Solved papers for VMMC VMMC Medical Solved Paper-2007

VMMC Medical Solved Paper-2007 Total Questions - 200

1) In a system of units, the units of mass, length and time are 1 quintal, 1 km and 1 h respectively. In this system 1 N force will be equal to

A)

1 new unit

B)

129.6 new unit

C)

125.7 new unit

D)

\[{{10}^{3}}\,\]new unit

View Answer
2) If\[\left| \mathbf{\vec{A}}\times \left. {\mathbf{\vec{B}}} \right| \right.=\sqrt{3}\mathbf{\vec{A}}.\mathbf{\vec{B}}\], then the value of\[\left| \mathbf{\vec{A}}+\left. {\mathbf{\vec{B}}} \right| \right.\]is

A)

\[{{({{A}^{2}}+{{B}^{2}}+AB)}^{{1}/{2}\;}}\]

B)

       \[{{\left( {{A}^{2}}+{{B}^{2}}+\frac{AB}{\sqrt{3}} \right)}^{{1}/{2}\;}}\]

C)

A + B

D)

       \[{{({{A}^{2}}+{{B}^{2}}+\sqrt{3}AB)}^{{1}/{2}\;}}\]

View Answer
3) If the first one-third of a journey is travelled at20 km/h, next one-third at 40 km/h and the last one-third at 60 km/h. The average speed of whole journey will be

A)

32.7 km/h

B)

                       35 km/h

C)

       40 km/h

D)

       45 km/h

View Answer
4) The value of acceleration due to gravity g at distance r from earths centre such that r < R depend on r according to relation (R = radius of earth)

A)

\[g\propto \,\frac{1}{{{r}^{2}}}\]

B)

                       \[g\propto \,\frac{1}{r}\]

C)

\[g\propto \,\,r\]

D)

       \[g\propto \,\,{{r}^{2}}\]

View Answer
5) A stone tied at one end of a long string is rotated in a vertical circle about the other end. The minimum speed of the stone at the lowest point so, as to complete the circular path will be

A)

\[\sqrt{gr}\]

B)

       \[\sqrt{2gr}\]

C)

\[\sqrt{3gr}\]

D)

       \[\sqrt{5gr}\]

View Answer
6) When a body of mass M is hung from a spring, the spring extends by 1 cm. If the body of mass 2 M be hung from the same spring, the extension of spring will be

A)

1 cm

B)

       2 cm

C)

0.5 cm

D)

       4 cm

View Answer
7) A particle executes SHM               of amplitude A. If \[{{T}_{1}}\] and \[{{T}_{2}}\] are the times taken by the particle to traverse from 0 to\[\frac{A}{2}\]and from \[\frac{A}{2}\]to A respectively, then\[\frac{{{T}_{1}}}{{{T}_{2}}}\] will be equal to

A)

1

B)

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

C)

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

D)

\[2\]

View Answer
8) A circular disc of mass M and radius R is rotating with an angular velocity to about an axis passing through its centre and perpendicular to the plane of the disc. A small point like part of mass m detaches from the rim of the disc and continues to move with same angular speed. The angular velocity of remaining disc just after detaching will become

A)

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

B)

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

C)

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

D)

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

View Answer
9) The distance between the successive nodes is

A)

\[\frac{\lambda }{4}\]

B)

                       \[\frac{\lambda }{2}\]

C)

\[\lambda \]

D)

       \[2\lambda \]

View Answer
10) Dopplers effect in sound takes place when source and observer arc

A)

stationary

B)

moving with same velocity

C)

in relative motion

D)

none of the above

View Answer
11) The tension in vibrating streched piano wire is 10 N. To double the frequency, the tension in wire must be

A)

5 N

B)

                       20 N

C)

40 N

D)

       80 N

View Answer
12) The frequency of vibrating air column in closed organ pipe is n. If its length be doubled and radius halved, its frequency will be nearly

A)

n

B)

                       n/2

C)

2 n

D)

       4 n

View Answer
13) The triple point of water               is

A)

\[273.16{}^\circ C\]

B)

                       \[273.16\text{ }K\]

C)

\[273.16{}^\circ F\]

D)

       \[0.15\text{ }K\]

View Answer
14) The graph of pressure P and \[\left( \frac{1}{Volume,(V)} \right)\]of1 mole of an ideal gas at constant temperature is

A)

B)

C)

D)

View Answer
15) 300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. Taking \[g=10\,m/{{s}^{2}},\] the work done against friction is

A)

200 J

B)

       100 J

C)

zero

D)

       1000 J

View Answer
16) In producing chlorine through electrolysis 100 W power at 125 V is being consumed. How much chlorine per min is liberated? Electro chemical equivalent of chlorine is \[0.367\,\times {{10}^{-6}}\,kg/C\].

A)

17.6mg

B)

21.3 mg

C)

24.3mg

D)

13.6 mg

View Answer
17) A transistor is operated in common emitter configuration at constant collector voltage \[{{V}_{C}}=1.5\,V\] such that a change in the base current from 100\[\mu A\] to 150\[\mu A\] produces a change in the collector current from 5 mA to 10 mA. The current gain (\[\beta \]) is

A)

67

B)

                       75

C)

100

D)

       50

View Answer
18)  If\[{{C}_{p}}\to {{C}_{v}}\]are molar heats at constant pressure and constant volume respectively and R is gas constant for 1 mole, then the correct relation is

A)

\[{{C}_{p}}-{{C}_{v}}=R\]

B)

       \[{{C}_{p}}-{{C}_{v}}<R\]

C)

       \[{{C}_{p}}-{{C}_{v}}>R\]

D)

       \[{{C}_{p}}-{{C}_{v}}=0\]

View Answer
19) The temperature of sink of a Carnot engine is 27°C. If the efficiency of engine be 25%, then the temperature of source must be

A)

\[27{}^\circ C\]

B)

                       \[127{}^\circ C\]

C)

\[227{}^\circ C\]

D)

       \[327{}^\circ C\]

View Answer
20) The temperatures of cold and hot junctions of a thermocouple are 0° and T°C respectively. The thermo emf produced is \[E=AT-\frac{1}{2}B{{T}^{2}}\] If A = 16, B = 0.08, the temperature of inversion will be

A)

\[100{}^\circ C\]

B)

       \[300{}^\circ C\]

C)

\[400{}^\circ C\]

D)

       \[500{}^\circ C\]

View Answer
21) A laser beam is coherent because it contains

A)

waves of several wavelengths

B)

incoherent waves of a single wavelength

C)

coherent waves of several wavelength

D)

coherent waves a single wavelength

View Answer
22) When ordinary light is made incident on a quarter wave plate, the emergent light is

A)

linearly polarized

B)

circularly polarized

C)

ellipticallypolarized

D)

unpolarised

View Answer
23) An object is placed at a distance of 0.5 m in front of a plane mirror. The distance between object and image will be

A)

0.25 m

B)

       0.5 m

C)

1.0 m

D)

       2.0 m

View Answer
24) When a ray of light enters from one medium to another, its velocity is doubled. The critical angle for the ray for total internal reflection will be

A)

\[30{}^\circ \]

B)

\[60{}^\circ \]

C)

\[90{}^\circ \]

D)

information is incomplete

View Answer
25) Application of a forward bias to a p- n junction

A)

increases the number of donors on the n-side

B)

increases the electric field in the depletion zone

C)

increases the potential difference across the depletion zone

D)

widens the depletion zone

View Answer
26) The dimensional formula for emf e in MKS system will be

A)

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

B)

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

C)

       \[\left[ M{{L}^{-2}}{{Q}^{-1}} \right]\]

D)

       \[[ML{{T}^{-2}}\,{{Q}^{-2}}]\]

View Answer
27) The ratio of masses of three wires is 1 : 2 : 3 and that of their lengths is 3 : 2 : 1. If the wires are made of same material, the ratio of their resistances will be

A)

1 : 1 : 1

B)

                       1 : 2 : 3

C)

       9 : 4 : 1

D)

       27 : 6 : 1

View Answer
28) Two dielectrics of dielectric constants \[{{K}_{1}}\] and \[{{K}_{2}}\] are filled in the gap of parallel plate capacitor as shown in figure. The capacitor has plate each of area A and separation d. The capacitance of the capacitor is

A)

\[\frac{{{\varepsilon }_{0}}({{k}_{1}}+{{k}_{2}})}{2d}\]

B)

\[\frac{{{\varepsilon }_{0}}A}{2d}\left( \frac{({{k}_{1}}+{{k}_{2}})}{{{k}_{1}}{{k}_{2}}} \right)\]

C)

       \[\frac{{{\varepsilon }_{0}}A}{d}\left( \frac{({{k}_{1}}{{k}_{2}})}{{{k}_{1}}+{{k}_{2}}} \right)\]

D)

       \[\frac{2{{\varepsilon }_{0}}A}{d}\left( \frac{({{k}_{1}}{{k}_{2}})}{{{k}_{1}}+{{k}_{2}}} \right)\]

View Answer
29) For coulomb force to be operative the least side of atom will be

A)

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

B)

                       \[{{10}^{-15}}m\]

C)

                       \[{{10}^{-10}}m\]

D)

       \[{{10}^{-8}}m\]

View Answer
30) Two batteries of emf 4 V and 8 V with internal resistances 1\[\Omega \] and 2\[\Omega \] respectively are connected to an external resistance R = 9 \[\Omega \] as shown in figure. The current in circuit and the potential difference between P and Q respectively will be

A)

\[\frac{1}{9}A,9V\]

B)

       \[\frac{1}{12}A,12V\]

C)

       \[\frac{1}{3}A,3V\]

D)

       \[\frac{1}{6}A,4V\]

View Answer
31) The currents and voltage in AC circuit are given by \[I=5\sin \left( 100t-\frac{\pi }{2} \right)A,\]V = 200 sin (1001) volt. The power dissipated in the circuit will be

A)

20 W

B)

                       40 W

C)

       1000 W

D)

       zero

View Answer
32) Cathode rays are passed between the poles of a magnet as shown in figure. The effect of magnetic field is

A)

to increase velocity of rays

B)

to deflect the rays towards S-pole

C)

to deflect the rays towards N-pole

D)

to deflect the rays perpendicular to the plane of paper, upwards

View Answer
33) The universal property among all substances is

A)

diamagnetism

B)

       paramagnetism

C)

       ferromagnetism

D)

       non-magnetism

View Answer
34) The similar magnets of magnetic moments \[{{M}_{1}}\] and \[{{M}_{2}}\] are taken and vibrate in a vibration magnetometer with their (i) like poles together (ii) unlike poles together. If the ratio of the time periods is\[\frac{1}{2}\], then the ration of \[{{M}_{1}}\]and \[{{M}_{2}}\left( ie,\frac{{{M}_{1}}}{{{M}_{2}}} \right)\]

A)

0.5

B)

       2

C)

       \[\frac{5}{3}\]

D)

       \[\frac{1}{3}\]

View Answer
35) Copper has face-centered cubic \[(fcc)\] lattice with interatomic spacing equal to 2.54 \[\overset{0}{\mathop{A}}\,\]. The value of lattice constant for this lattice is

A)

1.27\[\overset{0}{\mathop{A}}\,\]

B)

       5.08 \[\overset{0}{\mathop{A}}\,\]

C)

2.54\[\overset{0}{\mathop{A}}\,\]

D)

       3.59 \[\overset{0}{\mathop{A}}\,\]

View Answer
36) The magnet in figure rotates as shown on a pivot through its centre. At the instant shown, what are the directions of the induced current?

A)

A to B and C to D

B)

       B to A and C to D

C)

       A to B and D to C

D)

       B to A and D to C

View Answer
37) The emissive power of a black body, is proportional to (T = absolute temperature)

A)

\[E\propto {{T}^{0}}\]

B)

\[E\propto {{T}^{2}}\]

C)

\[E\propto {{T}^{4}}\]

D)

\[E\propto {{T}^{5}}\]

View Answer
38) Two identical metallic balls, whose temperatures are \[200{}^\circ C\] and \[400{}^\circ C\]respectively, are placed in an enclosure at \[27{}^\circ C\]. The ratio of heat-loss of the balls will be

A)

1 : 2

B)

1 : 4

C)

\[\frac{{{(473)}^{4}}-{{(300)}^{4}}}{{{(673)}^{3}}-{{(300)}^{4}}}\]

D)

\[\frac{{{(200)}^{4}}-{{(27)}^{4}}}{{{(400)}^{3}}-{{(27)}^{4}}}\]

View Answer
39) The energy of X-ray photons coming out of coolidge tube depends on

A)

kinetic energy of incident electrons

B)

intensity of incident electrons

C)

both (a) and (b)

D)

neither (a) nor (b)

View Answer
40) When high energetic cathode rays strike a heavy target of high melting point, then the rays produced are

A)

X-rays

B)

                       y-rays

C)

x-rays

D)

       p-rays

View Answer
41) An X-ray tube is operated at 50 kV. The minimum wavelength of X-rays produced is

A)

0.25\[\overset{0}{\mathop{A}}\,\]

B)

                       0.5\[\overset{0}{\mathop{A}}\,\]

C)

2.5\[\overset{0}{\mathop{A}}\,\]

D)

       1\[\overset{0}{\mathop{A}}\,\]

View Answer
42) When a triode valve is used as an amplifier the phase difference between input and output voltages is

A)

zero

B)

                       \[\frac{\pi }{4}\]

C)

\[\frac{\pi }{2}\]

D)

       \[\pi \]

View Answer
43) A point source of light is placed at a distance of 0.5 m from a caesium photocell and under saturation conditions the number of emitted photoelectrons is n. If the source is now placed 1 m from the cell, the number of emitted electrons will be

A)

2n

B)

                       n

C)

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

D)

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

View Answer
44) The correct graph representing the relation between energy (E) of photoelectrons and frequency (v) of incident light is

A)

B)

C)

D)

View Answer
45) Which of the following is wrongly matched?

A)

Raman effect?scattering of light

B)

Thomson effect?thermoelectricity

C)

Hall effect?work function

D)

Photoelectric effect?quantum nature of light

View Answer
46) Assertion: The periodic time of hard spring is less as compared to that of a soft string. Reason: The periodic time depends upon the spring constant.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
47) Assertion: In a simple battery circuit the point of lowest potential is positive terminal of the battery. Reason: The current flows towards the point of the higher potential as it flows in such a circuit from the negative to the positive terminal.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
48) Assertion: Magnetic field is not associated with a stationary charge. Reason: A magnetic field can be detected by means of its effect on a current carrying conductor.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
49) Assertion: The ratio of time taken for light emission from an atom to that for release of nuclear energy in fission is 1 : 100. Reason: Time taken of the light emission from an atom is of the order of 10 8 s.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
50) Assertion: Endoscopy involves use of optical fibres to study internal organs. Reason: Optical fibres are based on phenomenon of total internal reflection.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
51) Water glass is

A)

\[N{{a}_{2}}Si{{O}_{3}}\]

B)

\[M{{g}_{2}}Si\]

C)

       \[SiC{{l}_{4}}\]

D)

       \[Ca{{({{H}_{2}}P{{O}_{4}})}_{2}}\]

View Answer
52) Nesslers reagent is

A)

\[NaHgC{{l}_{4}}\]

B)

                       \[{{K}_{2}}Hg{{I}_{4}}\]

C)

       \[Hg{{(N{{H}_{3}})}_{2}}Cl\]

D)

       \[{{K}_{2}}Hg{{I}_{4}}+KOH\]

View Answer
53) The process of zinc-plating on iron sheet is known as

A)

annealing

B)

roasting

C)

galvanization

D)

smelting

View Answer
54) Mac Arthur process is used for the extraction of

A)

Au

B)

                       Ag

C)

Cu

D)

       Zn

View Answer
55) The oxygen obtained from 72 kg of water is

A)

72 kg

B)

46 kg

C)

       50 kg

D)

       64 kg

View Answer
56) The correct order of relative acidity is

A)

\[HClO>HCl{{O}_{2}}>HCl{{O}_{3}}>HCl{{O}_{4}}\]

B)

\[HCl{{O}_{4}}>HCl{{O}_{3}}>HCl{{O}_{2}}>HClO\]

C)

\[HClO>HCl{{O}_{4}}>HCl{{O}_{2}}>HCl{{O}_{3}}\]

D)

\[HCl{{O}_{3}}>HCl{{O}_{2}}>HCl{{O}_{4}}>HClO\]

View Answer
57) The oxidation state of \[{{M}^{3+}}\] after removing three electrons is

A)

zero

B)

+3

C)

+6

D)

       -6

View Answer
58) The oil of winter green is

A)

ethyl salicylate

B)

methyl salicylate

C)

benzaldehyde

D)

phenyl salicylate

View Answer
59) The lightest gas is

A)

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

B)

                                       \[Ar\]

C)

\[Rn\]

D)

       He

View Answer
60) The half-life period of radium is 1580 yr. It remains 1/16 after the years

A)

1580 yr

B)

       3160 yr

C)

4740 yr

D)

       6320 yr

View Answer
61) \[_{19}{{K}^{40}}\] and \[{{\,}_{20}}C{{a}^{40}}\] are known as

A)

isotopes

B)

       isobars

C)

       isotones

D)

       Isodiaphers

View Answer
62) The ore of aluminium is

A)

camallite

B)

       malachite

C)

       galena

D)

       bauxite

View Answer
63) The equivalent weight of \[KMn{{O}_{4}}\] in acidic medium is

A)

158

B)

       52.67

C)

       31.6

D)

       49

View Answer
64) The species responsible for nitration is

A)

\[NO_{2}^{+}\]

B)

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

C)

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

D)

       all of these

View Answer
65) A compound (60 g) on analysis produce carbon, hydrogen and oxygen 24 g, 4 g and 32g respectively. The empirical formula is

A)

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

B)

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

C)

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

D)

       \[{{C}_{2}}{{H}_{4}}{{O}_{6}}\]

View Answer
66) The indicator used for the filtration of weak base and strong acid is

A)

thymol blue

B)

       methyl orange

C)

       phenolphthalein

D)

       fluorescein

View Answer
67) The reagent used for Friedel-Crafts reaction is

A)

dry ether

B)

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

C)

anhydrous \[AlC{{l}_{3}}\]

D)

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

View Answer
68) For converting a solution of \[\text{100 mL KCl}\] of 0.4 M concentration into a solution of \[\text{KCl}\,\,\text{0}\text{.05}\,\text{M}\] concentration. The quantity of water added is

A)

900 mL

B)

                      700 mL

C)

       500 mL

D)

       300 mL

View Answer
69) Butter is a colloidal solution of

A)

solid-solid

B)

liquid-solid

C)

       solid-liquid

D)

       gas-solid

View Answer
70) Acetone and chloroform reacts to produce

A)

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

B)

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

C)

\[{{(C{{H}_{3}})}_{2}}C(OH)CC{{l}_{3}}\]

D)

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

View Answer
71) The Claisen condensation reaction is given by

A)

\[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\]

B)

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

C)

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

D)

       \[HCHO\]

View Answer
72) The laboratory method for the preparation of \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\] is by

A)

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

B)

                       \[~N{{H}_{4}}HS{{O}_{4}}\]

C)

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

D)

       all of these

View Answer
73) Picric acid is

A)

trinitrotoluene

B)

      trinitrobenzene

C)

       trinitrophenol

D)

       trinitroaniline

View Answer
74) \[{{\,}_{90}}T{{h}^{232}}\xrightarrow{{}}{{\,}_{82}}P{{b}^{208}}\] The number of \[\alpha \] and \[\beta \] particles emitted during the above reaction is

A)

\[8\alpha \]and \[4\beta \]

B)

       \[8\alpha \]and \[16\,\beta \]

C)

       \[4\alpha \]and \[2\beta \]

D)

       \[6\alpha \]and \[4\beta \]

View Answer
75) The phenomenon of mutation is

A)

chemical change in DNA molecule

B)

production of antibodies

C)

synthesis of macromolecules

D)

invasion of foreign micro-organism

View Answer
76) The \[cis\] and trans isomers are represented by

A)

pent-1-ene

B)

       but-2-ene

C)

       prop-1-ene

D)

       but-1-ene

View Answer
77) Duralumin is an alloy of

A)

\[Al+Mn\]

B)

\[Al+Mg+Ni+Mn\]

C)

\[Al+Mg+Ni\]

D)

\[Al+Mg+Mn+Cu\]

View Answer
78) The incorrect statement for d-block element is

A)

It shows magnetic property

B)

It has variable valency

C)

It has tendency for formation of coloured ions

D)

It has complete d-orbitals

View Answer
79) The hybridisation present in \[\text{I}{{\text{F}}_{\text{3}}}\] is

A)

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

B)

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

C)

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

D)

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

View Answer
80) The IUPAC name of \[C{{H}_{2}}=CH-\underset{C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\]

A)

3-prdpyl pentene-1

B)

3-ethyl penten-1

C)

4-ethyl hexene-1

D)

3-ethyl hexene-1

View Answer
81) The relation of \[\Delta H\] and \[\Delta E\] is represented as

A)

\[\Delta H=\Delta E-P\Delta V\]

B)

\[\Delta E=\Delta H-P\Delta V\]

C)

\[\Delta H=\Delta E+\Delta nRT\]

D)

\[\Delta E=\Delta V+\Delta H\]

View Answer
82) The number of \[\sigma \] and \[\pi \] bonds present in \[CH\equiv C-C{{H}_{2}}-CH=C{{H}_{2}}\]is

A)

\[10\sigma ,3\pi \]

B)

       \[10\sigma ,2\pi \]

C)

\[9\sigma ,3\pi \]

D)

       \[10\sigma ,2\pi \]

View Answer
83) The incorrect statement for 14g of CO is

A)

It occupies 2.24 L at NTP

B)

It corresponds to \[\frac{1}{2}\] mole of CO

C)

It corresponds to same mole of CO and \[{{\text{N}}_{\text{2}}}\]

D)

It corresponds to \[3.01\times {{10}^{23}}\] molecules of CO

View Answer
84) \[N{{H}_{4}}Cl(s)\xrightarrow{{}}N{{H}_{3}}(g)+HCl(g)\] When the above reaction occurs, the entropy

A)

remains same

B)

decreases

C)

       increases

D)

       none of these

View Answer
85) Carbogen is a mixture of

A)

\[C{{O}_{2}}+\text{ }{{N}_{2}}\]

B)

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

C)

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

D)

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

View Answer
86) The carboxylic acid which reduces Tollens reagent is

A)

\[\text{HCOOH}\]

B)

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

C)

\[~C{{H}_{3}}C{{H}_{2}}COOH\]

D)

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

View Answer
87) The dissociation constant of two acids \[\text{H}{{\text{A}}_{\text{1}}}\] and \[\text{H}{{\text{A}}_{2}}\] are \[3.0\times {{10}^{-4}}\] and \[1.8\times {{10}^{-5}}\] respectively. The relative strengths of the acids is

A)

1 : 16

B)

1 : 4

C)

4 : 1

D)

       16 : 1

View Answer
88) The moderator used in nuclear reactor is

A)

TEL

B)

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

C)

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

D)

\[R-O-R\]

View Answer
89) One mole of \[C{{H}_{4}}\]contains

A)

4 g atoms of hydrogen

B)

3.0 g atoms of carbon

C)

\[6.02\times {{10}^{23}}\] atoms of hydrogen

D)

\[1.81\times {{10}^{23}}\] molecules of \[C{{H}_{4}}\]

View Answer
90) The electron affinity of Be is similar to

A)

He

B)

       B

C)

Li

D)

       Na

View Answer
91) The oxidation number of sulphur in \[\text{N}{{\text{a}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{3}}}\] is

A)

+1

B)

       +2

C)

+3

D)

       -3

View Answer
92) The number of double bonds in gammexane is

A)

0

B)

       1

C)

2

D)

       3

View Answer
93) Benzaldehyde is converted to benzyl alcohol by

A)

Wurtz reaction

B)

Cannizaro reaction

C)

Fittig reaction

D)

Wurtz-Fittig reaction

View Answer
94) Sindoor is represented by

A)

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

B)

\[PbC{{O}_{3}}.Pb{{(OH)}_{2}}\]

C)

\[Pb{{(OH)}_{2}}.4PbC{{O}_{3}}\]

D)

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

View Answer
95) The most polar bond is

A)

\[OF\]

B)

       \[NCl\]

C)

       \[NF\]

D)

       \[NN\]

View Answer
96) Assertion: A spectral line will be seen for a \[2{{p}_{x}}-2{{p}_{y}}\] transition. Reason: Energy is released in the form of wave of light when the electron drops from \[2{{p}_{x}}\] to \[2{{p}_{y}}\] orbital.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
97) Assertion: Carboxypeptidase is an exopeptidase Reason: It cleaves the N-terminal bond.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
98) Assertion: Amongst the halogen fluorine can oxidise the elements to highest oxidation state. Reason: Due to small size of fluoride ion. It is difficult to oxidise fluoride ion to fluorine. Hence, reverse reaction takes place more easily.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
99) Assertion: Liquid \[\text{N}{{\text{H}}_{\text{3}}}\] is used for refrigeration. Reason: Liquid \[\text{N}{{\text{H}}_{\text{3}}}\]quickly vaporize.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
100) Assertion: \[\sigma \] is strong while \[\pi \]is a weak bond. Reason: Atoms rotate freely about \[\pi \] bond.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false

View Answer
101) Prokaryotic genetic system has

A)

DNA and histone

B)

DNA and no histone

C)

no DNA and histone

D)

no DNA and no histone

View Answer
102) Law of Mendel which is not completely applicable is

A)

co-dominance

B)

law of segregation

C)

law of independent assortment

D)

law of dominance

View Answer
103) Structural unit of human kidney is

A)

nephron

B)

ureter

C)

loop of Henle

D)

       Bowmans capsule

View Answer
104) In which era life was absent ?

A)

Archeozoic

B)

Paleozoic

C)

       Proterozoic

D)

       Azoic

View Answer
105) Net gain of ATP in prokaryotes from a molecule of glucose when oxidized is

A)

40

B)

38

C)

36

D)

       34

View Answer
106) Sub-divisions in cell cycle are

A)

\[S,\,{{G}_{2}},\,M\] and \[{{G}_{1}}\]

B)

       \[{{G}_{1}},\,S,\,{{G}_{2}}\] and M

C)

       \[S,\,M,\,{{G}_{1}}\] and \[{{G}_{1}}\]

D)

       \[{{G}_{2}},\,{{G}_{1}},\,M\] and S

View Answer
107) Legume plants are important for atmosphere because they

A)

help in \[N{{O}_{2}}\] fixation

B)

do not help in \[N{{O}_{2}}\] fixation

C)

increase soil fertility

D)

all of the above

View Answer
108) Aquatic photo diffraction is

A)

euphoric, disphotic and aphotic

B)

aphotic, euphoric and disphotic

C)

euphoric, aphotic and disphotic

D)

euphotic, disphotic and aphotic

View Answer
109) Community is

A)

a group of independent and interacting population of different species

B)

a group of independent and interacting population of same species

C)

a group of independent and interacting population of same species in a specific area

D)

a group of independent and interacting population of different species in a specific area

View Answer
110) Abiogenesis is the

A)

origin of life from non-living organism

B)

origin of life from living organism

C)

origin of viruses and microbes

D)

spontaneous generation

View Answer
111) Which one of the following couple were suggested by doctors to not have more than one child ?

A)

\[R{{h}^{+}}\] male and \[R{{h}^{-}}\] female

B)

\[R{{h}^{-}}\] male and \[R{{h}^{+}}\] female

C)

\[R{{h}^{+}}\] male and \[R{{h}^{+}}\] female

D)

\[R{{h}^{-}}\] male and \[R{{h}^{+}}\] female

View Answer
112) First evidence of ceremonial burial of dead body and belief in religion have been found with fossil of

A)

Neanderthal

B)

       Cro-magnon

C)

Homo erectus

D)

       Homo habilis

View Answer
113) Pollution is not caused by

A)

thermal power plant

B)

Automobile

C)

radioactive power plant

D)

hydroelectric power plant

View Answer
114) Peacock eats a snake and snake eats frog and frog eats insect while insect eats green plant, then position of peacock is

A)

primary producer

B)

secondary producer

C)

Decomposer

D)

top at the apex of food pyramid

View Answer
115) According to one of the most accepted theory, the earth atmosphere before any life had originated consisted of \[{{H}_{2}}O,\,{{H}_{2}},\,N{{H}_{2}}\] and

A)

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

B)

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

C)

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

D)

       none of these

View Answer
116) Tropical dense forests are due to

A)

low rainfall and low temperature

B)

high rainfall and low temperature

C)

low rainfall and high temperature

D)

high rainfall and high temperature

View Answer
117) Term ecosystem was given by

A)

Odum

B)

Koestler

C)

Tansley

D)

       Mobius and Forbes

View Answer
118) Acoustic spots in frog are present in

A)

ossious labyrinth

B)

Carotid

C)

membranous labyrinth

D)

all of the above

View Answer
119) Minimum regeneration power is present in

A)

nervous tissue

B)

connective tissue

C)

epithelial tissue

D)

       none of the above

View Answer
120) Down syndrome is due to

A)

chromosome number increase in 21st pair autosome

B)

chromosome number decrease in 21st pair autosome

C)

chromosome number increase in 18th pair autosome

D)

chromosome number decrease in 18th pair autosome

View Answer
121) Opening of flower is an example of

A)

spontaneous movement

B)

hyponastic movement

C)

epinastic movement

D)

cleistogamous movement

View Answer
122) 5th June is celebrated as

A)

world forest day

B)

world environment day

C)

world red cross day

D)

world food day

View Answer
123) A place was rocky and barren but now there is a green forest; the sequence of origin is

A)

lichen, moss, herbs, shrubs

B)

moss, lichen, herbs, shrubs

C)

lichen, moss, shrubs, herbs

D)

shrubs, herbs, moss, lichen

View Answer
124) Plasmids occur in

A)

viruses

B)

chromosomes

C)

       bacteria

D)

       chloroplasts

View Answer
125) Alleles are

A)

alternate forms of a gene

B)

homologous chromosome

C)

pair of sex chromosome

D)

none of the above

View Answer
126) Genetic recombination is due to

A)

fertilization and meiosis

B)

mitosis and meiosis

C)

fertilization and mitosis

D)

none of the above

View Answer
127) Ribosome may also be called

A)

microsome

B)

dictyosome

C)

       ribonucleo protein

D)

       oxysomes

View Answer
128) Quiescent centre is present in

A)

shoot apex

B)

root apex

C)

both (a) and (b)

D)

       meristematic tissue

View Answer
129) Structure of nuclear membrane helps in

A)

organisation of the spindle

B)

synapsis of homologous chromosome

C)

nucleo-cytoplasmic exchange of material

D)

anaphasic separation of daughter chromosome

View Answer
130) Micro-nutrients are

A)

as important as macro-nutrient but are required in small amount

B)

less important than macro-nutrient

C)

called micro as they play only a minor role in plant nutrition

D)

none of the above

View Answer
131) Colour blindness is due to

A)

recessive female chromosome

B)

dominant female chromosome

C)

recessive male chromosome

D)

dominant male chromosome

View Answer
132) Darwins book ?Origin of New Species by Natural Selection? was published in

A)

1809

B)

       1859

C)

1857

D)

       1869

View Answer
133) Which one of the following pair is correctly matched ?

A)

Aed.es         -           Plague

B)

Anopheles          -            Malaria

C)

House fly            -           Yellow fever

D)

Body louse          -           Typhoid

View Answer
134) Mosses occurs in moist place because

A)

they can not grow on land

B)

their gamete fuse in water

C)

they lack vascular tissue

D)

they lack root and stomata

View Answer
135) During photosynthesis

A)

\[{{O}_{2}}\] evolved comes from \[C{{O}_{2}}\]

B)

ATP is formed

C)

ATP is not formed

D)

Water is required as medium but it does not take part in photosynthesis

View Answer
136) Smallest plant which contain green pigment such as higher green plant is

A)

Schizomycetes

B)

Rhodophyceae

C)

       Chlorophyceae

D)

       Phaeophyceae

View Answer
137) Quantasomes are found in

A)

mitochondria

B)

chloroplast

C)

lysosome

D)

       endoplasmic reticulum

View Answer
138) Barr body is associated with

A)

sex chromosome of female

B)

sex chromosome of male

C)

autosome of female

D)

autosome of male

View Answer
139) Endosperm of angiospermic plant is

A)

triploid

B)

       diploid

C)

haploid

D)

       tetraploid

View Answer
140) Source of energy in an ecosystem is

A)

Sun

B)

       ATP

C)

       sugar made by plant

D)

green plant

View Answer
141) Pyramid of energy is always

A)

Upright

B)

Downward

C)

upright in pond and downward in forest

D)

upright in forest and downward in pond

View Answer
142) Effect of pollution is first marked on

A)

micro-organisms

B)

green vegetation of an area

C)

food crop

D)

none of the above

View Answer
143) Pseudocoelom is the characteristic of

A)

Annelida

B)

Echinodermata

C)

       Mollusca

D)

       Nematoda

View Answer
144) Forests of nephridia are present in

A)

pharyngeal region

B)

       clitellar region

C)

anal region

D)

       none of the above

View Answer
145) Golgi body originates from

A)

Lysosome

B)

endoplasmic reticulum

C)

Mitochondria

D)

cell membrane

View Answer
146) Term basal body is associated with the development of

A)

cilia and flagella

B)

cell plate

C)

       phragmoplast

D)

       kinetochore

View Answer
147) Heart of elephant is

A)

neurogenic

B)

       myogenic

C)

both (a) and (b)

D)

       none of these

View Answer
148) Ciliated epithelium is present in

A)

trachea

B)

ureter

C)

intestine

D)

       nasal chamber

View Answer
149) Deltoid ridge is present in

A)

humerus

B)

       tibia-fibula

C)

radio-ulna

D)

       femur

View Answer
150) One haemoglobin carries how many molecules of \[{{O}_{2}}\]?

A)

4

B)

       2

C)

       6

D)

       8

View Answer
151) Pulp cavity of teeth is lined by

A)

odontoblast

B)

chondroblast

C)

       osteoblast

D)

       amyloblast

View Answer
152) Which of the following is not a source of vitamin-A?

A)

Carrot

B)

       Mango

C)

Apple

D)

       Yeast

View Answer
153) Cycas revoluta is popularly known as

A)

date palm

B)

sago palm

C)

       sea palm

D)

       royal palm

View Answer
154) Circinate vernation is present in

A)

moss

B)

       fern

C)

algae

D)

       gymnosperm

View Answer
155) Wilting of plant is because

A)

xylem is blocked

B)

phloem is blocked

C)

epidermis and few roots are removed

D)

pith is removed

View Answer
156) Auxanometer is used to detect

A)

respiration

B)

       transpiration

C)

                       plant movement

D)

growth

View Answer
157) Separation of amino acid and carboxylic groups is called

A)

deamination

B)

       excretion

C)

egestion

D)

       transamination

View Answer
158) Pelvic girdle of rabbit consists of

A)

ileum, ischium and pubis

B)

ileum, ischium and coracoids

C)

coracoid, scapula and clavicle

D)

ileum, coracoid and scapula

View Answer
159) Cuticle is secreted by

A)

epidermis

B)

       endodermis

C)

both (a) and (b)

D)

       hypodermis

View Answer
160) Smallest bacteria is

A)

Spirillum

B)

       Bacillus

C)

Dialister

D)

None of these

View Answer
161) Root hair absorb water from the soil on account of

A)

turgor pressure

B)

osmotic pressure

C)

       suction pressure

D)

       root pressure

View Answer
162) Difference between bone and cartilage is

A)

Haversian canal

B)

       blood vessel

C)

       lymph vessel

D)

       all of these

View Answer
163) Function of mitochondria is

A)

excretion

B)

respiration

C)

digestion

D)

       excretion and respiration

View Answer
164) Hydrolytic enzymes are stored in

A)

Golgi bodies

B)

       lysosomes

C)

       endoplasmic reticulum

D)

mitochondria

View Answer
165) Lipid molecules in plasma membrane are arranged in which manner ?

A)

Scattered

B)

       Series

C)

Alternate

D)

       Head parallel

View Answer
166) Secretion of gastric juice is controlled by

A)

gastrin

B)

       cholecystokinin

C)

enterogastrin

D)

       none of these

View Answer
167) Meissner corpuscles are responsible for

A)

heat and present in skin

B)

cold and present in skin

C)

pressure and present in skin

D)

pain and present in skin

View Answer
168) Taj Mahal marble is affected by

A)

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

B)

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

C)

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

D)

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

View Answer
169) Minimata disease first occurred in

A)

Japan

B)

China

C)

Korea

D)

       Russia

View Answer
170) Sexual reproduction leads to

A)

genetic recombination

B)

polyploidy

C)

aneuploidy

D)

       euploidy

View Answer
171) Parathormone is secreted during

A)

increased blood calcium level

B)

decreased blood calcium level

C)

increased blood sugar level

D)

decreased blood sugar level

View Answer
172) Which of the following is purely motor cranial nerve?

A)

Olfactory

B)

       Optic

C)

Abducens

D)

       Vagus

View Answer
173) Which of the following soil is transported by air ?

A)

Alluvial

B)

Aerial

C)

Eolian

D)

       Glacial

View Answer
174) Plants growing in dry and saline soil are called

A)

xerophyte

B)

hydrophyte

C)

       halophyte

D)

       heliophyte

View Answer
175) Which one of the following is well-developed present in hydrophyte ?

A)

Aerenchyma

B)

Collenchyma

C)

       Stomata

D)

       Root system

View Answer
176) Largest smooth muscle is present in

A)

leg

B)

thigh

C)

uterus of pregnant woman

D)

urethra

View Answer
177) Respiratory centre is present in

A)

cerebellum

B)

       cerebrum

C)

medulla oblongata

D)

hypothalamus

View Answer
178) Kala-azar is caused by

A)

Trypanosoma cruzi

B)

Leishmania donovani

C)

Trypanosoma brucei

D)

Trypanosoma gambeinse

View Answer
179) Recapitulation theory was proposed by

A)

E. Haeckel

B)

Mendel

C)

Hugo de Vries

D)

       von Baer

View Answer
180) Pseudocoelom developed from

A)

embryonic mesoderm

B)

archenteron

C)

blastocoels

D)

       blastopore lip

View Answer
181) Study of environment and animal relation is

A)

ecosystem

B)

Phytosociology

C)

biotic community

D)

Ecology

View Answer
182) A root was described as it adventitious root because

A)

arose from plumule

B)

was used variously for storage of food

C)

was swollen

D)

was growing in marshy place

View Answer
183) Terracing is done in

A)

desert areas

B)

hilly areas

C)

       dry areas

D)

       plain areas

View Answer
184) Step of respiration are controlled by

A)

substrates

B)

enzymes

C)

       hormone

D)

       bile juice

View Answer
185) Absorption of \[{{H}_{2}}O\] in DCT is controlled by

A)

ADH

B)

       ACTH

C)

LH

D)

       Oxytocin

View Answer
186) Alary muscle is associated with

A)

heart and circulation

B)

Malpighian tubules and excretion

C)

trachea and respiration

D)

none of the above

View Answer
187) Which of the following is an insect?

A)

Moth

B)

       Mites

C)

Prawn

D)

       Scorpion

View Answer
188) Removal of ring wood of tissue outside the vascular cambium from the tree trunk kills it because

A)

water cannot move up

B)

food does not travel down and root become starved

C)

shoot become starved

D)

annual ring are not produced

View Answer
189) Wisdom teeth in human is

A)

3rd molar and 4 in number

B)

3rd molar and 2 in number

C)

2nd molar and 4 in number

D)

2nd molar and 2 in number

View Answer
190) Choanocyte is the characteristic feature of

A)

sponges

B)

       arthropods

C)

       Annelida

D)

       none of these

View Answer
191) Which one of the following triplet codes, is correctly matched with the specificity for an amino in protein synthesis or as start or stop codon?

A)

UGU-Leucine

B)

       UAC-Tyrosine

C)

UCG-Start

D)

       UUU-Stop

View Answer
192) Tobacco mosaic virus is a tubular filament of size

A)

\[300\times 20\,\,nm\]

B)

       \[700\times 30\,\,nm\]

C)

       \[300\times 10\,\,nm\]

D)

       \[300\times 5\,\,nm\]

View Answer
193) ELISA is used to detect viruses where the key reagent is

A)

DNA probe

B)

       RNAse

C)

       alkaline phosphate

D)

catalase

View Answer
194) During translation initiation in prokaryoetes, a GTP molecules is needed in

A)

association of 30s, mRNA with formyl met tRNA

B)

association of 50s subunit of ribosome with initiation complex

C)

formation of formyl met tRNA

D)

binding of 30s subunit of ribosome with mRNA

View Answer
195) What is true about T-lymphocytes in mammals ?

A)

They scavenge damaged cells and cellular debris

B)

There are produced in thyroid

C)

There are three main types-cytotoxic T-cells, helpes T-cells and suppressor T-cells

D)

These originate in lymphoid tissues.

View Answer
196) Assertion: Prokaryotes reproduce asexually by binary fission. Reason: Because this division produce1 two daughter cells identical to the parent cell

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false.

View Answer
197) Assertion: In sponges, archaeocytes are totipotent. Reason: They give rise to all types of amoebocytes and are self-replicating.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false.

View Answer
198) Assertion: It is advantageous to give the polio vaccines orally. Reason: It prevents reinfection by causing intestinal immunity.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false.

View Answer
199) Assertion: Alcohol acts as sedative. Reason: Sweating is enhanced by alcohol and so it is endothermic.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false.

View Answer
200) Assertion: Supernumerary chromosomes do not usually have any effect on the phenotype and hence, are genetically un-necessary. Reason: In some plants supernumerary chromosomes result in decreased vigour.

A)

If both assertion and reason are true and reason is the correct explanation of assertion

B)

If both assertion and reason are true but reason is not the correct explanation of assertion

C)

If assertion is true but reason is false

D)

If both assertion and reason are false.

View Answer

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