Solved papers for NEET AIPMT SOLVED PAPER SCREENING 2009

AIPMT SOLVED PAPER SCREENING 2009 Total Questions - 200

1) An explosion blows a rock into three parts. Two parts go off at right angles to each other. These two are, 1 kg first part moving with a velocity of 12\[=\frac{\sigma }{{{\varepsilon }_{0}}}\left( \frac{{{a}^{2}}}{c}-b+c \right)\frac{\sigma }{{{\varepsilon }_{0}}}(2a)\,(\because c=a+b)\]and 2 kg second part moving with a velocity of 8 \[{{V}_{C}}=\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{\sigma 4\pi {{a}^{2}}}{c}-\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{\sigma 4\pi {{b}^{2}}}{c}\]. If the third part flies off with a velocity of 4 \[+\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{\sigma 4\pi {{c}^{2}}}{c}\], its mass would be

A)

5kg

B)

7kg

C)

17kg

D)

3kg

View Answer
2) A conducting circular loop is placed in a uniform magnetic field 0.04 T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 \[=\frac{\sigma }{{{\varepsilon }_{0}}}\left( \frac{{{a}^{2}}}{c}-\frac{{{b}^{2}}}{c}+c \right)=\frac{\sigma }{{{\varepsilon }_{0}}}(2a)\,(\because c=a+b)\]. The induced emf in the loop when the radius is 2 cm is

A)

\[{{V}_{A}}={{V}_{C}}\ne {{V}_{B}}\]

B)

\[\therefore \]

C)

\[{{v}_{S}}=v+{{v}_{B}}\]

D)

\[=\frac{1000}{100}=10\,\text{m}{{\text{s}}^{-1}}\]

View Answer
3) If the dimensions of a physical quantity are given by \[{{v}_{s}}=10+10=20m{{s}^{-}}^{1}\]then the physical quantity will be

A)

pressure if\[T=\frac{2\pi r}{v}=\frac{2\pi }{v}\times \frac{mv}{Bq}\]

B)

velocity if \[T=\frac{2\pi m}{Bq}\]

C)

acceleration if \[v=128\,\text{m}{{\text{s}}^{-1}}\]

D)

force if \[5\lambda =4\]

View Answer
4) In the nuclear decay given below\[k=\frac{2\pi }{\lambda }=\frac{2\pi \times 5}{4}=7.85\]the particles emitted in the sequence are

A)

\[v=\frac{\omega }{k}=128\,\text{m}{{\text{s}}^{-1}}\]

B)

\[\Rightarrow \]

C)

\[\omega =v\times k=128\times 7.85\]

D)

\[y=A\sin (kx-\omega t)\]

View Answer
5) Three concentric spherical shells have radii a, b and c( a < b < c) and have surface charge densities   \[\therefore \]and \[y=2\sin (7.85\times -1005t)\] respectively.   If \[=(0.02)m\sin (7.85x-1005t)\] and \[v=\frac{dy}{dt}=A\omega \cos \omega t=A\omega \sqrt{1-{{\sin }^{2}}\omega t}\]denote the potentials of the three shells, then for c = a + b, we have

A)

\[=\omega \sqrt{{{A}^{2}}-{{y}^{2}}}\]

B)

       \[y=\frac{a}{2}\]

C)

\[\therefore \]

D)

\[v=\omega \sqrt{{{a}^{2}}-\frac{{{a}^{2}}}{4}}=\omega \sqrt{\frac{3{{a}^{2}}}{4}}=\frac{2\pi }{T}\frac{a\sqrt{3}}{2}=\frac{\pi a\sqrt{3}}{T}\]

View Answer
6) A bus is moving with a speed of 10 \[E=hv=h\frac{c}{\lambda }\] on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus ?

A)

\[\Rightarrow \]

B)

\[\lambda =\frac{hc}{E}\]

C)

\[\lambda =\frac{6.6\times {{10}^{-34}}\times 3\times {{10}^{8}}}{2.5\times 1.6\times {{10}^{-19}}}=5000{AA}\]

D)

\[4000{AA}<5000{AA}\]

View Answer
7) Under the influence of a uniform magnetic field, a charged particle moves with constant speed v in a circle of radius R. The time period of rotation of the particle

A)

depends on v arid not on R

B)

depends on R and not on v

C)

is independent of both v and R

D)

depends on both v and R

View Answer
8) A wave in a string has an amplitude of 2 cm. The wave travels in the +ve direction of x axis with a speed of 128 \[=\frac{1}{2}m{{v}^{2}}-mgh\] and it is noted that 5 complete waves fit in 4 m length of the string. The equation describing the wave is

A)

\[=\frac{1}{2}\times 1\times 400-1\times 10\times 10\]

B)

\[=200-180=20\,\text{J}\]

C)

\[\overrightarrow{r}\]

D)

\[\overrightarrow{F}.\]

View Answer
9) A simple pendulum performs simple harmonic motion about x = 0 with an amplitude \[a\] and time period T. The speed of the pendulum at \[\overrightarrow{\tau }=\overrightarrow{r}\times \overrightarrow{F}\]will be

A)

\[\overrightarrow{r}\]

B)

\[\overrightarrow{F}\]

C)

\[\therefore \]

D)

\[\overrightarrow{\tau }.\overrightarrow{r}=0\]

View Answer
10) A p-n photodiode is fabricated from .a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength

A)

\[6000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

4000 nm

C)

6000 nm

D)

\[4000\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
11) A body of mass 1 kg is thrown upwards with a velocity 20 \[\overrightarrow{F}.\overrightarrow{\tau }=0\]. It momentarily comes to rest after attaining a height of 18 m. How much energy is lost due to air friction? \[\text{m}{{\text{s}}^{-1}}\]

A)

20 J

B)

30 J

C)

40 J

D)

10 J

View Answer
12) The symbolic representation of four logic gates (i)                                            (ii)            (iii)                                          (iv)            The logic symbols for OR, NOT and NAND gates are respectively

A)

(iii), (iv), (ii)

B)

(iv), (i), (iii)

C)

(iv), (ii), (i)

D)

(i), (iii), (iv)

View Answer
13) If\[\text{m}{{\text{s}}^{-1}}\] is the force acting on a particle having position vector \[\text{m}{{\text{s}}^{-1}}\] and \[\text{mm}{{\text{s}}^{-1}}\] be the torque of this force about the origin, then

A)

\[3.2\pi \mu V\]and\[4.8\pi \mu V\]

B)

\[0.8\pi \mu V\]and\[1.6\pi \mu V\]

C)

\[{{M}^{a}}{{L}^{b}}{{T}^{c}},\]and\[a=1,b=-1,c=-2\]

D)

\[a=1,b=0,c=-1\]and\[a=1,b=1,c=-2\]

View Answer
14) If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is

A)

repelled by both the poles

B)

repelled by the north pole and attracted by the south pole

C)

attracted by the north pole and repelled by the south pole

D)

attracted by both the poles

View Answer
15) The mass of a lift is 2000 kg. When the tension in the supporting cable is 28000 N, then its acceleration is

A)

\[a=0,b=-1,c=-2\] downwards

B)

\[_{Z}^{A}Z\xrightarrow[{}]{{}}{{\,}_{Z+}}_{1}^{4}Y\xrightarrow[{}]{{}}\,_{Z-1}^{A-4}{{B}^{*}}\xrightarrow[{}]{{}}\,_{Z-1}^{A-4}B,\] upwards

C)

\[\beta ,\alpha ,\gamma \] downwards

D)

\[\gamma ,\beta ,\alpha \] upwards

View Answer
16) The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an

A)

isobar of parent

B)

isomer of parent

C)

isotone of parent

D)

isotope of parent

View Answer
17) A rectangular, a square, a circular and an elliptical loop, all in the (x-y) plane, are moving out of a uniform magnetic field with a constant velocity, \[\beta ,\gamma ,\alpha \]The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops, out of the field region, will not remain constant for

A)

the rectangular, circular and elliptical loops

B)

the circular and the elliptical loops

C)

only the elliptical loop

D)

any of the four loops

View Answer
18) A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 s is \[\alpha ,\beta ,\gamma \] and that covered in the first 20 s is\[\sigma ,-\sigma \], then

A)

\[\sigma \]

B)

       \[{{V}_{A}},{{V}_{B}}\]

C)

\[{{V}_{C}}\]

D)

       \[{{V}_{C}}={{V}_{A}}\ne {{V}_{B}}\]

View Answer
19) A wire of resistance \[{{V}_{C}}={{V}_{B}}\ne {{V}_{A}}\] is bent to form a complete circle of radius 10 cm. The resistance between its two diametrically opposite points, A and B as shown in the figure, is

A)

\[{{V}_{C}}\ne {{V}_{B}}\ne {{V}_{A}}\]

B)

\[{{V}_{C}}={{V}_{B}}={{V}_{A}}\]

C)

\[\text{m}{{\text{s}}^{-1}}\]

D)

       \[\text{20m}{{\text{s}}^{-1}}\]

View Answer
20) The electric field part of an electromagnetic wave in a medium is represented by \[\text{40m}{{\text{s}}^{-1}}\] \[\text{25m}{{\text{s}}^{-1}}\] \[\text{10m}{{\text{s}}^{-1}}\]\[\text{m}{{\text{s}}^{-1}}\] The wave is

A)

moving along y direction with frequency \[2\pi \times \,{{10}^{6}}Hz\] and wavelength 200 m.

B)

moving along x direction with frequency 106 Hz and wavelength 100 m

C)

moving along x direction with frequency \[{{10}^{6}}Hz\] and wavelength 200 m

D)

moving along - x direction with frequency \[{{10}^{6}}Hz\] and wavelength 200 m

View Answer
21) A thin circular ring of mass M and radius R is rotating in a horizontal plane about an axis vertical to its plane with a constant angular velocity \[\omega \]. If two objects each of mass m be attached gently to the opposite ends of a diameter of the ring, the ring will then rotate with an angular velocity

A)

\[y=(0.02)m\sin (15.7x-2010t)\]

B)

       \[y=(0.02)m\sin (15.7x+2010t)\]

C)

       \[y=(0.02)m\sin (7.85x+1005t)\]

D)

       \[x=\frac{a}{2}\]

View Answer
22) A transistor is operated in common-emitter configuration at \[\frac{\pi a\sqrt{3}}{2T}\] volt such that a change in the base current from 100 \[\frac{\pi a}{T}\] to 200 \[\frac{3{{\pi }^{2}}a}{T}\]produces a change in the collector current from 5 mA to 10 mA. The current gain is

A)

75

B)

                                       100

C)

       150

D)

       50

View Answer
23) A black body at 227°C radiates heat at the rate of 7 cal \[\frac{\pi a\sqrt{3}}{T}\]. At a temperature of 727°C, the rate of heat radiated in the same units will be

A)

60

B)

       50

C)

       112

D)

       80

View Answer
24) A student measures the terminal potential difference (V) of a cell (of emf s and internal resistance r) as a function of the current (I) flowing through it. The slope and intercept of the graph between V and I, then respectively, equal

A)

\[m{{s}^{-1}}\] and - r

B)

       - r and \[(g=10m{{s}^{-2}})\]

C)

                       r and -\[\vec{F}\]

D)

       -\[\overrightarrow{r}\] and r

View Answer
25) Two bodies of mass 1 kg and 3 kg have position vectors \[\overrightarrow{\tau }\]and \[\overrightarrow{r}.\overrightarrow{\tau }\ne 0\]respectively. The centre of mass of this system has a position vector

A)

\[\overrightarrow{F}.\overrightarrow{\tau }=0\]

B)

       \[\overrightarrow{r}.\overrightarrow{\tau }>0\]

C)

       \[\overrightarrow{F}.\overrightarrow{\tau }<0\]

D)

       \[-\hat{i}+\hat{j}+\hat{k}\]

View Answer
26) The internal energy change in a system that has absorbed 2 kcal of heat and done 500 J of work is

A)

8900 J

B)

                                       6400 J

C)

       5400 J

D)

       7900 J

View Answer
27) An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water?

A)

\[\overrightarrow{r}.\overrightarrow{\tau }=0\]

B)

       \[\overrightarrow{F}.\overrightarrow{\tau }=0\]

C)

       \[\overrightarrow{r}.\overrightarrow{\tau }=0\]

D)

       \[\overrightarrow{F}.\overrightarrow{\tau }\ne 0\]

View Answer
28) The driver of a car travelling with speed \[30m{{s}^{-2}}\] towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is \[4m{{s}^{-2}}\]tile-frequency of reflected sound as heard by driver is

A)

550 Hz

B)

555.5 Hz

C)

       720 Hz

D)

       500 Hz

View Answer
29) In a Rutherford scattering experiment when a projectile of charge\[4m{{s}^{-2}}\]and mass\[14m{{s}^{-2}}\] approaches a target nucleus of charge \[\overrightarrow{v}=v\hat{i}.\] and mass \[{{s}_{1}}\]the distance of closest approach is \[{{s}_{2}}\]. The energy of the projectile is

A)

directly proportional to\[{{s}_{2}}=2{{s}_{1}}\]

B)

directly proportional to \[{{s}_{2}}=3{{s}_{1}}\]

C)

inversely proportional to \[{{s}_{2}}=4{{s}_{1}}\]

D)

directly proportional to mass \[{{s}_{2}}={{s}_{1}}\]

View Answer
30) Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The [Capacitance and breakdown voltage of the combination will be

A)

\[12\Omega {{m}^{-1}}\]

B)

       \[0.6\pi \,\Omega \]

C)

                       \[\frac{C}{3},\,3V\]

D)

       \[6\pi \,\Omega \]

View Answer
31) The magnetic force acting on a charged particle of charge \[6\,\Omega \]in a magnetic field of 2T acting in y direction, when the particle velocity is \[{{E}_{x}}=0;\] is

A)

8 N in - z direction

B)

4 N in z direction

C)

8 N in y direction

D)

8 N in z direction

View Answer
32) Which one of the following equations of motion represents simple harmonic motion ?

A)

Acceleration\[{{E}_{y}}=2.5\frac{N}{C}\cos \left[ \left( 2\pi \times {{10}^{6}}\frac{rad}{m} \right)t \right.\]

B)

Acceleration\[\left. -\left( \pi \times {{10}^{-2}}\frac{rad}{s} \right)x \right]\]

C)

Acceleration \[{{E}_{s}}=0.\]

D)

Acceleration = kx where \[2\pi x{{10}^{6}}Hz\]and a are all positive.

View Answer
33) Monochromatic light of wavelength 667 nm is produced by a helium neon laser. The power emitted is 9 mW. The number of photons arriving per second on the average at a target irradiated by this beam is

A)

\[\frac{\omega (M-2m)}{M+2m}\]

B)

       \[\frac{\omega M}{M+2m}\]

C)

       \[\frac{\omega (M+2m)}{M}\]

D)

       \[\frac{\omega M}{M+m}\]

View Answer
34) The figure shows a plot of photo current versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement?

A)

Curves a and b represent incident radiations of different frequencies and different intensities

B)

Curves a and b represent incident radiations of same frequency but of different intensities

C)

Curves b and c represent incident radiations of different frequencies and different intensities

D)

Curves b and c represent incident radiations of same frequency having same intensity

View Answer
35) Power dissipated in an L-C-R series circuit connected to an AC source of \[emf\] s is

A)

\[{{V}_{c}}=2\]

B)

\[\text{A}\]

C)

\[\text{A}\]

D)

\[c{{m}^{-2}}{{s}^{-1}}\]

View Answer
36) The electric potential at a point (x, y, z) is given by \[\varepsilon \] The electric field \[\varepsilon \]at that point is

A)

\[\varepsilon \]

B)

\[\varepsilon \]

C)

\[\hat{i}+2\hat{j}+\hat{k}\]

D)

\[-3\hat{i}-2\hat{j}+\hat{k},\]

View Answer
37) A bar magnet having a magnetic moment of \[-2\hat{i}+2\hat{k}\] is free to rotate in a horizontal plane.   A   horizontal   magnetic   field \[-2\hat{i}-\hat{j}+\hat{k}\] exists in the Space. The work done in taking the magnet slowly from a direction parallel to the field to a direction 60° from the field is

A)

0.6 J

B)

                                       12 J

C)

6 J

D)

       23

View Answer
38) A galvanometer having a coil resistance of \[2\hat{i}-\hat{j}-2\hat{k}\]shows full scale deflection when a current of A passes through it. It can be converted into an ammeter to read currents up to 5.0 A by

A)

putting in parallel a resistance of\[\frac{1}{2}m{{v}^{3}}\]

B)

putting in series a resistance of \[m{{v}^{3}}\]

C)

putting in series a resistance of \[\frac{1}{2}m{{v}^{2}}\]

D)

putting in parallel a resistance of\[\frac{1}{2}{{m}^{2}}{{v}^{2}}\]

View Answer
39) The two ends of a rod of length L and a uniform cross-sectional area A are kept at two temperatures \[30m{{s}^{-1}}\]and\[330m{{s}^{-1}},\]The rate of heat transfer, \[{{Z}_{1}}\], through the rod in a steady state is given by

A)

\[{{M}_{1}}\]

B)

\[{{Z}_{2}}\]

C)

\[{{M}_{2,}}\]

D)

\[{{r}_{0.}}\]

View Answer
40) See the electrical circuit shown in this figure. Which of the following equations is a correct equation for it?

A)

\[{{M}_{1}}\times {{M}_{2}}\]

B)

\[{{Z}_{1}}{{Z}_{2}}\]

C)

\[{{Z}_{1}}\]

D)

\[{{M}_{1}}\]

View Answer
41) The mean free path of electrons in a metal is \[\frac{C}{3},\frac{V}{3}\]The electric field which can give on an average 2 eV energy to an electron in the metal will be in unit of \[3C,\frac{V}{3}\]

A)

\[\frac{V}{3},3V\]

B)

       \[3C,3V\]

C)

       \[-2\mu C\]

D)

       \[(2\hat{i}+3\hat{j})\times {{10}^{6}}m{{s}^{-1}}\]

View Answer
42) The number of photoelectrons emitted for light of a frequency v (higher than the threshold frequency \[=-{{k}_{0}}x+{{k}_{1}}{{x}^{2}}\] ) is proportional to

A)

\[=-k(x+a)\]

B)

threshold frequency \[=k(x+a)\]

C)

intensity of light

D)

frequency of light (v)

View Answer
43) Each of the two strings of length 51.6 cm and 49.1 cm are tensioned separately by 20 N force. Mass per unit length of both the strings is same and equal to \[k,{{k}_{0}},{{k}_{1}}\]When both the strings vibrate simultaneously the number of beats is

A)

5

B)

7

C)

       8

D)

       3

View Answer
44) The ionization energy of the electron in the hydrogen atom in its ground state is 13.6 eV atoms are excited to higher energy levels to emit radiations of 6 wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between

A)

n = 3 to n = 2 states

B)

n = 3 to n = 1 states

C)

n = 2 to n = 1 states

D)

n =4 to n = 3. states

View Answer
45) Four identical thin rods each of mass M and length l, form a square frame. Moment of inertia of this frame about an axis through the centre of the square and perpendicular to its plane is

A)

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

B)

       \[3\times {{10}^{16}}\]

C)

       \[9\times {{10}^{15}}\]

D)

       \[3\times {{10}^{19}}\]

View Answer
46) In thermodynamic processes which of the following statements is not true?

A)

In an adiabatic process the system is insulated from the surroundings

B)

In an isochoric process pressure remains constant

C)

In an isothermal process the temperature remains constant

D)

In an adiabatic process \[\frac{{{\varepsilon }^{2}}R}{\left[ {{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}\]= constant

View Answer
47) The figure shows elliptical orbit of a planet m about the sun S. The shaded area SCD is twice the shaded area SAB. If \[\frac{{{\varepsilon }^{2}}\sqrt{{{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}}}}{R}\] is the time for the planet to move from C to D and \[\frac{{{\varepsilon }^{2}}\left[ {{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}} \right]}{R}\] is the time to move from A to B, then

A)

\[\frac{{{\varepsilon }^{2}}R}{\sqrt{{{R}^{2}}+{{\left( L\omega -\frac{1}{C\omega } \right)}^{2}}}}\]

B)

                       \[V=-{{x}^{2}}y-x{{z}^{3}}+4\]

C)

       \[\overrightarrow{E}\]

D)

       \[\overrightarrow{E}=\hat{i}(2xy+{{z}^{3}})+\hat{j}{{x}^{2}}+\hat{k}3x{{z}^{2}}\]

View Answer
48) Sodium has body centred packing. Distance between two nearest atoms is \[3.7\,\overset{\text{o}}{\mathop{\text{A}}}\,\]. The lattice parameter is

A)

\[6.8\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

\[4.3\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

                       \[3.0\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

       \[8.6\,\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
49) A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially un stretched. The maximum extension produced in the length of the spring will be

A)

Mg/k

B)

       -2 Mg/k

C)

       4 Mg/k

D)

       Mg/2k

View Answer
50) A body, under the action of a force \[\overrightarrow{E}=\hat{i}2xy+\hat{j}({{x}^{2}}+{{y}^{2}})+\hat{k}(3xz-{{y}^{2}})\]acquires an acceleration of \[1\,m{{s}^{-2}}\]. The mass of this body must be

A)

\[\overrightarrow{E}=\hat{i}(2xy-{{z}^{3}})+\hat{j}x{{y}^{2}}+\hat{k}3{{z}^{2}}x\]

B)

10kg

C)

       20kg

D)

       \[2\times {{10}^{4}}J{{T}^{-1}}\]

View Answer
51) Which of the following molecules acts as a Lewis acid?

A)

\[B=6\times {{10}^{4}}T\]

B)

\[60\Omega \]

C)

       \[240\,\Omega \]

D)

       \[15\,\Omega \]

View Answer
52) Which of the following reactions is an example of nucleophilic substitution reaction?

A)

\[240\,\Omega \]

B)

\[15\,\Omega \]

C)

\[{{T}_{1}}\]

D)

\[{{T}_{2}}({{T}_{1}}>{{T}_{2}}).\]

View Answer
53) From the following bond energies: H?H bond energy: 431.37 kJ \[\frac{dQ}{dt}\] C = O bond energy: 606.10 kJ\[\frac{dQ}{dt}=\frac{KL({{T}_{1}}-{{T}_{2}})}{A}\] C - C bond energy: 336.49 kJ\[\frac{dQ}{dt}=\frac{K({{T}_{1}}-{{T}_{2}})}{LA}\] C ? H bond energy: 410.50 kJ \[\frac{dQ}{dt}=KLA({{T}_{1}}-{{T}_{2}})\] Enthalpy for the reaction, \[\frac{dQ}{dt}=\frac{KA({{T}_{1}}-{{T}_{2}})}{L}\]will be

A)

1523.6 kJ \[{{\varepsilon }_{1}}-({{i}_{1}}+{{i}_{2}})R-{{i}_{1}}{{r}_{1}}=0\]

B)

- 243.6 kJ\[{{\varepsilon }_{2}}-{{i}_{2}}{{r}_{2}}-{{\varepsilon }_{1}}-{{i}_{1}}{{r}_{1}}=0\]

C)

- 120.0 kJ\[-{{\varepsilon }_{2}}-({{i}_{1}}+{{i}_{2}})R+{{i}_{2}}{{r}_{2}}=0\]

D)

553.0 kJ\[{{\varepsilon }_{1}}-({{i}_{1}}+{{i}_{2}})R+{{i}_{2}}{{r}_{2}}=0\]

View Answer
54) Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?

A)

\[3{{d}^{3}},\,4{{s}^{2}}\]

B)

\[3{{d}^{5}},\,4{{s}^{1}}\]

C)

\[3{{d}^{5}},\,4{{s}^{2}}\]

D)

\[3{{d}^{2}},\,\,4{{s}^{2}}\]

View Answer
55) The ionisation constant of ammonium hydroxide is \[4\times {{10}^{-8}}m.\] at 298 K. Hydrolysis constant of ammonium chloride is

A)

\[V{{m}^{-1}}\]

B)

\[8\times {{10}^{7}}\]

C)

       \[5\times {{10}^{-11}}\]

D)

       \[8\times {{10}^{-11}}\]

View Answer
56) Which of the following oxides is not expected to react with sodium hydroxide?

A)

\[5\times {{10}^{7}}\]

B)

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

C)

       \[\text{v-}{{\text{v}}_{\text{0}}}\]

D)

       \[\text{(}{{\text{v}}_{\text{0}}})\]

View Answer
57) Which of the following does not show optical isomerism ?         (en = ethylenediamine)

A)

\[\text{1g}{{\text{m}}^{\text{-1}}}.\]

B)

\[\frac{4}{3}M{{l}^{2}}\]

C)

\[\frac{2}{3}M{{l}^{2}}\]

D)

\[\frac{13}{3}M{{l}^{2}}\]

View Answer
58) Which one of the following is employed as a tranquilizer ?

A)

Equanil

B)

Naproxen

C)

Tetracycline

D)

Chlorpheninamine

View Answer
59) \[\frac{1}{3}M{{l}^{2}}\]is reduced by electrolysis at low potentials and high currents. If \[\text{p}{{\text{V}}^{}}\] A of current is passed through molten \[{{t}_{1}}\] for 6 h, what mass of aluminium is produced ? (Assume 100% current efficiency, at. mass of \[{{t}_{2}}\])

A)

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

B)

       \[{{t}_{1}}=4{{t}_{2}}\]

C)

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

D)

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

View Answer
60) Trichloroacetaldehyde, \[\overrightarrow{F}=6\hat{i}-8\hat{j}+10\hat{k},\]reacts with chlorobenzene in presence of sulphuric acid and produces

A)

B)

C)

D)

View Answer
61) Which of the following complex ions is expected to absorb visible light ? \[1m{{s}^{-2}}.\]

A)

\[2\sqrt{10}kg\]

B)

\[10\sqrt{2}kg\]

C)

\[{{(C{{H}_{3}})}_{3}}B\]

D)

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

View Answer
62) Half-life period of a first order reaction is 1386s. The specific rate constant of the reaction is

A)

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

B)

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

C)

       \[RX+KOH\xrightarrow[{}]{{}}ROH+KX\]

D)

       \[2RX+2Na\xrightarrow[{}]{{}}R-R+2NaX\]

View Answer
63) Consider the following reaction,   \[RX+{{H}_{2}}\xrightarrow[{}]{{}}RH+HX\]the product, Z, is

A)

toluene

B)

benzaldehyde

C)

benzoic acid

D)

       benzene

View Answer
64) Copper crystallises in a face-centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm?

A)

128

B)

                                       157

C)

       181

D)

       198

View Answer
65) For the reaction, \[RX+Mg\xrightarrow[{}]{{}}RMgX\]products, it is observed that (1) On doubling the initial concentration of A only, the rate of reaction is also doubled and. (2) On doubling the initial concentrations of both A and B, there is a change by a factor of 8 in the rate of the reaction. The rate of this reaction is, given by

A)

rate\[\text{mo}{{\text{l}}^{\text{-1}}}\]

B)

rate\[\text{mo}{{\text{l}}^{\text{-1}}}\]

C)

                       rate\[\text{mo}{{\text{l}}^{\text{-1}}}\]

D)

       rate\[\text{mo}{{\text{l}}^{\text{-1}}}\]

View Answer
66) According to MO theory which of the following lists ranks the nitrogen species in tends of increasing bond order ?

A)

\[\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,=\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,+\text{H}-\xrightarrow[{}]{{}}\text{H}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{H} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{H}\]

B)

\[\text{mo}{{\text{l}}^{\text{-1}}}\]

C)

       \[\text{mo}{{\text{l}}^{\text{-1}}}\]

D)

       \[\text{mo}{{\text{l}}^{\text{-1}}}\]

View Answer
67) The state of hybridization of \[\text{mo}{{\text{l}}^{\text{-1}}}\]and \[1.77\times {{10}^{-5}}\]is in the following sequence

A)

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

B)

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

C)

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

D)

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

View Answer
68) Among the following which is the strongest oxidising agent ?

A)

\[5.65\times {{10}^{-10}}\]

B)

       \[6.50\times {{10}^{-12}}\]

C)

\[5.65\times {{10}^{-13}}\]

D)

       \[5.65\times {{10}^{-12}}\]

View Answer
69) The equivalent conductance of\[{{B}_{2}}{{O}_{3}}\] solution of a weak monobasic acid is \[8.0\,\,\text{mho}\,\text{c}{{\text{m}}^{2}}\] and at infinite dilution is \[400\,\,\text{mho}\,\,\text{c}{{\text{m}}^{2}}\]. The dissociation constant of this acid is

A)

\[CaO\]

B)

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

C)

       \[BeO\]

D)

       \[{{[Co{{(en)}_{2}}C{{l}_{2}}]}^{+}}\]

View Answer
70) Structures of some common polymers are given. Which one is not correctly presented?

A)

Teflon \[{{[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]}^{0}}\]

B)

Neoprene \[{{[Co(en)C{{l}_{2}}{{(N{{H}_{3}})}_{2}}]}^{+}}\]

C)

Terylene

D)

Nylon 66 \[{{[Co{{(en)}_{3}}]}^{3+}}\]

View Answer
71) Oxidation numbers of P in \[A{{l}_{2}}{{O}_{3}}\]of S in \[4.5\times {{10}^{4}}\]and that of Cr in \[A{{l}_{2}}{{O}_{3}}\] are respectively,

A)

+5, +6 and +6

B)

       +3, +6 and +5

C)

                       +5, +3 and +6

D)

       -3, +6 and +6

View Answer
72) The IUPAC name of the compound having the formula \[\text{A}l=27\text{g}\,\text{mo}{{\text{l}}^{-1}}\]is

A)

3-butene-1-yne

B)

1-butyn-3-ene

C)

but-1-yne-3-ene

D)

1-butene-3-yne

View Answer
73) In the case of alkali metals, the covalent character decreases in the order

A)

MCl > Ml > MBr > MF

B)

MF > MCl > MBr > Ml

C)

MF > MCl >, MI > MBr

D)

Al > MBr > MCl > MF

View Answer
74) Given, (i)\[9.0\times {{10}^{3}}g\]          \[8.1\times {{10}^{4}}g\] (ii)\[2.4\times {{10}^{5}}g\]         \[1.3\times {{10}^{4}}g\] Electrode potential, £° for the reaction, \[CC{{l}_{3}}CHO\]will be-

A)

0.52 V

B)

       0.90 V

C)

       0.30 V

D)

       0.38 V

View Answer
75) For the reaction, \[(At.no.Zn=30,Sc=21,Ti=22,Cr=24)\]if \[{{[Sc{{({{H}_{2}}O)}_{3}}{{(N{{H}_{3}})}_{3}}]}^{3+}}\] mol \[{{[Ti{{(en)}_{2}}{{(N{{H}_{3}})}_{2}}]}^{4+}}\]the value of \[{{[Cr{{(N{{H}_{3}})}_{6}}]}^{2+}}\]would be

A)

\[{{[Zn{{(N{{H}_{3}})}_{6}}]}^{2+}}\]

B)

\[5.0\times {{10}^{-3}}{{s}^{-1}}\]

C)

       \[0.5\times {{10}^{-2}}{{s}^{-1}}\]

D)

       \[0.5\times {{10}^{-3}}{{s}^{-1}}\]

View Answer
76) What is the \[0.0\times {{10}^{-2}}{{s}^{-1}}\]in the final solution prepared by mixing 20.0 mL of 0.050 M HCl with 30.0 mL of 0.10 M \[Phenol\xrightarrow[{}]{Zn\,dust}X\xrightarrow[Anhydrous\,AlC{{l}_{3}}]{C{{H}_{3}}Cl}Y\xrightarrow[{}]{\begin{smallmatrix} Alkaline \\ KMn{{O}_{4}} \end{smallmatrix}}Z,\]?

A)

0.10 M

B)

       0.40 M

C)

       0.0050 M

D)

       0.12 M

View Answer
77) Out of \[A+B\to \]and \[=k{{[A]}^{2}}[B]\] (Z of \[=k[A]{{[B]}^{2}}\]) the colourless species are

A)

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

B)

\[N_{2}^{-}<{{N}_{2}}<N_{2}^{2-}\] and \[N_{2}^{2-}<N_{2}^{-}<{{N}_{2}}\]

C)

\[{{N}_{2}}<N_{2}^{2-}<N_{2}^{-}\]and\[N_{2}^{-}<N_{2}^{2-}<{{N}_{2}}\]

D)

\[{{C}_{2}},{{C}_{3}},{{C}_{5}}\] and \[{{C}_{6}}\]

View Answer
78) Amongst the elements with following electronic configurations, which one of them may have the highest ionisation energy ?

A)

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

B)

\[[Ne]3{{s}^{2}}\,3{{p}^{2}}\]

C)

       \[{{I}_{2}}\]

D)

       \[[Ne]\,3{{s}^{2}}\,3{{p}^{1}}\]

View Answer
79) Maximum number of electrons in a subshell of, an atom is determined by the following

A)

\[\frac{M}{32}\]

B)

       \[1.25\times {{10}^{-5}}\]

C)

       \[1.25\times {{10}^{-6}}\]

D)

       \[6.25\times {{10}^{-4}}\]

View Answer
80) Lithium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of the lithium will be

A)

240.8pm

B)

       151.8pm

C)

       75.5pm

D)

       300.5pm

View Answer
81) The segment of DNA, which acts as the instrumental manual for the synthesis of the protein is

A)

nucleotide

B)

       ribose

C)

       gene

D)

       nucleoside

View Answer
82) Predict the product,

A)



B)



C)



D)

View Answer
83) Which of the following compounds will exhibit cis-trans (geometrical) isomerism ?

A)

2-butene

B)

Butanol

C)

       2-butyne

D)

       2-butenol

View Answer
84) The values of \[1.25\times {{10}^{-4}}\]and\[-C{{F}_{2}}-C{{F}_{2}}-{{)}_{n}}\]for the reaction, \[{{\left( -C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ Cl \end{smallmatrix}}{\mathop{C}}\,=CH-C{{H}_{2}}-C{{H}_{2}}- \right)}_{n}}\]are 170 kJ and \[-{{[NH{{(C{{H}_{2}})}_{6}}NHCO{{(C{{H}_{2}})}_{4}}-CO-]}_{n}}\]respectively. This reaction will be spontaneous at

A)

710 K

B)

                       910 K

C)

       1110 K

D)

       510 K

View Answer
85) \[PO_{4}^{3-},\]on heating with periodic acid gives

A)

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

B)

                     2HCOOH

C)

\[C{{r}_{2}}O_{7}^{2-}\]

D)



View Answer
86) The dissociation constants for. acetic acid and HCN at 25°C are \[CH\equiv C-CH=C{{H}_{2}}\]and \[C{{u}^{2+}}+2{{e}^{-}}\xrightarrow[{}]{{}}Cu,\]respectively. The equilibrium constant for the equilibrium,\[{{E}^{o}}=0.337V\]\[C{{u}^{2+}}+{{e}^{-}}\xrightarrow[{}]{{}}C{{u}^{+}},\]would be

A)

\[{{E}^{o}}=0.153V\]

B)

       \[Cu+{{e}^{-}}\xrightarrow[{}]{{}}Cu,\]

C)

       \[{{N}_{2}}+3{{H}_{2}}\xrightarrow[{}]{{}}2N{{H}_{3}},\]

D)

       \[\frac{d[N{{H}_{3}}]}{dt}=2\times {{10}^{-4}}\]

View Answer
87) Nitrobenzene can be prepared from benzene by using a mixture of cone \[HN{{O}_{3}}\], and cone. \[{{L}^{-1}}{{s}^{-1}},\]In the mixture, nitric acid acts as a/an:

A)

reducing agent

B)

acid

C)

       base

D)

       catalyst

View Answer
88) In the reaction, \[\frac{-d[{{H}_{2}}]}{dt}\] \[3\times {{10}^{4}}\,mol\,{{L}^{-1}}\,{{s}^{-1}}\] The rate of appearance of bromine \[4\times {{10}^{4}}\,mol\,{{L}^{-1}}\,{{s}^{-1}}\]) is related to rate of disappearance of bromide ions as following

A)

\[6\times {{10}^{4}}\,mol\,{{L}^{-1}}\,{{s}^{-1}}\]

B)

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

C)

\[[O{{H}^{-}}]\]

D)

\[\text{Ba(OH}{{\text{)}}_{\text{2}}}\]

View Answer
89) In which of the following molecules/ions \[TiF_{6}^{2-},CoF_{6}^{3-},C{{u}_{2}}C{{l}_{2}}\]and \[NiCl_{4}^{2-}\]the central atom is sp2 hybridised ?

A)

\[Ti=22,co=27,Cu=29,Ni=28\]and\[TiF_{6}^{2-}\]

B)

       \[CoF_{6}^{3-}\]and\[C{{u}_{2}}C{{l}_{2}}\]

C)

                       \[NO_{2}^{-}\] and\[TiF_{6}^{2-}\]

D)

        \[C{{u}_{2}}C{{l}_{2}}\]and\[CoF_{6}^{3-}\]

View Answer
90) Which of the following hormones contains iodine ?

A)

Insulin

B)

       Testosterone

C)

Adrenaline

D)

       Thyroxine

View Answer
91) 10 g of hydrogen and 64 of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be

A)

2 mol

B)

                                       3 mol

C)

       4 mol

D)

       1 mol

View Answer
92) The energy absorbed by each molecule \[NiCl_{4}^{2-}\] of a substance is \[[Ne]3{{s}^{2}}3{{p}^{3}}\] and bond energy per molecule is \[[Ne]3{{s}^{2}}3{{p}^{3}}\]. The kinetic energy of the molecule per atom will be

A)

\[[Ar]3{{d}^{10}},4{{s}^{2}}4{{p}^{3}}\]

B)

       \[[Ne]3{{s}^{2}}3{{s}^{2}}3{{p}^{1}}\]

C)

       \[4l+2\]

D)

       \[2l+1\]

View Answer
93) The straight chain polymer is formed by

A)

hydrolysis of \[4l-2\] followed by condensation polymerization

B)

hydrolysis of \[2{{n}^{2}}\]followed by condensation polymerization

C)

hydrolysis of \[\Delta H\] by addition polymerization

D)

hydrolysis of \[\Delta S\]followed by condensation polymerization

View Answer
94) The stability of +1 oxidation state increases in the sequence

A)

\[Al<Ga<\ln <Tl\]

B)

\[Tl<\ln \,<Ga<Al\]

C)

\[\ln <Tl<Ga<Al\]

D)

\[Ga<\ln <Al<Tl\]

View Answer
95) Consider the following reaction, \[\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{CHO} \end{smallmatrix}}{\mathop{\text{CHO}}}\,\] \[1.5\times {{10}^{-s}}\] the product Z, is

A)

\[4.5\times {{10}^{-10}},\]

B)

\[C{{N}^{-}}+C{{H}_{3}}COOH\]

C)

\[HCN+C{{H}_{3}}CO{{O}^{-}}\]

D)

\[3.0\times {{10}^{5}}\]

View Answer
96) A 0.0020 m aqueous solution .of an ionic compound \[3.0\times {{10}^{-5}}\] freezes at 0.00732° C. Number of moles of ions which 1 mol of ionic compound produces on being dissolved in water will be \[3.0\times {{10}^{-4}}\]

A)

2

B)

       3

C)

                       4

D)

       1

View Answer
97) What is the dominant intermolecular force or bond that must be overcome in converting liquid \[3.0\times {{10}^{4}}\]to a gas?

A)

Hydrogen bonding

B)

Dipole-dipole interaction

C)

Covalent bonds

D)

London dispersion force

View Answer
98) Benzene reacts with \[{{H}_{2}}S{{O}_{4}},\] in the presence of anhydrous \[BrO_{3}^{-}(aq)+5B{{r}^{-}}(aq)+6{{H}^{+}}\xrightarrow[{}]{{}}\] to form

A)

toluene

B)

chlorobenzene

C)

benzylchloride

D)

xylene

View Answer
99) Which of the following is not permissible arrangement of electrons in an atom?

A)

\[3B{{r}_{2}}(l)+3{{H}_{2}}O(l)\]

B)

\[(B{{r}_{2}})\]

C)

\[\frac{d[B{{r}_{2}}]}{dt}=-\frac{3}{5}\frac{d[B{{r}^{-}}]}{dt}\]

D)

\[\frac{d[B{{r}_{2}}]}{dt}=-\frac{5}{3}\frac{d[B{{r}^{-}}]}{dt}\]

View Answer
100) Propionic acid with \[B{{r}_{2}}-P\] yields a dibromo product. Its structure would be

A)

\[\frac{d[B{{r}_{2}}]}{dt}=\frac{5}{3}\frac{d[B{{r}^{-}}]}{dt}\]

B)

\[\frac{d[B{{r}_{2}}]}{dt}=\frac{3}{5}\frac{d[B{{r}^{-}}]}{dt}\]

C)

\[B{{F}_{3}},NO_{2}^{-},NH_{2}^{-}\]

D)

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

View Answer
101) The bacterium Bacillus thuringiensis is widely used in contemporary biology as a/an

A)

indicator of water pollution

B)

insecticide

C)

agent for production of dairy products

D)

source of industrial enzyme

View Answer
102) Chipko movement was launched for the protection of

A)

grasslands

B)

forests

C)

       livestock

D)

       wet lands

View Answer
103) A health disorder that results from the deficiency of thyroxin in adults and characterized by (i) a low metabolic rate (ii) increase in body weight (iii) tendency to retain water in tissues is

A)

hypothyroidism

B)

       simple goiter

C)

                       myxoedema

D)

       cretinism

View Answer
104) Elbow joint is an example of

A)

pivot joint

B)

      hinge joint

C)

gliding joint

D)

       ball and socket joint

View Answer
105) The correct sequence of plants in a hydrosere is

A)

Oak \[NO_{2}^{-}\]Lantana\[NH_{2}^{-}\]Scirpus\[NH_{2}^{-}\]Pistia\[{{H}_{2}}O\]Hydrilla\[NH_{2}^{-}\]Volvox

B)

Volvox\[{{H}_{2}}O\]Hydrilla\[B{{F}_{3}}\]Pistia\[NO_{2}^{-}\]Scirpus\[({{A}_{2}})\] Lantana\[4.4\times {{10}^{-19}}J\]Oak

C)

Pistia\[4.0\times {{10}^{-19}}J\]Volvox\[2.0\times {{10}^{-20}}J\]Scirpus\[2.2\times {{10}^{-19}}J\]Hydrilla\[2.0\times {{10}^{-19}}J\] Oak \[4.0\times {{10}^{-20}}J\]Lantana

D)

Oak\[{{(C{{H}_{3}})}_{3}}SiCl\]Lantana\[C{{H}_{3}}SiC{{l}_{3}}\]Volvox\[{{(C{{H}_{3}})}_{4}}Si\]Hydrilla\[{{(C{{H}_{3}})}_{2}}SiC{{l}_{2}}\] Pistia\[Al<Ga<In<Tl\]Scirpus

View Answer
106) Mannitol is the stored food in of

A)

Chara

B)

       Porphyra

C)

       Fucus

D)

       Gracillaria

View Answer
107) The epithelial tissue present on the inner surface of bronchioles and fallopian tubes is

A)

cuboidal

B)

       glandular

C)

       ciliated

D)

       Squamous

View Answer
108) Which one of the following pairs of food components in humans reaches the stomach totally undigested?

A)

Protein and starch

B)

Starch and fat

C)

Fat and cellulose

D)

Starch and cellulose

View Answer
109) Uric acid is the chief nitrogenous component of the excretory products of

A)

man

B)

                                       earthworm

C)

cockroach

D)

       Frog

View Answer
110) Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

A)

Coelenterates (cnidarians)

B)

Aschelminthes (roundworms)

C)

Ctenophores

D)

Sponges

View Answer
111) Tiger is not a resident, in which one of the following national park?

A)

Ranthambhor

B)

Sunderbans

C)

       Gir

D)

       Jim Corbett

View Answer
112) A change in the amount of yolk and its distribution in the egg will affect

A)

formation of zygote

B)

pattern of cleavage

C)

number of blastomeres produced

D)

Fertilization

View Answer
113) When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from

A)

marasmus

B)

       rickets

C)

kwashiorkor

D)

       Pellagra

View Answer
114) Stroma in the chloroplasts of higher plants contains

A)

light-independent reaction enzymes

B)

light-dependent reaction enzymes

C)

ribosomes

D)

Chlorophyll

View Answer
115) Which, one of the following correctly describes the location of some body parts in the earthworm Pheretima?

A)

Two pairs of accessory glands in 16-18 segments

B)

Four pairs of sperm thecae in 4-7 segments

C)

One pair of ovaries attached (at Inter segmental septum of 14th and 15th segments

D)

Two pairs of testes in 10th and 11th segments

View Answer
116) Foetal ejection reflex in human female is induced by

A)

pressure exerted by amniotic fluid

B)

release of oxytocin from pituitary

C)

fully developed foetus and placenta

D)

differentiation of mammary glands

View Answer
117) Which one of the following has haplontic life cycle?

A)

Funaria

B)

       Polytrichum

C)

Ustilago

D)

       Wheat

View Answer
118) Which of the following plant species you would select for the production of bioethanol?

A)

Brossica

B)

       Zea mays

C)

       Pongamia

D)

       Jatropha

View Answer
119) Which part of human brain is concerned with the regulation of body temperature?

A)

Medulla oblongata

B)

Cerebellum

C)

Cerebrum

D)

       Hypothalamus

View Answer
120) Which one of the following is the correct pairing of a body part and the kind of muscle tissue that moves it?

A)

Heart wall                            ? Involuntary un striated muscle

B)

Biceps of upper arm       ? Smooth muscle fibres

C)

Abdominal wall                 ? Smooth muscle

D)

Iris                                          ? Involuntary smooth muscle

View Answer
121) In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of

A)

natural selection whereby the darker forms were selected

B)

appearance of the darker coloured individuals due to very poor sunlight

C)

protective mimicry

D)

inheritance of darker colour character acquired due to the darker environment

View Answer
122) Oxygenic photosynthesis occurs in

A)

Chromatium

B)

       Oscillatoria

C)

Rhodospirillum

D)

       Chlorobium

View Answer
123) The genetic defect-Adenosine Deaminase (ADA) deficiency may be cured permanently by

A)

periodic infusion of genetically engineered lymphocytes having functional ADA cDNA

B)

administering adenosine deaminase activators

C)

introducing bone marrow cells producing ADA into cells at early embryonic stages

D)

enzyme/replacement therapy

View Answer
124) The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is

A)

maturing

B)

       elongating

C)

       widening

D)

       Differentiating

View Answer
125) In barley stem, vascular bundles are

A)

open and scattered

B)

closed and scattered

C)

open and in a ring

D)

closed and radial

View Answer
126) Sickle cell anaemia is

A)

an autosomal linked dominant trait

B)

caused by substitution of valine by glutamic acid in the p-globin chain of haemoglobin

C)

caused by a change in base pair of DNA

D)

characterized by elongated sickle like RBCs with a nucleus

View Answer
127) If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is

A)

excretory fluid

B)

coelomic fluid

C)

haemolymph

D)

slimy mucus

View Answer
128) There is no DNA in

A)

an enucleated ovum

B)

mature RBCs

C)

a mature spermatozoan

D)

hair root

View Answer
129) Point mutation involves

A)

insertion

B)

change in single base pair

C)

duplication

D)

Deletion

View Answer
130) Which one of the following has maximum genetic diversity in India?

A)

Teak

B)

       Mango

C)

       Wheat

D)

       Tea

View Answer
131) In a standard ECG, which one of the following alphabets is the correct representation of the respective activity of the human heart?

A)

R-repolarisation of ventricles

B)

S-start of systole

C)

T-end of diastole

D)

P-depolarisation of the atria

View Answer
132) Study the pedigree chart given below What does it show?

A)

Inheritance of a sex-linked inborn error of metabolism like phenylketonuria

B)

Inheritance of a condition like phenylketonuria as an autosomal recessive trait

C)

The pedigree chart is wrong as this is not possible

D)

Inheritance of a recessive sex-linked disease like hemophilia

View Answer
133) Middle lamella is mainly composed of

A)

hemicellulose

B)

muramic acid

C)

calcium pectate

D)

phosphoglycerides

View Answer
134) Soma clones are obtained by

A)

tissue culture

B)

       plant breeding

C)

irradiation

D)

genetic engineering

View Answer
135) Which one of the following plants is monoecious?

A)

Marchantia

B)

       Pinus

C)

       Cycas

D)

       Papaya

View Answer
136) Which one of the following is the correct matching of three items and their grouping category?

A)

Items    Malleus, incus, cochlea                                  Group   Ear ossicles

B)

Items    Ilium, ischium, pubis                                       Group   Coxal bones of pelvic girdle

C)

Items    Actin, myosin, rhodopsin                              Group   Muscle proteins

D)

Items    Cytosine, uracil, thiamine                             Group   Pyrimidines

View Answer
137) Plasmodesmata are

A)

lignified cemented layers between cells

B)

locmotory structures

C)

membranes connecting the nucleus with plasmalemma

D)

connections between adjacent cells

View Answer
138) Which of the following is a pair of viral diseases?

A)

Ringworm, AIDS

B)

Common cold, AIDS

C)

Dysentery, common cold

D)

Typhoid, tuberculosis

View Answer
139) Aerobic respiratory pathway is appropriately termed

A)

catabolic

B)

       parabolic

C)

       amphibolic

D)

       Anabolic

View Answer
140) Which of the following is not used as a biopesticide?

A)

Bacillus thuringiensis

B)

Trichoderma harzianum

C)

Nuclear Polyhedrosis Virus (NPV)

D)

Xanthomonas campestris

View Answer
141) Alzhimer disease in humans is associated with the deficiency of

A)

dopamine

B)

glutamic acid

C)

acetylcholine

D)

Gamma Amino Butyric Acid (GABA)

View Answer
142) Cytoskeleton is made up of

A)

calcium carbonate granules

B)

cal lose deposits

C)

cellulosic microfibrils

D)

proteinaceous filaments

View Answer
143) Compared to blood our lymph has

A)

no plasma

B)

plasma without proteins

C)

more WBCs and no RBCs

D)

more RBCs and less WBCs

View Answer
144) Which one of the following is the most likely reason of not occuring regular menstruation cycle in females ?

A)

Fertilization of the ovum

B)

Maintenance of the hypertrophical endometrial lining

C)

Maintenance of high concentration of sex-hormones in the blood stream

D)

Retention of well-developed corpus luteum

View Answer
145) Given below is a schematic break-up of the phases/stages of cell cycle Which one of the following is the correct indication of the stage/phase in the cell cycle?

A)

B-Metaphase

B)

C-Karyokinesis

C)

D-Synthetic phase

D)

A-Cytokihesis

View Answer
146) The floral formula is that of

A)

tulip

B)

       soybean

C)

sun hemp

D)

tobacco

View Answer
147) The most popularly known blood, grouping is the ABO grouping. It is named ABO and not ABC, because 'O' in it refers to having

A)

other antigens besides A and B on RBCs

B)

over dominance of this type on the genes for A and B types

C)

one antibody only?either anti-A or anti-B on the RBCs

D)

no antigens A and B on RBCs

View Answer
148) Which one of the following statement is true regarding digestion and absorption of food in humans?

A)

Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

B)

Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like \[Tl<In<Ga<Al\].

C)

Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.

D)

About 60% of starch is hydrolysed by salivary amylase in our mouth.

View Answer
149) Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

A)

absence of secondary xylem

B)

absence of secondary phloem

C)

presence of Cortex

D)

position of protoxylem

View Answer
150) Manganese is required in

A)

nucleic acid synthesis

B)

plant cell wall formation

C)

photolysis of water during photosynthesis

D)

chlorophyll synthesis

View Answer
151) Which one of the following is commonly used in transfer of foreign DNA into crop plants?

A)

Trichoderma harzianum

B)

Meloidogyne incognita

C)

Agro bacterium tumefaciens

D)

Penicillium expansum

View Answer
152) Removal of introns and joining the exons in a defined order in a transcription unit is called

A)

splicing

B)

       tailing

C)

       transformation

D)

       Capping

View Answer
153) Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a triplet?

A)

Nirenberg and Mathaei

B)

Hershey and Chase

C)

Morgan and Sturtevant

D)

Beadle and Tatum

View Answer
154) Seminal plasma in human is rich in

A)

fructose, calcium and certain enzymes

B)

fructose and calcium but has no enzymes

C)

glucose and certain enzymes but has no calcium

D)

fructose and certain enzymes but poor in calcium

View Answer
155) Phylogenetic system of classification is based on

A)

evolutionary relationships

B)

morphological features

C)

chemical constituents

D)

floral characters

View Answer
156) Synapsis occurs between

A)

a male and a female gamete

B)

mRNA and ribosomes

C)

spindle fibres and centromere

D)

two homologous chromosomes

View Answer
157) Which one of the following pairs of animal comprises 'jawless fishes'?

A)

Lampreys and eels

B)

Mackerals and rbhu

C)

Lampreys and hag fishes

D)

Guppies and hag fishes

View Answer
158) Select the incorrect statement from the following

A)

linkage is an exception to the principle of independent assortment in heredity

B)

galactosemia is an inborn error of metabolism

C)

small population size results in random genetic drift in a population

D)

baldness is a sex limited trait

View Answer
159) The cell junctions called tight, adhering and gap junctions are found in

A)

muscular tissue

B)

connective tissue

C)

epithelial tissue

D)

neural tissue

View Answer
160) Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?

A)

Phytoplankton

B)

Fish

C)

Zooplankton

D)

Frog

View Answer
161) Use of anti-histamines and steroids give a quick relief from

A)

allergy

B)

       nausea

C)

       cough

D)

       Headache

View Answer
162) Which one is the wrong pairing for the disease and its causal organism?

A)

Late blight of potato?Altemaria solani

B)

Black rust of wheat?Puccinia graminis

C)

Loose smut of wheat?Ustilago nuda

D)

Root-knot of vegetables?Meloidogyne sp.

View Answer
163)   Given below is a diagrammatic sketch of a portion of human male reproductive system. Select the correct set of the names of the parts labelled A, B, C, D.

A)

                A                             B                             C                                             D Ureter                                    Prostate                 Seminal vesicle                     Bulbourethral gland

B)

Vas deferens                         Seminal vesicle     Prostate                                 Bulbourethral gland

C)

Vas deferens                         Seminal vesicle     Bulbourethral gland            Prostate

D)

Ureter                                    Seminal vesicle     Prostate                                 Bulbourethral gland

View Answer
164) Vegetative propagation in mint occurs by

A)

runner

B)

       offset

C)

       rhizome

D)

       sucker

View Answer
165) What will happen if the stretch receptors of the urinary bladder wall are totally removed?

A)

Urine will not collect in the bladder

B)

Micturition will continue

C)

Urine with continue to collect normally in the bladder

D)

There will be no micturition

View Answer
166) One of the synthetic auxin is

A)

NAA

B)

       IAA

C)

       GA

D)

       IBA

View Answer
167) A country with a high rate of population growth took measures to reduce it. The figure below shows age sex pyramids of populations. A and B twenty years apart. Select the correct interpretation about them Interpretations

A)

'A' is more recent and shows slight reduction in the growth rate

B)

'B' is earlier pyramid and shows stabilized growth rate

C)

'B' is more recent showing that population is very young

D)

'A' is the earlier pyramid and no change has occurred in the growth rate.

View Answer
168) The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is

A)

spermatocyte-spermatogonia-spermatid sperms

B)

spermatogonia-spermatocyte-spermatid sperms

C)

spermatid-spermatocyte-spermatogonia ?sperms

D)

spermatogonia-spermatid-spermatocyte ?sperms

View Answer
169) What is true about Bt toxin?

A)

The inactive protoxin gets converted into active form in the insect gut

B)

Bt protein exists as active toxin in the Bacillus

C)

The activated toxin enters the ovaries of the pest to sterilize it and thus prevent its multiplication

D)

The concerned Bacillus has antitoxins

View Answer
170) The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in

A)

vertebrae

B)

       nails

C)

ear ossicles

D)

tip of the nose

View Answer
171) DDT residues are rapidly passed through food chain causing bio magnification because DDT is

A)

lipo soluble

B)

moderately toxic

C)

non-toxic to aquatic animals

D)

water soluble

View Answer
172) Which one of the following is a vascular cryptogam?

A)

Equisetum

B)

       Ginkgo

C)

                       Marchantia

D)

       Cedrus

View Answer
173) Steps taken by the Government of India to control air pollution include

A)

compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel

B)

compulsory PUC [Pollution Under Control) certification of petrol driven vehicles, which tests for carbon monoxide and hydrocarbons

C)

permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles

D)

use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks

View Answer
174) Montreal protocol aims at

A)

reduction of ozone depleting substances

B)

biodiversity conservation

C)

control of water pollution

D)

control of \[In<Tl<Ga<Al\]emission

View Answer
175) Which one of the following acids is a derivative of carotenoids?

A)

Indole-butyric acid

B)

Indole-3-acetic acid

C)

Gibberellic acid

D)

Abscisic acid

View Answer
176) Guard cells help in

A)

protection against grazing

B)

transpiration

C)

guttation

D)

fighting against infection

View Answer
177) Palisade parenchyma is absent in leaves of

A)

Sorghum

B)

       mustard

C)

                       soybean

D)

Gram

View Answer
178) Cotyledons and testa are edible parts of

A)

groundnut and pomegranate

B)

walnut and tamarind

C)

frerich bean and coconut

D)

cashew nut and litchi

View Answer
179) Which one of the following is considered important in the development of seed habit?

A)

Dependent sporophyte

B)

Heterospory

C)

Haplontic life cycle

D)

Free-living gametophyte

View Answer
180) T O Diener discovered a

A)

free infectious RNA

B)

free infectious DNA

C)

infectious protein

D)

Bacteriophage

View Answer
181) Polyethylene glycol method is used for

A)

gene transfer without a vector

B)

biodiesel production

C)

seedless fruit production

D)

energy production from sewage

View Answer
182) Which one of the following pairs is wrongly matched?

A)

Detergents         ? Lipase

B)

Alcohol                 ? Nitrogenase

C)

Fruit juice            ? Pectinase

D)

Textile                  ? Amylase

View Answer
183) A person likely to develop tetanus is immunised by administering

A)

dead germs

B)

preformed antibodies

C)

wide spectrum antibiotics

D)

weakened germs

View Answer
184) Biochemical Oxygen Demand (BOD) in a river water

A)

remains unchanged when algal bloom occurs

B)

has no relationship with concentration of oxygen in the water

C)

gives a measure of Salmonella in the water

D)

increases when sewage gets mixed with river water

View Answer
185) Which one of the following is the correct matching of the events occurring during menstrual cycle?

A)

Ovulation? LH and FSH attain peak level and sharp fall in the secretion of progesterone

B)

Proliferadve?Rapid regeneration of phase myometrium and maturation of Graafian follicle

C)

Development of?Secretory phase and corpus luteum increased secretion of progesterone

D)

Menstruation ? Breakdown of myometriuni and ovum not fertilized

View Answer
186) Cyclic-photophosphorylation results in the formation of

A)

NADPH

B)

ATP and NADPH

C)

ATP, NADPH and \[{{O}_{2}}\]

D)

ATP

View Answer
187) Globulins contained in human blood plasma are primarily involved in

A)

defence mechanisms of body

B)

osmotic balance of body fluids

C)

oxygen transport in the blood

D)

clotting of blood

View Answer
188) Which of the following is a symbiotic nitrogen fixer?

A)

Glomus

B)

       Azotobacter

C)

Frankia

D)

       Azolla

View Answer
189) An example of axile placentation is

A)

Argemone

B)

       Dianthus

C)

       lemon

D)

Marigold

View Answer
190) Semi conservative replication of DNA was first demonstrated in

A)

Drosophila melariogaster

B)

Escherichia coli

C)

Streptococcus pneumonia

D)

Salmonella typhimurium

View Answer
191) A young infant may be feeding entirely on mother's milk, which is white in colour but the stools, which the infant passes out is quite yellowish. What is this yellow colour due to?

A)

Intestinal juice

B)

Bile pigments passed through bile juice

C)

Undigested milk protein casein

D)

Pancreatic juice poured into duodenum

View Answer
192) A fruit developed from hypanthodium inflorescence is called

A)

hesperidium

B)

       sorosis

C)

       syconus

D)

       Caryopsis

View Answer
193) Which one of the following statements is correct?

A)

Patients, who had undergone surgery are given cannabinoids to relieve pain

B)

Benign tumours show the property of metastasis

C)

Heroin accelerates body functions

D)

Malignant tumours may exhibit metastasis

View Answer
194) Transgenic plants are

A)

produced by a somatic embryo in artificial medium

B)

generated by introducing foreign DNA in to a cell and regenerating a plant from that cell

C)

produced after protoplast fusion in artificial medium

D)

grown in artificial medium after hybridization in the field

View Answer
195) The letter T in T-lymphocyte refers to

A)

thyroid

B)

       thalamus

C)

       tonsil

D)

       thymus

View Answer
196) Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by

A)

Rio de Janeiro Conference

B)

The Montreal Protocol

C)

The Koyoto Protocol

D)

The Vienna Convention

View Answer
197) Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

A)

xerophytes

B)

      mesophytes

C)

epiphytes

D)

       hydrophytes

View Answer
198) An example of a seed with endosperm, perisperm and caruncle is

A)

cotton

B)

       coffee

C)

       lily

D)

       castor

View Answer
199) What is not true for genetic code?

A)

A codon in mRNA is read in a non-contiguous fashion

B)

It is nearly universal

C)

It is degenerate

D)

It is unambiguous

View Answer
200) Peripatus is a connecting link between

A)

Ctenophora and Platyhelminthes

B)

Mollusca and Echinodermata

C)

Annelida and Arthropoda

D)

Coelenterata and Porifera

View Answer