{O}_{3}})}_{2}}\]

C)

\[BaC{{l}_{2}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}BaS{{O}_{4}}+2HCl\]

D)

\[Cu+2AgN{{O}_{3}}\xrightarrow{{}}2Ag+Cu{{(N{{O}_{3}})}_{2}}\]

View Answer
99) pH of a solution of 10 mL 1N sodium acetate and 50 mL 2N acetic acid\[({{K}_{a}}=1.8\times {{10}^{-5}}),\]is approximately:

A)

4

B)

5

C)

6

D)

7

View Answer
100) What is 'A' in the following reaction? \[2F{{e}^{3+}}(aq)+S{{n}^{2+}}(aq)\xrightarrow{{}}2F{{e}^{2+}}(aq)+A\]

A)

\[S{{n}^{3+}}(aq)\]

B)

\[S{{n}^{4}}+(aq)\]

C)

\[S{{n}^{2+}}(aq)\]

D)

\[Sn\]

View Answer
101) The pH is less than 7, of the solution of:

A)

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

B)

\[NaCN\]

C)

\[NaOH\]

D)

\[NaCl\]

View Answer
102) A reaction is catalysed by 'X'. Here 'X' :

A)

decreases the rate constant of reaction

B)

does not affect the equilibrium constant of reaction

C)

decreases the enthalpy of reaction

D)

decreases the activation energy

View Answer
103) For a reaction,\[A+B\xrightarrow{{}}\]product, it was found that rate of reaction increases four times if concentration of 'A' is doubled, but the rate of reaction remains unaffected if concentration of 'B' is doubled. Hence, the rate law for reaction is:

A)

\[rate=k[A][B]\]

B)

\[rate=k{{[A]}^{2}}\]

C)

\[rate=k{{[A]}^{2}}{{[B]}^{1}}\]

D)

\[rate=k{{[A]}^{2}}{{[B]}^{2}}\]

View Answer
104) The following four solutions are kept in separate beakers and copper metal is put in each of them. Which solution will become blue after some time?

A)

\[AgN{{O}_{3}}\]solution

B)

\[Zn{{(N{{O}_{3}})}_{2}}\]solution

C)

\[Ba{{(N{{O}_{3}})}_{2}}\]solution

D)

\[NaN{{O}_{3}}\]solution

View Answer
105) The\[E{}^\circ \]for half cells\[Fe/F{{e}^{2+}}\]and\[Cu/C{{u}^{2+}}\] are\[-0.44\text{ }V\]and\[+0.32\text{ }V\]respectively. Then:

A)

\[C{{u}^{2+}}\]oxidises\[Fe\]

B)

\[C{{u}^{2+}}\]oxidises \[F{{e}^{2+}}\]

C)

\[Cu\]oxidises\[F{{e}^{2+}}\]

D)

\[Cu\]reduces\[F{{e}^{2+}}\]

View Answer
106) The values of\[{{K}_{sp}}\]for\[CuS,A{{g}_{2}}S\]and\[HgS\]are \[{{10}^{-31}},~{{10}^{42}}\]and\[{{10}^{-54}}\]respectively. The correct order of their solubility in water is:

A)

\[A{{g}_{2}}S>HgS>CuS\]

B)

\[HgS>CuS>A{{g}_{2}}S\]

C)

\[HgS>A{{g}_{2}}S>CuS\]

D)

\[A{{g}_{2}}S>CuS>HgS\]

View Answer
107) Phenolphthalein is not suitable for the titration of:

A)

\[NaOH\]vs \[{{(COOH)}_{2}}\]

B)

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

C)

\[{{K}_{2}}C{{O}_{3}}\]vs\[HCl\]

D)

none of the above

View Answer
108) For a gaseous reaction,\[{{C}_{2}}{{H}_{4}}+{{H}_{2}}{{C}_{6}}{{H}_{6}};\] \[\Delta H=-32.7\text{ }kcal.\] The concentration of\[{{C}_{2}}{{H}_{4}}\]can be decreased by:

A)

increasing pressure

B)

increasing amount of\[{{H}_{2}}\]

C)

decreasing temperature

D)

all of these

View Answer
109) \[PC{{l}_{5}}\]was heated in a\[10\text{ }d{{m}^{3}}\]container at \[250{}^\circ C\]\[PC{{l}_{5}}(g)PC{{l}_{3}}(g)+C{{l}_{2}}(g)\]0.1 mol\[PC{{l}_{5}}\] and 0.2 mol\[C{{l}_{2}}\]was found at equilibrium. The equilibrium constant for the reaction is:

A)

0.025

B)

0.04

C)

0.02

D)

0.05

View Answer
110) In the reaction, \[{{H}_{2}}S{{O}_{4}}+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+HSO_{4}^{-},\] the conjugate acid of water is:

A)

\[{{H}_{3}}{{O}^{+}}\]

B)

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

C)

\[HSO_{4}^{-}\]

D)

\[SO_{4}^{2-}\]

View Answer
111) The iron, obtained from blast furnace is:

A)

pig iron

B)

cast iron

C)

wrought iron

D)

steel

View Answer
112) The molecular formula of 'salt petre' is:

A)

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

B)

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

C)

\[NaCl\]

D)

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

View Answer
113) Transition metals are related to which block?

A)

's' block

B)

'p' block

C)

'd' block

D)

none of these

View Answer
114) 36 g water and 828 g ethyl alcohol form an ideal solution. The mole fraction of water in it, is:

A)

1.0

B)

0.7

C)

0.4

D)

0.1

View Answer
115) The general electronic configuration of transition elements, is:

A)

\[(n-1){{d}^{1-5}}n{{s}^{0}}\]

B)

\[(n-1){{d}^{1-10}}n{{s}^{1}}\]

C)

\[(n-1){{d}^{1-10}}n{{s}^{2}}\]

D)

\[(n-1){{d}^{1-10}}n{{s}^{1-2}}\]

View Answer
116) Which one of these, is not a colligative property?

A)

vapour pressure

B)

osmotic pressure

C)

lowering in freezing point

D)

Elevation in boiling point

View Answer
117) Which of the following element does not show variable valency?

A)

Ni

B)

Zn

C)

Cu

D)

Mn

View Answer
118) Hydrogen in respect to chlorine, is:

A)

electropositive

B)

electronegative

C)

neutral

D)

none of the above

View Answer
119) The osmotic pressure of which solution is maximum? (consider that decimormal solution of each is 90% dissociated):

A)

Aluminium sulphate

B)

Barium chloride

C)

Sodium sulphate

D)

A mixture of equal volumes of and

View Answer
120) Which of the following elements, is most electronegative?

A)

F

B)

O

C)

Ne

D)

Na

View Answer
121) All worms are :

A)

triploblastic

B)

segmented

C)

endo-parasites

D)

free - living

View Answer
122) In humans schizont stage of Plasmodium is found in side:

A)

liver cells only

B)

liver, spleen and blood cells

C)

RBCs and liver cells

D)

RBCs only

View Answer
123) Pearl oyster is a mollusc which belongs to class :

A)

Cephalopoda

B)

Pelecypoda

C)

Scaphopoda

D)

Gastropoda

View Answer
124) In honey bee royal jelly is secreted from :

A)

corp gland

B)

wax gland

C)

pharyngeal gland

D)

salivary gland

View Answer
125) Which of the following is a coelenlerate?

A)

Sea lily

B)

Sea squirt

C)

Sea cucumber

D)

Sea fan

View Answer
126) Which of the following is correct pair of disease and its causing agent?

A)

Soft - sour - Bacillus breueis

B)

Gonorrhoea - Entamoeba

C)

Syphilis - Troponema pallidum

D)

Urethritis - Bacillus anthracis

View Answer
127) Lac is obtained from :

A)

Laccifer

B)

Bombyx

C)

Dactylopius

D)

Lytta

View Answer
128) As per classification which of the following is correct?

A)

Ascaris, Pherctima, Grasshopper

B)

Hydra, Pterido, Leucosotenia

C)

Starfish, Grasshopper, Solen

D)

Pila, Dentalium, Octopus

View Answer
129) As insecticides reach at higher trophic level in food chain their concentration :

A)

increases

B)

become irregular

C)

remain constant

D)

decreases

View Answer
130) Kaziranga National Park is famous for :

A)

Rhinoceros

B)

Tiger

C)

Asiatic lion

D)

Nilgai

View Answer
131) Which of the following cells arc associated with immune system of body?

A)

Neutrophils

B)

Macrophages

C)

Lymphocytes

D)

All of these

View Answer
132) Kala-azar disease is transmitted by :

A)

Tabinus

B)

Solomax

C)

Glossina

D)

Phlebotomus

View Answer
133) To obtain aminoacids and other organic compounds, Stanley Miller and Urey used in his experiment :

A)

mixture of \[{{O}_{2}},{{N}_{2}},C{{H}_{4}}\]and\[{{H}_{2}}O\]

B)

mixture of \[N{{H}_{3}},{{H}_{2}},{{N}_{2}}\]and \[{{H}_{2}}O\]

C)

mixture of \[{{H}_{2}},N{{H}_{3}},C{{H}_{4}},\] and \[{{H}_{2}}O\]

D)

mixture of \[{{H}_{2}},{{O}_{2}},C{{O}_{2}}\]and \[{{H}_{2}}O\]

View Answer
134) Commercial silk is obtained from :

A)

cocoon/pupa

B)

caterpillar

C)

adult moth

D)

both egg and adult moth

View Answer
135) Interbreeding population of animals is called :

A)

sub-species

B)

species

C)

community

D)

genus

View Answer
136) Which of the following is a living fossil?

A)

Latimeria

B)

Amia

C)

Hippocampus

D)

Exocoetus

View Answer
137) Continuous bleeding from an injured part of body is due to deficiency of :

A)

vitamin A

B)

vitamin B

C)

vitamin K

D)

vitamin E

View Answer
138) In which of the following class of Annelida, one pair ovaries and several pair testes are found ?

A)

Archiannelida

B)

Hirudinea

C)

Oligochaeta

D)

Polychaeta

View Answer
139) Sex determination in humans takes place by:

A)

sex chromosomes of father

B)

measurement of sperm

C)

measurement of ovum

D)

sex chromosomes of mother

View Answer
140) The term genetic engineering is used for:

A)

blotting technique

B)

RNA reaction technique

C)

protien synthesis technique

D)

recombinant DNA technique

View Answer
141) Turner's syndrome chromosome pattern is:

A)

XO

B)

XXX

C)

XYY

D)

XXY

View Answer
142) The main cause of Edward syndrome Patau syndrome and Down syndrome is:

A)

mutation of gene

B)

change in both autosomes and heterosomes

C)

change in autosomes

D)

change in heterosomes

View Answer
143) The number of chromosomes in Klinefelter's syndrome are:

A)

47

B)

46

C)

45

D)

44

View Answer
144) The eggs of eutherian mammals are :

A)

mesolecithal type

B)

microlecithal type

C)

telolecithal type

D)

megalecithal type

View Answer
145) Which of the following steroid se hormone influenced secondary se organs ?

A)

Progesterone

B)

Oestrogen

C)

LH

D)

LTH

View Answer
146) The genotype of a man having female sexual characters will be :

A)

XXY

B)

XYY

C)

XO

D)

XXX

View Answer
147) The universal recipient blood group is :

A)

O (+ ve)

B)

AB ((+ve)

C)

O (-ve)

D)

AB (-ve)

View Answer
148) Which of the following is a X-Iinked disease?

A)

Tetany

B)

Colorblindness

C)

Xeroderma

D)

Hypertricosis

View Answer
149) The condition in which there are more than two complete set of chromosome is called :

A)

polytene

B)

monoploidy

C)

polyploidy

D)

aneuploidy

View Answer
150) In human the inheritance of sex linkage takes place through :

A)

autosomes

B)

Y - chromosome

C)

X - chromosome

D)

both 'b' and 'c'

View Answer
151) Hybridoma technology is used to :

A)

kill the cancer cells

B)

formation of somaclonal antibodies

C)

formation of somatic hybrids

D)

formation of antibiotics

View Answer
152) Hydrophytes are characterised by :

A)

thick and large leaf

B)

delicate and mucilagenous stem

C)

short spinous stem

D)

all of the above

View Answer
153) Yeast is used in the production of :

A)

acetic acid

B)

citric acid

C)

ethyl alcohol

D)

curd

View Answer
154) The vaccine of Hepatitis-B is a :

A)

first generation vaccine

B)

interferon

C)

second generation vaccine

D)

third generation vaccine

View Answer
155) The term 'ecosystem' was coined by :

A)

E.P. Odum

B)

A.G. Tansley

C)

Carl Mobious

D)

W. Clementus

View Answer
156) Streptomycin was isolated first time by :

A)

Hemming

B)

Robert Koch

C)

N. Borlaug

D)

S. Waksman

View Answer
157) Which of the following micro-organism is used for conversion of milk into curd ?

A)

Xanthomonas citri

B)

Bacillus megatherium

C)

Acefobacter aceti

D)

None of the above

View Answer
158) Cotton belongs to family :

A)

Solanaceae

B)

Cucurbitaceae

C)

Leguminoseae

D)

Malvaceae

View Answer
159) Terpentine is obtained from :

A)

flowers of angiosperms

B)

wood of gymnosperms

C)

pteridophytes

D)

bacteria

View Answer
160) Kohler and Milstein developed biotechnology for :

A)

monoclonal antibodies

B)

steroid synthesis

C)

immobilization of enzymes

D)

myeloma

View Answer
161) Which of the following is formed by the reactions of UV-rays of sunlight?

A)

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

B)

CO

C)

Ozone

D)

Florides

View Answer
162) In India highest amount of coal is present in :

A)

West Bengal

B)

Maharastra

C)

Jharkhand

D)

Assam,

View Answer
163) Genetically engineered human insulin is called :

A)

humulin

B)

haematin

C)

hybridoma

D)

hybrid

View Answer
164) The food chain starts from :

A)

consumer

B)

producer

C)

decomposer

D)

nitrogen fixation

View Answer
165) Humulin is a :

A)

form of chitin

B)

human insulin

C)

digestive enzyme

D)

antibiotics

View Answer
166) The substrate for photorespiration is :

A)

glycolate

B)

acetyl Co-A

C)

pyruvic acid

D)

glucose

View Answer
167) Pinus seed is originated in :

A)

capsule

B)

microsporophyll

C)

microsporangia

D)

megasporophyll

View Answer
168) The endosperm of Pinus is :

A)

haploid

B)

diploid

C)

triploid

D)

polyploidy

View Answer
169) Which of the following is the product of glucose fermentation by yeast?

A)

\[{{C}_{6}}{{H}_{12}}{{O}_{6}}\]

B)

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

C)

\[({{C}_{6}}{{H}_{10}}{{O}_{5}})\]

D)

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

View Answer
170) From which part of Cocos nucifera, coir is obtained :

A)

Endocarp

B)

Mesocarp

C)

Epicarp

D)

Any part of fruit

View Answer
171) The formation of embryo without fusion of gametes is termed as :

A)

apospory

B)

isogamy

C)

apogamy

D)

syngamy

View Answer
172) The pesticide used as preventive measure in buildings is :

A)

aldrin

B)

dieldrin

C)

endrin

D)

DDT

View Answer
173) Which of the following is not a pollutant?

A)

Hydrogen

B)

Carbon dioxide

C)

Sulphur dioxide

D)

Carbon monoxide

View Answer
174) Main air pollutant is :

A)

\[CO\]

B)

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

C)

\[S\]

D)

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

View Answer
175) Cheese and yogurt are the products of:

A)

dehydration

B)

fermentation

C)

pasteurization

D)

distillation

View Answer
176) Which of the following maintain the constant number of chromosomes generation after generation?

A)

Meiosis

B)

Endomitosis

C)

Mitosis

D)

Amitosis

View Answer
177) Plant cell is differ from animal cell because of:

A)

the presence of cell wall and absence of chlorophyll in plant cell

B)

the presence of cell wall and chlorophyll in plant cell

C)

the absence of cell wall and presence of chloroplast in animal cell

D)

the absence of cell wall and presence of chlorophyll in plant cell

View Answer
178) DNA remains absent in :

A)

chloroplast

B)

nucleus

C)

peroxysomes

D)

chromosome

View Answer
179) Photosynthetic unit is :

A)

glyoxysome

B)

spherosome

C)

microsome

D)

quantasome

View Answer
180) The ?power house' of cell is :

A)

nucleus

B)

golgi body

C)

mitochondria

D)

chloroplast

View Answer