# Solved papers for NEET AIPMT SOLVED PAPER SCREENING 2011

### done AIPMT SOLVED PAPER SCREENING 2011 Total Questions - 200

• question_answer1) In the Davisson and Germer experiment, the velocity of electrons emitted from the electron gun can be increased by

A)
increasing the filament current

B)
decreasing the filament current

C)
decreasing the potential difference between the anode and filament

D)
increasing the potential difference between the anode and filament

• question_answer2) Symbolic representation of four logic gates are shown as (i)  (ii)  (iii)  (iv)  Pick out which ones are for AND, NAND and NOT gates, respectively.

A)
(iii), (ii) and (i)

B)
(iii), (ii) and (iv)

C)
(ii), (iv) and (iii)

D)
(ii), (iii) and (iv)

• question_answer3) A radioactive nucleus of mass M emits a photon of frequency v and the nucleus recoils. The recoil energy will be

A)
${{h}^{2}}{{v}^{2}}/2M{{c}^{2}}$

B)
zero

C)
$hv$

D)
$M{{c}^{2}}-hv$

• question_answer4) A particle moves in a circle of radius 5 cm with constant speed and time period 0.2 us. The acceleration of the particle is

A)
$25\,m/{{s}^{2}}$

B)
$36\,m/{{s}^{2}}$

C)
$5\,m/{{s}^{2}}$

D)
$15\,m/{{s}^{2}}$

• question_answer5) The power obtained in a reactor using ${{U}^{235}}$ disintegration is 1000 kW. The mass decay of ${{U}^{235}}$ per hour is

A)
$20\mu g$

B)
$40\mu g$

C)
$1\mu g$

D)
$10\mu g$

• question_answer6) The half-life of a radioactive isotope X is 50 yr. It decays to another element Y which is stable. The two elements X and Y were found to be in the ratio of 1 : 15 in a sample of a given rock. The age of the rock was estimated to be

A)
200 yr

B)
250 yr

C)
100 yr

D)
150 yr

• question_answer7) A parallel plate condenser has a uniform electric field E (V/m) in the space between the plates. If the distance between the plates is d(m) and area of each plate is $A({{m}^{2}})$ the energy (joule) stored in the condenser is

A)
$\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}$

B)
${{\varepsilon }_{0}}EAd$

C)
$\frac{1}{2}{{\varepsilon }_{0}}{{E}^{2}}Ad$

D)
${{E}^{2}}Ad/{{\varepsilon }_{0}}$

• question_answer8) The instantaneous angular position of a point on a rotating wheel is given by the equation $Q(\tau )=2{{\tau }^{3}}-6{{\tau }^{2}}$ The torque on the wheel becomes zero at

A)
$\tau =0.5\,s$

B)
$\tau =0.25\,s$

C)
$\tau =2\,s$

D)
$\tau =1\,s$

• question_answer9) If power dissipated in the $9\,\Omega$ resistor in the circuit shown is 36 W, the potential difference across the $2\,\Omega$ resistor is

A)
8 V

B)
10 V

C)
2V

D)
4 V

• question_answer10) Two waves are represented by the equations ${{y}_{1}}-a\sin (\omega t+kx+0.57)m$and ${{y}_{2}}-a\cos \,(\omega t+kx)m,$in, where x is in metre and t in second. The phase difference between them is

A)

B)

C)

D)

• question_answer11) In photoelectric emission process from a metal of work function 1.8 eV, the kinetic energy of most energetic electrons is 0.5 eV. The corresponding stopping potential is

A)
1.3V

B)
0.5V

C)
2.3V

D)
1.8V

• question_answer12) A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration $1.0\,\,m/{{s}^{2}}$. If $g=10\,\,m/{{s}^{2}},$ the tension in the supporting cable is

A)
9680 N

B)
11000 N

C)
1200 N

D)
8600 N

• question_answer13) Out of the following functions representing motion of a particle which represents SHM I.             $y=\sin \omega t-\cos \omega t$ II.            $y={{\sin }^{3}}\omega t$ III.           $y=5\cos \left( \frac{3\pi }{4}-3\,\omega t \right)$ IV.          $y=1+\omega t+{{\omega }^{2}}{{t}^{2}}$

A)
Only (IV) does not represent SHM

B)
(I) and (III)

C)
(I) and (II)

D)
Only (I)

• question_answer14) The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its mid-point and perpendicular to its length is ${{I}_{0}}.$Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is

A)
${{I}_{0}}+M{{L}^{2}}/4$

B)
${{I}_{0}}+2M{{L}^{2}}$

C)
${{I}_{0}}+M{{L}^{2}}$

D)
${{I}_{0}}+M{{L}^{2}}/2$

• question_answer15) If a small amount of antimony is added to germanium crystal

A)
the antimony becomes an acceptor atom

B)
there will be more free electrons than holes in the semiconductor

C)
its resistance is increased

D)
it becomes a p-type semiconductor

• question_answer16) Sound waves travel at 350 m/s through a warn air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air

A)
increases by a factor 20

B)
increases by a factor 10

C)
decreases by a factor 20

D)
decreases by a factor 10

• question_answer17) Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be

A)
1 : 2

B)
1 : 1

C)
1 : 5

D)
1 : 4

• question_answer18) A current of 2 A flows through a $2\,\Omega$ resistor when connected across a battery. The same battery supplies a current of 0.5 A when connected across a $9\,\Omega$ resistor. The internal resistance of the battery is

A)
$1/3\,\,\Omega$

B)
$1/4\,\,\Omega$

C)
$1\,\Omega$

D)
$0.5\,\Omega$

• question_answer19) The electric and the magnetic field, associated with an electromagnetic wave, propagating along the +z-axis, can be represented by

A)
$[\mathbf{E}={{E}_{0}}\mathbf{\hat{k}},\mathbf{B}={{B}_{0}}\mathbf{\hat{i}}]$

B)
$[\mathbf{E}={{E}_{0}}\mathbf{\hat{j}}\,,\mathbf{B}={{B}_{0}}\mathbf{\hat{j}}\,]$

C)
$[\mathbf{E}={{E}_{0}}\mathbf{\hat{j}}\,,\mathbf{B}={{B}_{0}}\mathbf{\hat{k}}\,]$

D)
$[\mathbf{E}={{E}_{0}}\mathbf{\hat{i}}\,,\mathbf{B}={{B}_{0}}\mathbf{\hat{j}}\,]$

• question_answer20) A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small, which graph correctly depicts the position of the particle as a function of time?

A)

B)

C)

D)

• question_answer21) When 1kg of ice at ${{0}^{\text{o}}}C$ melts to water at ${{0}^{\text{o}}}C$, the resulting change in its entropy, taking latent heat of ice to be 80 cal/°C, is

A)
$8\times {{10}^{4}}\,cal/K$

B)
$80\,\,cal/K$

C)
$293\,\,cal/K$

D)
$273\,\,cal/K$

• question_answer22) A planet moving along an elliptical orbit is 28 closest to the sun at a distance ${{r}_{1}}$ and farthest away at a distance of${{r}_{2}}.$ If${{v}_{1}}$ and ${{r}_{2}}$ are the linear velocities at these points respectively, then the ratio$\frac{{{v}_{1}}}{{{v}_{2}}}$ is

A)
${{r}_{2}}/{{r}_{1}}$

B)
${{({{r}_{2}}/{{r}_{1}})}^{2}}$

C)
${{r}_{1}}/{{r}_{2}}$

D)
${{({{r}_{1}}/{{r}_{2}})}^{2}}$

• question_answer23) A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric flux will

A)
be reduced to half

B)
remain the same

C)
be doubled

D)
increase four times

• question_answer24) The rate of increase of thermo-emf with temperature at the neutral temperature of a thermocouple

A)
is zero

B)
depends upon the choice of the two materials of the thermocouple

C)
is negative

D)
is positive

• question_answer25) Fusion reaction takes place at high temperature because

A)
atoms get ionised at high temperature

B)
kinetic energy is high enough to overcome the coulomb repulsion between nuclei

C)
molecules break up at high temperature

D)
nuclei break up at high temperature

• question_answer26) A nucleus $_{n}^{m}X$ emits one a-particle and two ${{}^{\text{-}}}$ particles. The resulting nucleus is

A)
$_{n}^{m-6}Z$

B)
$_{n}^{m-4}X$

C)
$_{n-2}^{m-4}Y$

D)
$_{n-4}^{m-6}Z$

• question_answer27) There are four light-weight-rod samples A, B, C, D separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted (i) A is feebly repelled (ii) B is feebly attracted (iii) C is strongly attracted (iv) D remains unaffected Which one of the following is true?

A)
C is of a diamagnetic material

B)
D is of a ferromagnetic material

C)
A is of a non-magnetic material

D)
B is of a paramagnetic material

• question_answer28) During an isothermal expansion, a confined ideal gas does -150 J of work against its surroundings. This implies that

A)
300 J of heat has been added to the gas

B)
no heat is transferred because the process is isothermal

C)
150 J of heat has been added to the gas

D)
150 J of heat has been removed from the gas

• question_answer29) Photoelectric emission occurs only when the incident light has more than a certain minimum

A)
wavelength

B)
intensity

C)
frequency

D)
power

• question_answer30) Electrons used in an electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100 kV then the de-Broglie wavelength associated with the electrons would

A)
decrease by 2 times

B)
decrease by 4 times

C)
increase by 4 times

D)
increase by 2 times

• question_answer31) In an AC circuit an alternating voltage $e=200\sqrt{2}\sin$100t volt is connected to a capacitor of capacity $1\,\mu F$. The $rms$ value of the current in the circuit is

A)
100 mA

B)
200 mA

C)
20 mA

D)
10 mA

• question_answer32) A boy standing at the top of a tower of 20 m height drops a stone. Assuming $g=10\,m{{s}^{-2}}$, the velocity with which it hits the ground is

A)
20 m/s

B)
40 m/s

C)
5 m/s

D)
10 m/s

• question_answer33) A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The power exerted by the gravitational force is greatest

A)
at the instant just before the body hits the earth

B)
it remains constant all through

C)
at the instant just after the body is projected

D)
at the highest position of the body

• question_answer34) Pour electric charges +q, + q, - q and - q are placed at the comers of a square of side 2L (see figure). The electric potential at point A, mid-way between the two charges + q and + q, is

A)
$\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{2a}{L}\left( 1+\frac{1}{\sqrt{5}} \right)$

B)
$\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{2a}{L}\left( 1-\frac{1}{\sqrt{5}} \right)$

C)
zero

D)
$\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{2q}{L}\left( 1+\sqrt{5} \right)$

• question_answer35) The dimensions of ${{({{\mu }_{0}}{{\varepsilon }_{0}})}^{-1/2}}$

A)
$[{{L}^{-1}}T]$

B)
$[L{{T}^{-1}}]$

C)
$[{{L}^{-1/2}}\,{{T}^{1/2}}]$

D)
$[{{L}^{1/2}}\,{{T}^{-1/2}}]$

• question_answer36) A body is moving with velocity 30 m/s towards east. After 10 s its velocity becomes 40 m/s towards north. The average acceleration of the body is

A)
$7\,m/{{s}^{2}}$

B)
$\sqrt{7}\,m/{{s}^{2}}$

C)
$5\,m/{{s}^{2}}$

D)
$1\,m/{{s}^{2}}$

• question_answer37) A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens?

A)
Virtual, upright, height = 0.5 cm

B)
Real, inverted, height = 4 cm

C)
Real, inverted, height = 1 cm

D)
Virtual, upright, height = 1 cm

• question_answer38) The wavelength of the first line of Lyman series for hydrogen atom is equal to that of the second line of Balmer series for a hydrogen like ion. The atomic number Z of hydrogen like ion is

A)
4

B)
1

C)
2

D)
3

• question_answer39) Which of the following is not due to total internal reflection?

A)
Difference between apparent and real depth of a pond

B)
Mirage on hot summer days

C)
Brilliance of diamond

D)
Working of optical fibre

• question_answer40) The potential energy of a system increase if work is done

A)
by the system against a conservative force

B)
by the system against a neoconservative force

C)
upon the system by a conservative force

D)
upon the system by a neoconservative force

• question_answer41) In forward biasing of the p-n junction

A)
the positive terminal of the battery is connected to n-side and the depletion region becomes thin

B)
the positive terminal of the battery is connected to n-side and the depletion region becomes thick

C)
the positive terminal of the battery is connected to p-side and the depletion region become thin

D)
the positive terminal of the battery is connected to p-side and the depletion region becomes thick

• question_answer42) A missile is fired for maximum range with a initial velocity of 20 m/s. If $g=10\,\,m/{{s}^{2}},$ the range of the missile is

A)
50 m

B)
60 m

C)
20 m

D)
40 m

• question_answer43) The current; in a coil varies with time as shown in the figure. The variation of induced emf with time would be

A)

B)

C)

D)

• question_answer44) An AC voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to $3\,\Omega ,$the phase difference between the applied voltage and the current in the circuit is

A)
$\pi /4$

B)
$\pi /2$

C)
zero

D)
$\pi /6$

• question_answer45) Force F on a particle moving in a straight line varies with distance d as shown in the figure. The work done on the particle during its displacement of 12 m is

A)
21 J

B)
26 J

C)
13 J

D)
18 J

• question_answer46) A current carrying closed loop in the form of a right angle isosceles triangle ABC is placed in a uniform magnetic field acting along AB. If the magnetic force on the arm BC is F, the force on the arm AC is

A)
$-\mathbf{F}$

B)
$\mathbf{F}$

C)
$\sqrt{2}\mathbf{F}$

D)
$-\sqrt{2}\mathbf{F}$

• question_answer47) The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is

A)
gamma   rays, ultraviolet, infrared, microwaves

B)
(b microwaves, gamma rays, infrared, ultraviolet

C)
infrared, microwave, ultraviolet, gamma rays

D)
microwave infrared, ultraviolet, gamma rays

• question_answer48) A transistor is operated in common emitter configuration at ${{V}_{C}}=2\,V$ such that a change in the base current from 100 $\text{A}$ to 300 $\text{A}$ produces a change in the collector current from 10 mA to 20 mA. The current gain is

A)
75

B)
100

C)
25

D)
50

• question_answer49) A body of mass M hits normally a rigid wall with velocity v and bounces back with the same velocity. The impulse experienced by the body is

A)
1.5 Mv

B)
2 Mv

C)
zero

D)
Mv

• question_answer50) A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected in the region such that its velocity is pointed along the direction of fields, then the electron

A)
speed will decrease

B)
speed will increase

C)
will turn towards left of direction of motion

D)
will turn towards right of direction a motion

• question_answer51) Standard electrode potential of three metals X, Y and Z are -1.2 V, + 0.5 V and -3.0 V respectively. The reducing power of these metal will be

A)
Y > X > Z

B)
Z > X > Y

C)
X > Y > Z

D)
Y > Z > X

• question_answer52) Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.

A)
$C{{H}_{3}}-C\equiv C-C{{H}_{3}}$

B)
$C{{H}_{2}}=CH-C{{H}_{2}}-C\equiv CH$

C)
$C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}$

D)
$C{{H}_{3}}-CH=CH-C{{H}_{3}}$

• question_answer53) Clemmensen reduction of a ketone is carried out in the presence of which of the following?

A)
Zn-Hg with HCl

B)
$LiAl{{H}_{4}}$

C)
${{H}_{2}}$ and Pt as catalyst

D)
Glycol with KOH

• question_answer54) A gaseous mixture was prepared by taking equal moles of CO and ${{N}_{2}}$. If the total pressure of the mixture was found 1 atmosphere the partial pressure of the nitrogen $({{N}_{2}})$ in the mixture is

A)
0.8 atm

B)
0.9 atm

C)
1 atm

D)
0.5 atm

• question_answer55) In the following reactions, (I) $\text{C}{{\text{H}}_{\text{3}}}-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{3}} & \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{CH}}}\,-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{OH} \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{3}}}\xrightarrow[{}]{{{\text{H}}^{\text{+}}}\text{/Heat}}$ {{\left( \overset{\text{A}}{\mathop{\begin{align} & \text{major} \\ & \text{product} \\ \end{align}}}\, \right)}^{\text{+}}}\left( \overset{\text{B}}{\mathop{\begin{align} & \text{major} \\ & \text{product} \\ \end{align}}}\, \right) (ii)$\text{A}\xrightarrow[\text{in}\,\text{absence}\,\text{of}\,\text{peroxide}]{\text{HBr,dark}}$ {{\left( \overset{\text{C}}{\mathop{\begin{align} & \text{major} \\ & \text{product} \\ \end{align}}}\, \right)}^{\text{+}}}\left( \overset{\text{D}}{\mathop{\begin{align} & \text{major} \\ & \text{product} \\ \end{align}}}\, \right) the major products (A) and (C) are respectively

A)
$\text{C}{{\text{H}}_{\text{3}}}-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{=}\,\text{CH}-\text{C}{{\text{H}}_{\text{3}}}$ and $\text{C}{{\text{H}}_{\text{3}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{Br} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{CH}{{ }_{\text{2}}}-\text{C}{{\text{H}}_{\text{3}}}$

B)
$\text{C}{{\text{H}}_{\text{3}}}-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{=}\,\text{CH}-\text{C}{{\text{H}}_{\text{3}}}$and $\text{C}{{\text{H}}_{\text{3}}}-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\underset{\begin{smallmatrix} | \\ \text{Br} \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{3}}}$

C)
$\text{C}{{\text{H}}_{2}}=\,\,\,\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{C}{{\text{H}}_{2}}-\text{C}{{\text{H}}_{\text{3}}}$and $\text{C}{{\text{H}}_{\text{3}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{Br} \end{smallmatrix}}{\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{C}{{\text{H}}_{\text{2}}}-\text{C}{{\text{H}}_{\text{3}}}$

D)
$\text{C}{{\text{H}}_{\text{2}}}\text{=}\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,-\text{C}{{\text{H}}_{\text{2}}}-\text{C}{{\text{H}}_{\text{3}}}$and $\underset{\begin{smallmatrix} | \\ \text{Br} \end{smallmatrix}}{\mathop{\text{C}{{\text{H}}_{\text{2}}}}}\,-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\,\text{CH}\,}}\,-\text{C}{{\text{H}}_{\text{2}}}-\text{C}{{\text{H}}_{\text{3}}}$

• question_answer56) If x is amount of adsorb ate and m is amount of adsorbent, which of the following relations is not related to adsorption process?

A)
$\frac{x}{m}=f(T)$ at constant?

B)
$p=f(T)$ at constant $\left( \frac{x}{m} \right)$

C)
$\frac{x}{m}=p\times T$

D)
$\frac{x}{m}=f$(p) at constant T

• question_answer57) The freezing point depression constant for water is $-{{1.86}^{o}}C\,{{m}^{-1}}.$If 5.00 g $N{{a}_{2}}S{{O}_{4}}$is dissolved in $45.0g\,{{H}_{2}}O,$ the freezing point is changed by -3.82°C. Calculate the van't Hoff factor for $N{{a}_{2}}S{{O}_{4}}.$

A)
2.63

B)
3.11

C)
0.381

D)
2.05

• question_answer58) Which of the two ions from the list given below, have the geometry that is explained by the same hybridisation          of          orbitals, $NO_{2}^{-},NO_{3}^{-},NH_{2}^{-},NH_{4}^{+},SC{{N}^{-}}?$

A)
$NH_{4}^{-}\,and\,NO_{3}^{-}$

B)
$SCN_{{}}^{-}\,and\,NH_{2}^{-}$

C)
$NO_{2}^{-}\,and\,NH_{2}^{-}$

D)
$NO_{2}^{-}\,and\,NH_{3}^{-}$

• question_answer59) The d-electron configurations of $C{{r}^{2+}},M{{n}^{2+}},$ $F{{e}^{2+}}$ and $C{{o}^{2+}}$ are ${{d}^{4}},{{d}^{5}},{{d}^{6}}$ and ${{d}^{7}}$ respectively. Which one of the following will exhibit minimum paramagnetic behaviour? (At. no. Cr = 24, Mn = 25, Fe = 26, Co = 27)

A)
${{[Fe{{({{H}_{2}}O)}_{6}}]}^{2+}}$

B)
${{[Co{{({{H}_{2}}O)}_{6}}]}^{2+}}$

C)
${{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}}$

D)
${{[Mn{{({{H}_{2}}O)}_{6}}]}^{2+}}$

• question_answer60) For the four successive transition elements (Cr, Mn, Fe and Co), the stability of +2 oxidation state will be there in which of the following order? (At. no. Cr = 24, Mn = 25, Fe = 26, Co = 27)

A)
Fe > Mn > Co > Cr

B)
Co > Mn > Fe > Cr

C)
Cr > Mn > Co > Fe

D)
Mn > Fe > Cr > Co

• question_answer61) The van't Hoff factor, i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively.

A)
less than one and less than one

B)
greater than one and less than one

C)
greater than one and greater than one

D)
less than one and greater than one

• question_answer62) Which one of the following statements is not true regarding (+) lactose?

A)
(+) lactose is a $\text{-}$glycoside formed by the union of a molecule of D(+) glucose and a molecule of D(+) galactose

B)
(+) lactose is a reducing sugar and does not exhibit mutarotation

C)
(+) lactose,${{C}_{12}}{{H}_{22}}{{O}_{11}}$contains 8-OH groups

D)
On hydrolysis (+) lactose gives equal amount of D (+) glucose and D (+) galactose

• question_answer63) If the ${{\text{E}}^{\text{o}}}_{\text{cell}}$for a given reaction has a negative value then which of the following gives the correct relationships for the values of ${{\text{G}}^{\text{o}}}$ and ${{\text{K}}_{\text{eq}}}$?

A)
$\Delta {{\text{G}}^{\text{o}}}\text{}\,\text{0;}\,{{\text{K}}_{\text{eq}}}>1$

B)
$\Delta {{\text{G}}^{\text{o}}}\text{}\,\text{0;}\,{{\text{K}}_{\text{eq}}}<1$

C)
$\Delta {{\text{G}}^{\text{o}}}>\,\text{0;}\,{{\text{K}}_{\text{eq}}}<1$

D)
$\Delta {{\text{G}}^{\text{o}}}>\,\text{0;}\,{{\text{K}}_{\text{eq}}}>1$

• question_answer64) Which one of the following is employed as antihistamine?

A)
Diphenyl hydramine

B)
Norethindrone

C)
Omeprazole

D)
Chloramphenicol

• question_answer65) Which of the following elements is present as the impurity to the maximum extent in the pig iron?

A)
Carbon

B)
Silicon

C)
Phosphorus

D)
Manganese

• question_answer66) Of the following complex ions, which is diamagnetic in nature?

A)
${{[Ni{{(CN)}_{4}}]}^{2-}}$

B)
${{[CuC{{l}_{4}}]}^{2-}}$

C)
${{[Co{{F}_{6}}]}^{3-}}$

D)
${{[NiC{{l}_{4}}]}^{2-}}$

• question_answer67) The electrode potentials for $C{{u}^{2+}}(aq)+{{e}^{-}}\xrightarrow[{}]{{}}C{{u}^{+}}(aq)$and $C{{u}^{+}}(aq)+{{e}^{-}}\xrightarrow[{}]{{}}Cu(s)$ Are + 0.15 V and + 0.50 v respectively. The value of ${{E}^{o}}_{C{{u}^{2+}}/Cu}$will be

A)
0.325 V

B)
0.650 V

C)
0.150 V

D)
0.500 V

• question_answer68) If the enthalpy change for the transition of liquid water to steam is 30 kJ mol-1 at 27°C, the entropy change for the process would be

A)
$\text{1}\text{.0J}\,\text{mo}{{\text{l}}^{\text{-1}}}\,{{\text{K}}^{\text{-1}}}$

B)
$\text{0}\text{.1}\,\text{J}\,\text{mo}{{\text{l}}^{\text{-1}}}\,{{\text{K}}^{\text{-1}}}$

C)
$100\,\text{J}\,\text{mo}{{\text{l}}^{\text{-1}}}\,{{\text{K}}^{\text{-1}}}$

D)
$10\,\text{J}\,\text{mo}{{\text{l}}^{\text{-1}}}\,{{\text{K}}^{\text{-1}}}$

• question_answer69) Which one of the following statements for the order of a reaction is incorrect?

A)
Order is not influenced by stoichiometric coefficient of the reactants

B)
Order of reaction is sum of power to the concentration terms of reactants to express the rate of reaction

C)
Order of reaction is always whole number

D)
Order   can   be   determined   only experimentally

• question_answer70) The correct order of increasing bond length of $C-H,C-O,C-C$and$C=C$is

A)
$C-C<C=C<C-O<C-H$

B)
$C-O<C-H<C-C<C=C$

C)
$C-H<C-O<C-C<C=C$

D)
$C-H<C=C<C-O<C-C$

• question_answer71) Which of the following is least likely to behave as Lewis base?

A)
$N{{H}_{3}}$

B)
$B{{F}_{3}}$

C)
$O{{H}^{-}}$

D)
${{H}_{2}}O$

• question_answer72) Of the following which one is classified as polyester polymer?

A)
Bakelite

B)
Melamine

C)
Nylon-66

D)
Terylene

• question_answer73) A buffer solution is prepared in which the concentration of $N{{H}_{3}}$ is 0.30 M and the concentration of $\text{NH}_{\text{4}}^{\text{+}}$ is 0.20 M. If the equilibrium constant, ${{K}_{b}}$ for $N{{H}_{3}}$ equals $1.8\times {{10}^{-5}},$ what is the pH of this solution? (log 2.7 =0.43)

A)
9.43

B)
11.72

C)
8.73

D)
9.08

• question_answer74) Standard electrode potential for $\text{S}{{\text{n}}^{\text{4+}}}\text{/S}{{\text{n}}^{\text{2+}}}$ couple is +0.15 V and that for the $C{{r}^{3+}}/Cr$ couple is -0.74. These two couples in their standard state are connected to make a cell. The cell potential will be

A)
+ 0.89 V

B)
+ 0.18 V

C)
+ 1.83 V

D)
+ 1.199 V

• question_answer75) In a set of reactions, m-bromobenzoic acid gave a product D. Identify the product D.

A)

B)

C)

D)

• question_answer76) Name the type of the structure of silicate in which one oxygen atom of${{\text{ }\!\![\!\!\text{ Si}{{\text{O}}_{\text{4}}}\text{ }\!\!]\!\!\text{ }}^{\text{4-}}}$is shared?

A)
Sheet silicate

B)
Pyrosilicate

C)
Three dimensional silicate

D)
Linear chain silicate

• question_answer77) The correct IUPAC name of the compound is

A)
3-ethyl-4-ethenylheptane

B)
3-ethyl-4-propylhex-5-ene

C)
3-(1-ethyl propyl) hex-1-ene

D)
4-ethyl-3-propylhex-1-ene

• question_answer78) What is the product obtained in the following reaction?

A)

B)

C)

D)

A)
$q\ne 0,\Delta T=0,W=0$

B)
$q=0,\Delta T=0,W=0$

C)
$q=0,\Delta T<0,W\ne 0$

D)
$q=0,\Delta T\ne 0,W=0$

• question_answer80) Enthalpy change for the reaction, $4H(g)\xrightarrow[{}]{{}}2{{H}_{2}}(g)$is ? 869.6 kJ The dissociation energy of H?H bond is

A)
$-869.6\,kJ$

B)
$+\,434.8\,kJ$

C)
$+\,217.4\,kJ$

D)
$-\,434.8\,kJ$

• question_answer81) Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of B will be

A)
12.25 u

B)
6.50 u

C)
25.00 u

D)
50.00 u

• question_answer82) The complexes $[Co{{(N{{H}_{3}})}_{6}}][R{{(CN)}_{6}}]$ and $[Cr{{(N{{H}_{3}})}_{6}}][Co{{(CN)}_{6}}]$ are the examples of which type of isomerism?

A)
Ionisation isomerism

B)
Co-ordination isomerism

C)
Geometrical isomerism

D)

• question_answer83) Which of the following pairs of metals is purified by van Arkel method?

A)
Zr and Ti

B)
Ag and Au

C)
Ni and Fe

D)
Ga and In

• question_answer84) Which one is a nucleophilic substitution reaction among the following?

A)
$\text{RCHO+R }\!\!'\!\!\text{ MaX}\xrightarrow[{}]{{}}\text{R}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \text{OH} \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{R}$

B)
$\text{C}{{\text{H}}_{\text{3}}}-\text{C}{{\text{H}}_{\text{2}}}-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{2}}}\text{Br}\,\text{+}\,\text{N}{{\text{H}}_{\text{3}}}\xrightarrow[{}]{{}}$$\text{C}{{\text{H}}_{\text{3}}}-\text{C}{{\text{H}}_{\text{2}}}-\overset{\begin{smallmatrix} \text{C}{{\text{H}}_{\text{3}}} \\ \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{2}}}\text{N}{{\text{H}}_{2}}$

C)
$\text{C}{{\text{H}}_{\text{3}}}\text{CHO}\,\text{+}\,\text{HCN}\xrightarrow[{}]{{}}\text{C}{{\text{H}}_{\text{3}}}\text{CH(OH)CN}$

D)
$\text{C}{{\text{H}}_{\text{3}}}-\text{CH}\,\text{=}\,\text{C}{{\text{H}}_{\text{2}}}+{{\text{H}}_{\text{2}}}\text{O}\xrightarrow[{}]{{{\text{H}}^{\text{+}}}}$$\text{C}{{\text{H}}_{\text{3}}}-\underset{\begin{smallmatrix} | \\ \text{OH} \end{smallmatrix}}{\mathop{\text{CH}\,}}\,-\text{C}{{\text{H}}_{\text{3}}}$

• question_answer85) Which of the following compounds has the lowest melting point?

A)
$CaB{{r}_{2}}$

B)
$Ca{{I}_{2}}$

C)
$Ca{{F}_{2}}$

D)
$CaC{{l}_{2}}$

• question_answer86) The total number of atomic orbitals in fourth energy level of an atom is

A)
16

B)
32

C)
4

D)
8

• question_answer87) Which one of the following is most reactive towards electrophonic reagent?

A)

B)

C)

D)

• question_answer88) By what factor does the average velocity of a gaseous   molecule   increase   when   the temperature (in Kelvin) is doubled?

A)
2.8

B)
4.0

C)
1.4

D)
2.0

• question_answer89) In Duma's method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (Aqueous tension at 300 K = 15 mm)

A)
16.45

B)
17.45

C)
14.45

D)
15.45

• question_answer90) The complex,$[Pt(Py)(N{{H}_{3}})BrCl]$will have how  many geometrical isomers?

A)
4

B)
0

C)
2

D)
3

• question_answer91) Mole fraction of the solute in a 1.00 molal aqueous solution is

A)
0.0177

B)
0.0344

C)
1.7700

D)
0.1770

• question_answer92) The value of $\Delta H$for the reaction ${{X}_{2}}(g)+4{{Y}_{2}}(g)\rightleftharpoons 2X{{Y}_{4}}(g)$ is less than zero. Formation of$X{{Y}_{4}}(g)$will be favored at

A)
low pressure and low temperature

B)
high temperature and low pressure

C)
high pressure and low temperature

D)
high temperature and high pressure

• question_answer93) The Lassaigne's extract is boiled with cone$\text{HN}{{\text{O}}_{\text{3}}}$while testing for halogens. By doing so it

A)
helps in the precipitation of $AgCl$

B)
increases the solubility product of $AgCl$

C)
increases the concentration of $NO_{3}^{-}$ ions

D)
decomposes $\text{N}{{\text{a}}_{\text{2}}}\text{S}$ and NaCN, if formed

• question_answer94) For the reaction ${{N}_{2}}(g)+{{O}_{2}}$$(g)2$$NO(g),$the equilibrium constant is ${{K}_{1}}$. The equilibrium constant is ${{K}_{2}}$ for the reaction $2NO(g)+{{O}_{2}}(g)$$2N{{O}_{2}}(g).$What is K for the reaction $N{{O}_{2}}(g)\frac{1}{2}{{N}_{2}}(g)+{{O}_{2}}(g)$?

A)
$1/(4{{K}_{1}}{{K}_{2}})$

B)
${{[1/{{K}_{1}}{{K}_{2}}]}^{1/2}}$

C)
$1/({{K}_{1}}{{K}_{2}})$

D)
$1/(2{{K}_{1}}{{K}_{2}})$

• question_answer95) The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e.,${{\lambda }_{1}}$ and ${{\lambda }_{2}}$will be

A)
${{\lambda }_{1}}=2{{\lambda }_{2}}$

B)
${{\lambda }_{1}}=4{{\lambda }_{2}}$

C)
${{\lambda }_{1}}=\frac{1}{2}{{\lambda }_{2}}$

D)
${{\lambda }_{1}}={{\lambda }_{2}}$

• question_answer96) Which of the following has the minimum bond length?

A)
$\text{O}_{2}^{-}$

B)
$\text{O}_{2}^{2-}$

C)
$\text{O}_{2}^{{}}$

D)
$\text{O}_{2}^{+}$

• question_answer97) Acidified ${{\text{K}}_{\text{2}}}\text{C}{{\text{r}}_{\text{2}}}{{\text{O}}_{\text{7}}}$ solution turns green when $\text{N}{{\text{a}}_{\text{2}}}\text{S}{{\text{O}}_{\text{3}}}$is added to it. This is due to the formation of

A)
$\text{CrO}_{4}^{2-}$

B)
$\text{C}{{\text{r}}_{\text{2}}}{{\text{(S}{{\text{O}}_{\text{3}}}\text{)}}_{\text{3}}}$

C)
$\text{CrS}{{\text{O}}_{4}}$

D)
$\text{C}{{\text{r}}_{\text{2}}}{{\text{(S}{{\text{O}}_{4}})}_{3}}$

• question_answer98) Which one of the following statements is not true?

A)
Concentration of DO below 6 ppm is good for the growth of fish

B)
Clean water would have a BOD value of less than 5 ppm

C)
Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant

D)
pH of drinking water should be between 5.5-9.5

• question_answer99) If n = 6, the correct sequence for filling of electrons will be

A)
$ns\xrightarrow[{}]{{}}(n-1)d\xrightarrow[{}]{{}}(n-2)f\xrightarrow[{}]{{}}np$

B)
$ns-(n-2)f\xrightarrow[{}]{{}}np\xrightarrow[{}]{{}}(n-1)d$

C)
$ns-np\xrightarrow[{}]{{}}(n-1)d\xrightarrow[{}]{{}}(n-2)f$

D)
$ns\xrightarrow[{}]{{}}(n-2)f\xrightarrow[{}]{{}}(n-1)d\xrightarrow[{}]{{}}np$

• question_answer100) Which one of the following is present as an active ingredient in bleaching powder for bleaching action?

A)
$\text{Ca(OCl}{{\text{)}}_{\text{2}}}$

B)
$\text{Ca}{{\text{O}}_{\text{2}}}\text{Cl}$

C)
$\text{CaC}{{\text{l}}_{\text{2}}}$

D)
$\text{CaOC}{{\text{l}}_{\text{2}}}$

• question_answer101) Given below is a sample of portion of DNA strand giving the base sequence on, the opposite strands. What is so, special shown in it? 5__GAATTC__3' 3'__CTTAAG__5'

A)
Deletion mutation

B)
Start codon at the 5' end

C)
Palindromic sequence of base pairs

D)
Replication completed

• question_answer102) Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be

A)
larger but to have smaller sex organs

B)
larger and to have large sex organs

C)
smaller and to have smaller sex organs

D)
smaller but to have larger sex organs

• question_answer103) Which one of the following statements is correct?

A)
Seeds of orchids have oil-rich endosperm

B)
Placentation in primrose is basal

C)
Flower of tulip is a modified shoot

D)
In tomato, fruit is a capsule

• question_answer104) Arteries are best defined as the vessels which

A)
carry blood away from the heart to different organs

B)
break up into capillaries which reunite to form a vein

C)
carry blood from one visceral organ to another visceral organs

D)
supply oxygenated blood to the different organs

• question_answer105) There is a restriction endonuclease called Eco RI. What does 'co' part in it stand for?

A)
Coelom

B)
Coenzyme

C)
coli

D)
Colon

• question_answer106) Consider the following four conditions (I-IV) and select the correct pair of them as adaptation to environment in desert lizards. The conditions: I. Burrowing in soil to escape high temperature II. Losing heat rapidly from the body during high temperature III. Bask in sun when temperature is low IV. Insulating body due to thick fatty dermis

A)
(I) and (III)

B)
(II) and (IV)

C)
(I) and (II)

D)
(III) and (IV)

• question_answer107) 'Jaya' and 'Ratna' developed for green revolution in India are the varieties of

A)
rice

B)
wheat

C)
bajra

D)
maize

• question_answer108) Agarose extracted from sea weeds finds use in

A)
tissue culture

B)
PCR

C)
gel electrophoresis

D)
spectrophotomeny

• question_answer109) Which one of the following structural formulae of two organic compounds is correctly identified along with its related function? -

A)
A ? Triglycerid ? source of energy

B)
B ? Uracil    ? a component of DNA

C)
A ? Lecithin   ? a component of cell membrane

D)
B ? Adenine   ? a nucleoride that makes up nucleic acids

• question_answer110) A certain patient is suspected to be suffering from acquired immuno deficiency syndrome. Which diagnostic technique will you recommend for its detection?

A)
MRI

B)
Ultra Sound

C)
WIDAL

D)
ELISA

• question_answer111) Which one of the following statements is correct for secondary succession?

A)
It occurs on a deforested site

B)
It follows primary succession

C)
It is similar to primary succession except that it has a relatively fast pace

D)
It begins on a bare rock

• question_answer112) Filiform apparatus is a characteristic feature of

A)
egg

B)
synergid

C)
zygote

D)
suspensor

• question_answer113) Which one of the following pairs of gases are the major cause of 'Green house effect'?

A)
$C{{O}_{2}}$ and CO

B)
CFCs and $S{{O}_{2}}$

C)
$C{{O}_{2}}$ and ${{N}_{2}}O$

D)
$C{{O}_{2}}$ and ${{O}_{3}}$

• question_answer114) Which one of the following expanded forms of the following acronyms is correct?

A)
UNEP                    ? United Nations Environmental Policy

B)
EPA                        ? Environmental Pollution Agency

C)
IUCN                     ? International Union for Conservation of Nature and Natural Resources

D)
IPCC       ? International Panel for Climate Change

• question_answer115) What are those structures that appear, as 'beads-on-string' in the chromosomes when viewed under electron microscope?

A)
Nucleotides

B)
Nucleosomes

C)
Base pairs

D)
Genes

• question_answer116) Which one of the following statements for pyramid of energy is incorrect, whereas the remaining three are correct?

A)
It shows energy content of different trophic level organisms

B)
It is inverted in shape

C)
It is upright in shape

D)

• question_answer117) Match the source gland with its.. respective hormone as well as the function,

A)
Source gland                      Hormone            Function Posterior pituitary           Vasopressin       Stimulates re sorption of water in the distal tubules in the nephron

B)
Corpus Iuteum                  Oestrogen          Supports pregnancy

C)
Thyroid                                 Thyroxine            Regulates

D)
Anterior pituitary             Oxytocin              Contraction of uterus muscles during child birth

• question_answer118) Medical Termination of Pregnancy (MTP) is considered safe up to have many weeks of pregnancy?

A)
Twelve weeks

B)
Eighteen weeks

C)
Six weeks

D)
Eight weeks

• question_answer119) The gametophyte is not an independent, free living generation in

A)

B)
Marchantia

C)
Pinus

D)
Polytrichum

• question_answer120) Which one of the following 'have the ?highest number of species in nature?

A)
Insects

B)
Birds

C)
Angiosperms

D)
Fungi

• question_answer121) Which one of the following statements is correct regarding blood pressure?

A)
100/55 mmHg is considered an ideal blood pressure

B)
105/50 mmHg makes one very active

C)
190/110 mmHg may harm vital organs like brain and kidney

D)
130/90 mmHg is considered high and requires treatment

• question_answer122) Given ahead is an incomplete table about certain hormones, their source glands and one major effect of each on the body in humans. Identify the correct option for the three blanks A, B and C.  Gland Secretion Effect on Body A Oestrogen Maintenance of second ary sexual characters Alpha cells of islets of Langerhans B Raises blood sugar level Anterior pituitary C Over secrection leads to gigantism
Options:

A)
A                  B                   C Placenta               Insulin        Vasopressin

B)
Ovary                    Insulin        Calcitonin

C)
Placenta               Glucagon    Calcitonin

D)
Ovary                   Glucagon    Growth hormone

• question_answer123) One very special feature in the earthworm Pheretima is that

A)
the typhlosole greatly increases the effective absorption area of the digested food in the intestine

B)
the S-shaped setae embedded in the integument are the defensive weapons used against the enemies

C)
it has a long dorsal tubular heart

D)
fertilization of eggs occurs inside the body

• question_answer124) The 'Eyes' of the potato tuber are

A)
flower buds

B)
shoot buds

C)
axillary buds

D)
root buds

• question_answer125) Which of the following is mainly produced by the activity of anaerobic bacteria on sewage?

A)
Propane

B)
Mustard gas

C)
Marsh gas

D)
Laughing gas

• question_answer126) Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement  of

A)
diaphragm

B)
neck

C)
tongue

D)
epiglottis

• question_answer127) The figure given below shows a small part of human lung where exchange of gas takes place. In which one of the options given below, the one part A, B C or D is correctly identified along with its function.

A)
A - Alveolar cavity  - main site of exchange of respiratory gases

B)
D - Capillary wall - exchange of and takes place here

C)
B - Red blood cell - transport of mainly

D)
- Arterial capillary - passes oxygen to tissues

• question_answer128) If for some reason, the vasa efferentia in the  human reproductive system get blocked, the gametes will not be transported from

A)
epididymis to vas deferens

B)
ovary to uterus

C)
vagina to uterus

D)
testes to epididymis

• question_answer129) Which one of the following helps in absorption of phosphorus from soil by plants?

A)
Rhizobium

B)
Frankia

C)
Anabaena

D)
Glomus

• question_answer130) Large woody vines are more commonly found in

A)
mangroves

B)
tropical rainforests

C)
alpine forests

D)
temperate forests

• question_answer131) The ciliated columnar epithelial cells in humans are known to occur in

A)
bronchioles and fallopian tubes

B)
bile duct and oesophagus

C)
fallopian tubes and urethra

D)
eustachian tube and stomach lining

• question_answer132) A person with unknown blood group under ABO system, has suffered much blood loss in an accident   and   needs   immediate   blood transfusion. His one friend who- has a valid certificate of his own blood type, offers for blood donation without delay. What would have been the type of blood group of the donor friend?

A)
Type AB

B)
Type O

C)
Type A

D)
Type B

• question_answer133) Which one of the following-is the most widely accepted method of contraception in India as at 'present?

A)
Tubectbmy

B)
Diaphragms

C)
lUDs (Intra Uterine Devices)

D)
Cervical caps

• question_answer134) CAM helps the plants in

A)
secondary growth

B)
disease resistance

C)
reproduction

D)
conserving water

• question_answer135) The function of leghaemoglobin in the root nodules of legumes is

A)
oxygen removal

B)
nodule differentiation

C)
expression of nif gene

D)
inhibition of nitrogenase activity

• question_answer136) 'Bundle of His' is a part of which one of the following organs in humans?

A)
Heart

B)
Kidney

C)
Pancreas

D)
Brain

• question_answer137) Organisms called Methanogens are most abundant in a

A)
cattle yard

B)
polluted stream

C)
hot spring

D)
sulphur rock

• question_answer138) Which of the following enzymes carries out the initial step in the digestion of milk in humans?

A)
Rennin

B)
Lipase

C)
Trypsin

D)
Pepsin

• question_answer139) The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eyes is a derivative of

A)
vitamin-C

B)
vitamin-D

C)
vitamin-A

D)
vitamin-B

• question_answer140) The process of RNA interference has been used in the development of plants resistant to

A)
fungi

B)
viruses

C)
insects

D)
nematodes

• question_answer141) Which one of the following organisms is not an example of eukaryotic cells?

A)
Escherichia coli

B)
Euglena viridis

C)
Amoeba, proteus

D)
Paramecium caudatum

• question_answer142) Which one of the following conditions correctly describes the manner of determining the sex in the given example?

A)
XO type of sex chromosomes determine male sex in grasshopper.

B)
XO condition in humans as found in Turner syndrome, determines female sex

C)
Homozygous sex chromosomes (XX) produce male in Drosophila

D)
Homozygous sex chromosomes (ZZ) determine female sex in birds

• question_answer143) Maximum number of existing transgenic animals is of

A)
mice

B)
cow

C)
pig

D)
fish

• question_answer144) Which one of the following shows maximum genetic diversity in India?

A)
Rice

B)
Maize

C)
Mango

D)
Groundnut

• question_answer145) Continuous addition of sugars in 'fed batch' fermentation is done to

A)
obtain antibiotics

B)
purify enzymes

C)

D)
produce methane

• question_answer146) What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

A)
63

B)
84

C)
21

D)
42

A)
convert free nitrogen to nitrogen compounds

B)
convert proteins into ammonia

C)
reduce nitrates to free nitrogen

D)
oxidize ammonia to nitrates

• question_answer148) Secondary sewage treatment is mainly a

A)
mechanical process

B)
chemical process

C)
biological process

D)
physical process

• question_answer149) Which one of the following is not a bio fertilizer?

A)
Rhizobium

B)
Nostoc

C)
Mycorrhiza

D)
Agrobacterium

• question_answer150) Mass of living matter at a trophic level in an area at any time is called

A)
Detritus

B)
Humus

C)
Standing state

D)
Standing crop

• question_answer151) Which one of the following plasma proteins is involved in the coagulation of blood?

A)
Serum amylase

B)
A globulin

C)
Fibrinogen

D)
An albumin

• question_answer152) What type of human population is represented by the following age pyramid?

A)
Stable population

B)
Declining population

C)
Expanding population

D)
Vanishing population

• question_answer153) Important site for formation of glycoproteins and glycolipids is

A)
Golgi apparatus

B)
plastid

C)
lysosome

D)
vacuole

• question_answer154) Which of the following is correctly states as it happens in the common cockroach?

A)
Oxygen is transported by haemoglobin in blood

B)
Nitrogenous excretory product is urea

C)
The food is ground by mandibles and gizzard

D)
Malpighian tubules are excretory organs projecting out from the colon

• question_answer155) Which one of the following correctly explains the function of a specific part of a human nephron?

A)
Henle's loop    ? most reabsoroption of the major substances from the glomerular filtrate

B)
Distal convoluted? reabsorprtion of ions into tubule the surrounding blood capillaries

C)
Afferent arteriole ? carries the blood away from the glomerulus towards renal vein

D)
Podocytes       ? create minute spaces (slit pores) for the filtration of blood into the Bowman's capsule

• question_answer156) What will you look for to identity the sex of the following?

A)
Male frog                            ? a copulatory pad on the first digit of the hind limb

B)
Female cock-                     ? anal cerci roach

C)
Male shark                          ? claspers borne on pelvic fins

D)
Female Ascaris                 ? sharply curved posterior end

• question_answer157) Select the correct option with respect to mitosis.

A)
Chromatids start moving towards opposite poles in telophase

B)
Golgi complex and endoplasmic reticulum are still visible at the end of prophase

C)
Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase

D)
Chromatids separate but remains in the centre of the cell in anaphase

• question_answer158) A collection of plants and seeds having diverse alleles of all the genes of a crop is called

A)
germplasm

B)
gene library

C)
genome

D)
herbarium

• question_answer159) The correct floral formula of chilli is

A)

B)

C)

D)

• question_answer160) The most common substrate used in distilleries for the production of ethanol is

A)
soya meal

B)
ground gram

C)
molasses

D)
corn meal

• question_answer161) Of the total incident solar radiation the proportion of PAR is

A)

B)
less than 50%

C)
more than 80%

D)

• question_answer162) Which one of the following elements in plants is not remobilised?

A)
Calcium

B)
Potassium

C)
Sulphur

D)
Phosphorus

• question_answer163) Ethanol is commercially produced through a particular species of

A)
Clostridium

B)
Trichoderma

C)
Asperyllus

D)
Saccharomyces

• question_answer164) A large proportion of oxygen is left unsused in the human blood even after its uptake by the body tissues. This ${{O}_{2}}$

A)
raises the ${{p}_{C{{O}_{2}}}}$of  blood to 75 mm of Hg

B)
is enough to keep pxyhaemoglobin

C)
helps in relasing more ${{O}_{2}}$ to the epithelial tissues

D)
acts as a reserve during muscular exercise

• question_answer165) Which one of the following is categorised as a parasite in true sense?

A)
Human foetus developing inside the uterus draws nourishment from the mother

B)
Head louse living on the human scalp as well as laying eggs on human hair

C)
The cuckoo (koel) lays its eggs in crow's nest

D)
The female Anopheles bites and sucks blood from humans

• question_answer166) At which stage of HIV infection does one usually shows symptoms of AIDS?

A)
When viral DNA is produced by reverse transcriptase

B)
When HIV replicates rapidly in helper T-lymphocytes and damages large number of these

C)
With 15 days of sexual contact with an infected person

D)
When the infecting retrovirus enters host cells

• question_answer167) Which one of the following statements is wrong in case Bhopal gas tragedy?

A)
Thousands of human beings died

B)

C)
It took place in the night of December 2/3, 1984

D)
Methyl isocyanate gas leakage took place

A)
all tissues except epidermis and vascular bundles

B)
epidermis and cortex

C)
all tissues internal to endodermis

D)
all tissuses external to endodermis

• question_answer169) The figure given below depicts a diagrammatic sectional view of the female reproductive system of humans. Which one set of three parts out of A-F have been correctly identified?

A)
C-Infundibulum, D-Fimbriae, E-Cervix

B)
D-Oviducal runnel, E-Uterus, F-Cervix

C)
A-Perimeo-ium, B-Myometrium, C-Pallopian tube

D)
B-Endometrium, C-Infundibulum, D-Fimbriae

• question_answer170) Eutrophication is often seen in

A)
fresh water lakes

B)
ocean

C)
mountains

D)
deserts

• question_answer171) Flowers are zygomorphic in

A)
gulmohur

B)
tomato

C)
datura

D)
mustard

• question_answer172) A drupe develope in

A)
wheat

B)
pea

C)
tomato

D)
mango,

• question_answer173) Which one of the following also acts as a catalyst in a bacterial cell?

A)
sn RNA

B)
hn RNA

C)
23 S rRNA

D)
5 S Rrna

• question_answer174) What was the most significant trend in the evolution of modem man (Homo sapiens) from his ancestors?

A)
Shortening of jaws

B)
Binocular vision

C)
Increasing brain capacity

D)
Upright posture

• question_answer175) In eubacteria, a cellular component that resembles eukaryotic cells is

A)
nucleus

B)
ribosomes

C)
cell wall

D)
plasma membrane

• question_answer176) In which one of the following the genus name, its two characters and its class/phylum are correctly matched?

A)
Genus                                   Two characters                                                 Class/phylum Salaman dra                       (i) A tympanum represents hair                Amphibia

B)
Pteropus                             (i) Skin possesses hair                                    Mammalia

C)
(ii) Oviparous                 Aurelia                                  (i) Cnidoblas                                                       Coelenterata (ii) Organ level of organization

D)
Ascaris                                  (i) Body segmented                                        Annelida (ii) Males and Females distinct

• question_answer177) Which one of the following animals is correctly mathed with its particular named taxonomic category?

A)
Cuttlefish            ? Mollusca, a class

B)
Humans        ? Primata, the family

C)
Housefly       ? Musca, an order

D)
Tiger             ? tigris, the species

• question_answer178) Mutations can be induced with

A)
IAA

B)
ethylene

C)

D)

• question_answer179) In land plants, the guard cells differ from other epidermal cells in having

A)
mitochondria

B)
enddplasmic reticulum

C)
chloroplasts

D)
cytoskeleton

• question_answer180) Wind pollination is common in

A)
lilies

B)
grasses

C)
orchids

D)
legumes

• question_answer181) Which one of the following is not a part of a renal pyramid?

A)
Convoluted tubules

B)
Collecting ducts

C)
Loops Henie

D)
Peritubular capillaries

• question_answer182) 'Himgiri' developed by hybridisation and selection for disease resistance against rust pathogens is a variety of

A)
maize

B)
sugarcane

C)
wheat

D)
chilli

• question_answer183) Which one of the following groups of animals is" correctly matched with its one characteristic feature without even a single exception?

A)
Chordata      ?possess a mouth provided with an upper and a lower Jaw

B)
Chondrichthyes?possess cartilaginous endoskeleton

C)
Mammalia    ? give birth to young ones

D)
Reptilia       ?possess 3-chambered heart with one incompletely divided ventricle

• question_answer184) Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?

A)
Tears

B)
Monocytes

C)
Skin

D)
Epithelium of urogenital tract

• question_answer185) When a neuron is an resting state, ie, not conducting any impulse, the axonal membrane is

A)
equally permeable to both $N{{a}^{+}}$ and ${{K}^{+}}$ ions

B)
impermeable to both $N{{a}^{+}}$ and ${{K}^{+}}$ ions

C)
comparatively more permeable to ${{K}^{+}}$ ions and nearly impermeable to $N{{a}^{+}}$ ions

D)
comparatively more permeable to $N{{a}^{+}}$ ions and nearly impermeable to ${{K}^{+}}$ions

• question_answer186) Nucellar polyembryony is reported in species of

A)
Gossypium

B)
Triticum

C)
Brassica

D)
Citrus

• question_answer187) Peptide synthesis inside a cell takes place in

A)
mitochondria

B)
chromoplast

C)
ribosomes

D)
chloroplast

• question_answer188) When two unrelated individuals or lines are crossed, the performance of ${{F}_{1}}$ hybrid is often superior to, both its parents. This phenomenon is called

A)
transformation

B)
splicing

C)
metamorphosis

D)
heterosis

• question_answer189) The cork cambium, cork and secondary cortex are collectively called

A)
phellogen

B)
periderm

C)
phellem

D)
phelloderm

• question_answer190) The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) What do the two axises (X and Y) represent?

A)
X-axis                                    Y-axis temperature                                      ? enzyme activity

B)
substrate concentration               ? enzymatic activity

C)
enzymatic activity                            ? temperature

D)
enzymatic activity                            ? pH

• question_answer191) Uricotelic mode of passing out nitrogenous wastes is found in

A)
birds and annelids

B)
amphibians and reptiles

C)
insects and amphibians

D)
reptiles and birds

• question_answer192) The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for

A)
escaping any possible compression by the visceral organs

B)
providing more space for/the growth of epididymis

C)
providing a secondary sexual feature for exhibiting the male sex

D)
maintaining the scrotal temperature lower than the internal body temperature

• question_answer193) An organism used as a biofertilizer for raising soyabean crop is

A)
Azospirillum

B)
Rhizobium

C)
Nostoc

D)
Azotobacter

• question_answer194) Which one of the following is wrongly matched?

A)
Puccinia                                ? Smut

B)
Root                                      ? Exarch protoxylem

C)
Cassia                                    ? Imbricate aestivation

D)
Root pressure                   ? Guttation

• question_answer195) In which one of the following pollination is autogamous?

A)
Xenogamy

B)
Chasmogamy

C)
Cleistogamy

D)
Geitonogamy

• question_answer196) The ovary is half inferior in flowers of

A)
cucumber

B)
cotton

C)
guava

D)
peach

• question_answer197) Which one of the following statements is correct with respect to kidney function regulation?

A)
Exposure to cold temperature stimulates ADH release

B)
An increase in glomerular blood flow stimulates formation of angiotensin II

C)
During summer when body loses lot of water by evaporation, the release of ADH is suppressed

D)
When someone drinks lot of water ADH release is supposed

• question_answer198) Archegoniophore is present in

A)
Chara

B)

C)
Furiaria

D)
Marchantia

• question_answer199) Where will you look for the sporozoites of the malarial parasite?

A)
Red blood corpuscles of humans suffering from malaria

B)
Spleen of infected humans

C)
Salivary glands of freshly moulted female Anopheles mosquito

D)
Saliva of infected female Anopheles mosquito

• question_answer200) A prokaryofic autotrophic nitrogen fixing symbiont is found in

A)
Cycas

B)
Cicer

C)
Pisum

D)
Ainus