# Solved papers for CET Karnataka Medical CET - Karnataka Medical Solved Paper-2012

### done CET - Karnataka Medical Solved Paper-2012

• question_answer1) Which of the following graphs correctly represents the variation of heat energy $(U)$produced in a metallic conductor in a given time as a function of potential difference $\left( V \right)$ across the conductor?

A)

B)

C)

D)

• question_answer2) A current of 2 A is passing through a metal wire of cross sectional area $2\times {{10}^{-6}}{{m}^{2}}$. If the number density of free electrons in the wire is $5\times {{10}^{26}}{{m}^{-3}}$, the drift speed of electrons is (given $e=1.6\times {{10}^{-19}}C$)

A) $\frac{1}{16}m{{s}^{-1}}$

B) $\frac{1}{40}m{{s}^{-1}}$

C) $\frac{1}{80}m{{s}^{-1}}$

D) $\frac{1}{32}m{{s}^{-1}}$

• question_answer3) Magnetic field at a distance r from an infinitely long straight conductor carrying a steady current varies as

A) $\frac{1}{{{r}^{2}}}$

B) $\frac{1}{r}$

C) $\frac{1}{{{r}^{3}}}$

D) $\frac{1}{\sqrt{r}}$

• question_answer4) In the loop shown, the magnetic induction at the point O is

A) $\frac{{{\mu }_{0}}I}{8}\left( \frac{{{R}_{1}}-{{R}_{2}}}{{{R}_{1}}{{R}_{2}}} \right)$

B) $\frac{{{\mu }_{0}}I}{8}\left( \frac{{{R}_{1}}+{{R}_{2}}}{{{R}_{1}}{{R}_{2}}} \right)$

C) $\frac{{{\mu }_{0}}I}{8}\left( \frac{{{R}_{1}}{{R}_{2}}}{{{R}_{1}}+{{R}_{2}}} \right)$

D) zero

• question_answer5) An a-particle and a proton moving with the same kinetic energy enter a region of uniform magnetic field at right angles to the field. The ratio of the radii of the paths of a-particle to that of the proton is

A) $1:1$

B) $1:2$

C) $1:4$

D) $1:8$

• question_answer6) Direction of current induced in a wire moving in a magnetic field is found using

A) Flemings left-hand rule

B) Flemings right hand rule

C) Amperes rule

D) Right hand clasp rule

• question_answer7) An ideal resistance R, ideal inductance L, ideal capacitance C and AC volt meters ${{V}_{1}},{{V}_{2}},{{V}_{3}}$and ${{V}_{4}}$ are connected to an AC source as shown. At resonance,

A) reading in ${{V}_{3}}$ = reading in ${{V}_{1}}$

B) reading in ${{V}_{1}}$ = reading in ${{V}_{2}}$

C) reading in ${{V}_{2}}$ = reading in ${{V}_{4}}$

D) reading in ${{V}_{2}}$ = reading in ${{V}_{3}}$

• question_answer8) X-rays, gamma rays and microwaves travelling in vacuum have

A) same wavelengths but different velocities

B) same frequency but different velocities

C) Same velocity but different wavelengths

D) Same velocity and same frequency

• question_answer9) If n is the orbit number of the electron in a hydrogen atom, the correct statement among the following is

A) Electron energy increases as n increases.

B) Hydrogen emits infrared rays for the electron transition from $n=\infty$ to $n=1$.

C) Electron energy is zero for $n=1$.

D) Electron energy varies as ${{n}^{2}}$.

• question_answer10) In a Ruby laser, the colour of laser light is due to ............ atom.

A) Oxygen

B) Aluminium

C) Xenon

D) chromium

• question_answer11) The radius of $_{29}C{{u}^{64}}$ nucleus in Fermi is (given ${{R}_{0}}=1.2\times {{10}^{-15}}m$)

A) $4.8$

B) $1.2$

C) $7.7$

D) $9.6$

• question_answer12) In a radioactive decay, an element $_{Z}{{X}^{A}}$ emits four $\alpha$-particles, three $\beta$-particles and eight gamma photons. The atomic number and mass number of the resulting final nucleus are

A) $Z-11,\,A-16$

B) $Z-5,\text{ }A-13$

C) $Z-5,\text{ }A-16$

D) $Z-8,\text{ }A-13$

• question_answer13) For a transistor, $\beta =100$. The value of a is

A) $1.01$

B) $0.99$

C) $100$

D) $0.01$

• question_answer14) The following truth table with A and B as inputs is for ............ gate.

 A B Output 1 0 1 1 1 0 0 1 1 0 0 0

A) AND

B) OR

C) XOR

D) NOR

• question_answer15) n photons of wavelength $\lambda$ are absorbed by a black body of mass m. The momentum gained by the body is

A) $\frac{h}{m\lambda }$

B) $\frac{mnh}{\lambda }$

C) $\frac{nh}{m\lambda }$

D) $\frac{nh}{\lambda }$

• question_answer16) A radioactive nucleus has specific binding energy${{E}_{1}}$. It emits an $\alpha$-particle. The resulting nucleus has specific binding energy${{E}_{2}}$. Then

A) ${{E}_{2}}={{E}_{1}}$

B) ${{E}_{2}}<{{E}_{1}}$

C) ${{E}_{2}}>{{E}_{1}}$

D) ${{E}_{2}}=0$

• question_answer17) The dimensional formula of physical quantity is ${{M}^{a}}{{L}^{b}}{{T}^{c}}$ Then that physical quantity is

A) surface tension if $a=1,\,b=1,\,c=-2$

B) Force if $a=1,\,b=1,\,c=2$

C) Angular frequency if $a=0,\,b=0,\,c=-1$

D) Spring constant if $a=1,\,b=-1,\,c=-2$

• question_answer18) A person throws balls into air vertically upward in regular intervals of time of one second. The next ball is thrown when the velocity of the ball thrown earlier becomes zero. The height to which the balls rise is... (Assume, $g=10m{{s}^{-2}}$)

A) $5m$

B) $10m$

C) $7.5m$

D) $20m$

• question_answer19) The circular motion of a particle with constant speed is

A) periodic but not SHM

B) SHM but not periodic

C) periodic and also SHM

D) neither periodic nor SHM

• question_answer20) A planet moving around sun sweeps area ${{A}_{1}}$ in 2 days, ${{A}_{2}}$ in 3 days and ${{A}_{3}}$in 6 days. Then the relation between ${{A}_{1}},{{A}_{2}}$ and ${{A}_{3}}$ is

A) $3{{A}_{1}}=2{{A}_{2}}={{A}_{3}}$

B) $2{{A}_{1}}=3{{A}_{2}}=6{{A}_{3}}$

C) $3{{A}_{1}}=2{{A}_{2}}=6{{A}_{3}}$

D) $6{{A}_{1}}=3{{A}_{2}}=2{{A}_{3}}$

• question_answer21) A, B and C are the three identical conductors but made from different materials. They are kept in contact as shown. Their thermal conductivities are K, 2K and $\frac{K}{2}$. The free end of A is at ${{100}^{o}}C$ and the free end of C is at ${{0}^{o}}C$. During steady state, the temperature of the junction of A and B is nearly.....$^{o}C$.

A) $71$

B) $29$

C) $63$

D) $37$

• question_answer22) One mole of an ideal gas is taken from A to B from B to C and then back to A. The variation of its volume with temperature for that change is as shown. Its pressure at A is ${{P}_{0}}$, volume is ${{V}_{0}}$. Then, the internal energy

A) at A is more than at B

B) at C is less than at B

C) at B is more than at A

D) at A and B are equal

• question_answer23) Which of the following is incorrect?

A) If the wave is longitudinal, it must be a mechanical wave.

B) It the wave is mechanical, it may or may not be transverse wave.

C) Mechanical waves cannot propagate in vacuum.

D) Diffraction helps us to distinguish between sound wave and fight wave.

• question_answer24) Intensity level of sound whose intensity is ${{10}^{-8}}W{{m}^{-2}}$is...dB

A) $8$

B) $4$

C) $40$

D) $80$

• question_answer25) A point source of light is kept below the surface of water $\left( {{n}_{w}}=\frac{4}{3} \right)$ at a depth of $\sqrt{7}m$. The radius of the circular bright patch of light noticed on the surface of water is ... m.

A) $\frac{3}{\sqrt{7}}$

B) $3$

C) $\frac{\sqrt{7}}{3}$

D) $\sqrt{7}$

• question_answer26) A monochromatic beam of light is travelling from medium A of refractive index ${{n}_{1}}$ to a medium B of refractive index ${{n}_{2}}$. In the medium A , there are x number of waves in certain distance. In the medium B, there are y number of waves in the same distance. Then, refractive index of medium A with respect to medium B is ...

A) $\frac{y}{x}$

B) $\sqrt{\frac{x}{y}}$

C) $\frac{x}{y-x}$

D) $\frac{x}{y}$

• question_answer27) In Youngs double slit experiment, fringes of width $\beta$ are produced on a screen kept at a distance of 1 m from the slit. When the screen is moved away by$5\times {{10}^{-2}}m$, fringe width changes by $3\times {{10}^{-5}}m$. The separation between the slits is$1\times {{10}^{-3}}m$. The wavelength of the light used is ... nm.

A) $500$

B) $600$

C) $700$

D) $400$

• question_answer28) For sustained interference fringes in double slit experiment, essential condition/s is/are

 (1) sources must be coherent. (2) the intensities of the two sources must be equal.
Here, the correct option/s is/are

A) both (1) and (2)

B) only (1)

C) only (2)

D) neither (1) nor (2)

• question_answer29) In single slit experiment, the width of the slit is reduced. Then, the linear width of the principal Maxima ...

A) increases but becomes less bright

B) decreases but becomes more bright

C) increases but becomes more bright

D) decreases but becomes less bright

• question_answer30) In the uniform electric field of $E=1\times {{10}^{4}}N{{C}^{-1}}$, an electron is accelerated from rest. The velocity of the electron when it has travelled a distance of $2\times {{10}^{-2}}m$ is nearly ... $m{{s}^{-1}}$ ($\frac{e}{m}$ of electron $=1.8\times {{10}^{11}}Ck{{g}^{-1}}$)

A) $1.6\times {{10}^{6}}$

B) $0.85\times {{10}^{6}}$

C) $0.425\times {{10}^{6}}$

D) $8.5\times {{10}^{6}}$

• question_answer31) In this diagram, the P.D. between A and B is 60 V. The P.D. across $6\mu F$ capacitor is ...V

A) $10$

B) $5$

C) $20$

D) $4$

• question_answer32) In this circuit, when certain current flows, the heat produced in $5\Omega$, is $4.05\text{ }J$in a time t. The heat produced in $2\Omega$. coil in the same time interval is

A) $5.76$

B) $1.44$

C) $2.88$

D) $2.02$

• question_answer33) In this circuit, the value of ${{I}_{2}}$ is

A) $0.2\text{ }A$

B) $0.3\text{ }A$

C) $0.4\text{ }A$

D) $0.6\text{ }A$

• question_answer34) A straight current carrying conductor is kept along the axis of circular loop carrying current. The force exerted by the straight conductor on the loop is .............

A) perpendicular to the plane of the loop

B) in the plane of the loop, away from the center

C) in the plane of the loop, towards the center

D) zero

• question_answer35) A resistor of, an inductance of 0.5 H are in series with an a.c. which is given by $V=100\sqrt{2}\sin$(10000. The power factor of the combination is

A) $\frac{1}{\sqrt{2}}$

B) $\frac{1}{\sqrt{3}}$

C) $0.5$

D) $0.6$

• question_answer36) Pick out the wrong statement.

A) The gain in the K.E. of the electron moving at right angles to the magnetic field is zero.

B) When an electron is shot at right angles to the electric field, it traces a parabolic path.

C) An electron moving in the direction of the electric field gains K.E.

D) An electron at rest experiences no force in the magnetic field.

• question_answer37) A proton and an alpha particle are accelerated under the same potential difference. The ratio of de-Broglie wavelengths of the proton and the alpha particle is

A) $\sqrt{8}$

B) $\frac{1}{\sqrt{8}}$

C) $1$

D) $2$

• question_answer38) Spectrum of sunlight is an example for

A) band emission spectrum

B) line absorption spectrum

C) continuous emission spectrum

D) continuous absorption spectrum

• question_answer39) In hydrogen atom, electron excites from ground state to higher energy state and its orbital velocity is reduced to ${{\left( \frac{1}{3} \right)}^{rd}}$ of its initial value. The radius of the orbit in the ground state is R. The radius of the orbit in that higher energy state is ...

A) $2R$

B) $3R$

C) $27R$

D) $9R$

• question_answer40) Decay constants of two radio-active samples A and B are 15x and 3x respectively. They have equal number of initial nuclei. The ratio of the number of nuclei left in A and B after a time $\frac{1}{6x}$is

A) $e$

B) ${{e}^{2}}$

C) ${{e}^{-1}}$

D) ${{e}^{-2}}$

• question_answer41) Mass numbers of the elements A, B, C and D are 30, 60, 90, and 120 respectively. The specific binding energy of them are 5 MeV, 8.5 MeV, 8 MeV and 7 MeV respectively. Then, in which of the following reaction/s energy is released?

 (1) $D\to 2B$ (2) $C\to B+A$ (3) $B\to 2A$

A) only in (1)

B) in (2), (3)

C) in (1), (3)

D) in (1), (2) and (3)

• question_answer42) Copper and Germanium are cooled from room temperature to 100 K. Then the resistance of

A) Germanium decreases. Copper increases

B) Germanium decreases. Copper decreases

C) Germanium increases. Copper decreases

D) Germanium increases. Copper increases

• question_answer43) The most stable particle in the Baryon group is

A) neutron

B) proton

C) lamda particle

D) sigma particle

• question_answer44) Frequencies of light incident on a system of scattering particles are in the ratio of $1:2$. Then, the intensity of scattered light in a particular direction is ...

A) $1:4$

B) $1:2$

C) $1:8$

D) $1:16$

• question_answer45) The ratio of the magnetic dipole moment to the angular momentum of the electron in the 1st orbit of hydrogen atom is

A) $\frac{e}{2m}$

B) $\frac{e}{m}$

C) $\frac{2m}{e}$

D) $\frac{m}{e}$

• question_answer46) Milk is an example for

A) inelastic gel

B) foam

C) elastic gel

D) emulsion

• question_answer47) A body of mass m is travelling with a velocity u. When a constant retarding force F is applied, it comes to rest after travelling a distance ${{s}_{1}}$. If the initial velocity is 2u, with the same force F, the distance travelled before it comes to rest is ${{s}_{2}}$. Then

A) ${{s}_{2}}=2{{s}_{1}}$

B) ${{s}_{2}}=\frac{{{s}_{1}}}{2}$

C) ${{s}_{2}}={{s}_{1}}$

D) ${{s}_{2}}=4{{s}_{1}}$

• question_answer48) A block kept on a rough surface starts sliding when the inclination of the surface is $\theta$ with respect to the horizontal. The coefficient of static friction between the block and the surface is

A) $\sin \theta$

B) $\tan \theta$

C) $\cos \theta$

D) $sec\theta$

• question_answer49) Two bodies of masses m, and m^ are acted upon by a constant force F for a time t. They start from rest and acquire kinetic energies ${{E}_{1}}$ and ${{E}_{2}}$ respectively. Then $\frac{{{E}_{1}}}{{{E}_{2}}}$ is

A) $\frac{{{m}_{1}}}{{{m}_{2}}}$

B) $\frac{{{m}_{2}}}{{{m}_{1}}}$

C) $1$

D) $\frac{\sqrt{{{m}_{1}}{{m}_{2}}}}{{{m}_{1}}+{{m}_{2}}}$

• question_answer50) The X and Y components of a force F acting at ${{30}^{o}}$ to x-axis are respectively

A) $\frac{F}{\sqrt{2}},F$

B) $\frac{F}{2},\frac{\sqrt{3}}{2}F$

C) $\frac{\sqrt{3}}{2}F,\frac{1}{2}F$

D) $F,\frac{F}{\sqrt{2}}$

• question_answer51) Spheres of iron and lead having same mass are completely immersed in water. Density of lead is more than that of iron. Apparent loss of weight is ${{W}_{1}}$for iron sphere and ${{W}_{2}}$for lead sphere. Then $\frac{{{W}_{1}}}{{{W}_{2}}}$ is

A) $=1$

B) between 0 and 1

C) $=0$

D) $>1$

• question_answer52) A hot body is allowed to cool. The surrounding temperature is constant at${{30}^{o}}C$. The body takes time t, to cool from ${{90}^{o}}C$ to ${{89}^{o}}C$ and time ${{t}_{2}}$ to cool from ${{60}^{o}}C$ to ${{59.5}^{o}}C$. Then,

A) ${{t}_{2}}=2{{t}_{1}}$

B) ${{t}_{2}}=\frac{{{t}_{1}}}{2}$

C) ${{t}_{2}}=4{{t}_{1}}$

D) ${{t}_{2}}={{t}_{1}}$

• question_answer53) A particle executes SHM with amplitude $0.2m$and time period 24 s. The time required for it to move from the mean position to a point 0.1 m from the mean position is

A) $2s$

B) $3s$

C) $8s$

D) $12s$

• question_answer54) White light is incident normally on a glass slab. Inside the glass slab,

A) red light travels faster than other colours.

B) violet light travels faster than other colours.

C) yellow light travels faster than other colours.

D) all colours travel with the same speed.

• question_answer55) Two thin plano-convex lenses each of focal length f are placed as shown in the figure. The ratio of their effective focal lengths in the three cases is

A) $1:2:3$

B) $1:2:1$

C) $1:1:1$

D) $3:2:1$

E) None of the Above

• question_answer56) If the two slits in Youngs double slit experiment are of unequal width, then

A) the bright fringes will have unequal spacing.

B) the bright fringes will have unequal brightness.

C) the fringes do not appear.

D) the dark fringes are not perfectly dark.

• question_answer57) The phenomenon of polarization shows that light has ............ nature.

A) particle

B) transverse

C) longitudinal

D) dual

• question_answer58) Acceleration of a charged particle of charge q and mass m moving in a uniform electric field of strength E is

A) $\frac{qE}{m}$

B) $\frac{m}{qE}$

C) $mqE$

D) $\frac{q}{mE}$

• question_answer59) Two fixed charges A and B of $5\mu C$ each are separated by a distance of 6 m. C is the mid point of the line joining A and B. A charge Q of $-5\mu C$ is shot perpendicular to the line joining A and B through C with a kinetic energy of 0.06 J. The charge Q comes to rest at a point D. The distance CD is

A) $3m$

B) $\sqrt{3}m$

C) $3\sqrt{3}m$

D) $4m$

• question_answer60) A capacitor of capacitance of $10\mu F$ is charged to 10 V. The energy stored in it is

A) $100\mu J$

B) $500\mu J$

C) $1000\mu J$

D) $1\mu J$

• question_answer61) A first order reaction is 60% complete in 20 minutes. How long will the reaction take to be 84% complete?

A) $54mins$

B) $68mins$

C) $40mins$

D) $76mins$

• question_answer62) A given sample of milk turns sour at room temperature $({{27}^{o}}C)$ in 5 hours. In a refrigerator at $-{{3}^{o}}C$, it can be stored 10 times longer. The energy of activation for the souring of milk is

A) $2.303\times 10\text{ }R\text{ }kJ.mo{{l}^{-1}}$

B) $2.303\times 5\text{ }R\text{ }kJ.mo{{l}^{-1}}$

C) $2.303\times 3\text{ }R\text{ }kJ.mo{{l}^{-1}}$

D) $2.303\times 2.7\text{ }R\text{ }kJ.mo{{l}^{-1}}$

• question_answer63) At 300 K, a gaseous reaction: $A\xrightarrow{{}}B+C$was found to follow first order kinetics. Starting with pure A, the total pressure at the end of 20 minutes was 100 mm of Hg. The total pressure after the completion of the reaction is 180 mm of Hg. The partial pressure of A (in mm of Hg) is

A) $100$

B) $90$

C) $180$

D) $80$

• question_answer64) From the Ellingham graphs on carbon, which of the following statements is false?

A) $C{{O}_{2}}$ is more stable than $CO$ at less than 983 K

B) $CO$ reduces $F{{e}_{2}}{{O}_{3}}$ to Fe at less than 983 K

C) $CO$ is less stable than $C{{O}_{2}}$ at more than 983 K

D) $CO$ reduces $F{{e}_{2}}{{O}_{3}}$ to Fe in the reduction zone of Blast furnace

• question_answer65) Which of the following is a negatively charged bidentate ligand?

A) Dimethyl glyoximato

B) Cyano

C) Ethylene diamine

D) Acetato

• question_answer66) The secondary valency of platinum in tetra mine dichloroplatinum (IV) chloride is

A) $+4$

B) $+2$

C) $3$

D) $6$

• question_answer67) Which one of the following has a magnetic moment of$1.75B.M$?

A) $T{{i}^{3+}}$

B) ${{V}^{3+}}$

C) $C{{r}^{3+}}$

D) $F{{e}^{3+}}$

• question_answer68) The correct order of ionisation energy of C, N,O and F is

A) $F<N<C<O$

B) $C<N<O<F$

C) $C<O<N<F$

D) $F<O<N<C$

• question_answer69) The correct set of four quantum numbers for the outermost electron of sodium $(Z=11)$ is

A) $3,1,0,\frac{1}{2}$

B) $3,1,1,\frac{1}{2}$

C) $3,2,1,\frac{1}{2}$

D) $3,0,0,\frac{1}{2}$

• question_answer70) The ore that is concentrated by the Froth Floatation process is

A) Chalcopyrites

B) Cryolite

C) Cuprite

D) Calamine

• question_answer71) The equivalent mass of a certain bivalent metal is 20. The molecular mass of its anhydrous chloride is

A) $91$

B) $111$

C) $55.5$

D) $75.5$

• question_answer72) 2 moles of ${{N}_{2}}{{O}_{4(g)}}$ is kept in a closed container at 298 K and under 1 atm pressure. It is heated to 596 K when 20% by mass of ${{N}_{2}}{{O}_{4(g)}}$) decomposes to $N{{O}_{2}}$. The resulting pressure is

A) $2.4atm$

B) $1.2atm$

C) $4.8atm$

D) $2.8atm$

• question_answer73) Sucrose is not a reducing sugar since

A) it is chemically stable

B) it contains no free aldehyde or keto group adjacent to a group

C) it is built up of a fructose unit

D) it is optically active

• question_answer74) Which one of the following contains ionic, covalent and co-ordinate bonds?

A) $NaOH$

B) $NaCl$

C) $NaCN$

D) $NaNC$

• question_answer75) Dialysis can be used to separate

A) glucose and fructose

B) protein and starch

C) glucose and protein

D) glucose and $NaCl$

• question_answer76) The percentage of p-character of the hybrid orbital in graphite and diamond are respectively:

A) $33$ and $25$

B) $50$ and $75$

C) 67 and $75$

D) $33$ and $75$

• question_answer77) A gas expands from a volume of $1{{m}^{3}}$to a volume of $2{{m}^{3}}$against an external pressure of ${{10}^{5}}\text{ }N\text{ }{{m}^{-2}}$ The work done by the gas will be

A) ${{10}^{5}}kJ$

B) ${{10}^{2}}kJ$

C) ${{10}^{2}}J$

D) ${{10}^{3}}J$

• question_answer78) The mass of a non-volatile solute of molar man $40g\text{ }mo{{l}^{-1}}$that should be dissolved in 114 g octane to lower its vapour pressure by 20% is

A) $10g$

B) $11.4g$

C) $9.8g$

D) $12.8g$

• question_answer79) During the adsorption of a gas on the surface a solid, which of the following is true?

A) $\Delta G<0,\text{ }\Delta H>0,\text{ }\Delta S<0$

B) $\Delta G>0,\text{ }\Delta H<0,\text{ }\Delta S<0$

C) $\Delta G<0,\Delta H<0,\Delta S<0$

D) $\Delta G<0,\Delta H<0,\Delta S>0$

• question_answer80) The approximate time duration in hours to electroplate 30 g of calcium from molten calcium chloride using a current of 5 amp is [At. mass of Ca = 40]

A) $8$

B) $80$

C) $10$

D) $16$

• question_answer81) The pH of the solution obtained by mixing 100 mL of a solution of $pH=3$with 400 mL of solution of $pH=4$is

A) $3-log\text{ }2.8$

B) $7\text{ }-log\text{ }2.8g$

C) $4-log\text{ }2.8$

D) $5-log\text{ }2.8$

• question_answer82) The equilibrium constant of the reaction : ${{A}_{(s)}}+2B_{(aq)}^{+}\rightleftharpoons A_{(aq)}^{2+}+2{{B}_{(s)}};E_{cell}^{o}=0.0295V$is $\left[ \frac{2.303RT}{F}=0.059 \right]$

A) $10$

B) $2\times {{10}^{2}}$

C) $3\times {{10}^{2}}$

D) $2\times {{10}^{5}}$

• question_answer83) An oxygen containing organic compound was found to contain 52% carbon and 13% of hydrogen. Its vapour density is 23. The compound reacts with sodium metal to liberate hydrogen. A functional isomer of this compound is

A) Ethanol

B) Ethanal

C) Methoxy methane

D) Methoxy ethane

• question_answer84) Which one of the following is not true regarding electromeric effect?

A) It results in the appearance of partial charges on the carbon atoms.

B) It is a temporary effect.

C) It operates on multiple bonds.

D) It requires an attacking reagent.

• question_answer85) Which one of the following is not formed when a mixture of methyl bromide and bromobenzene is heated with sodium metal in the presence of dry ether?

A) Ethane

B) Diphenyl

C) Propane

D) Toluene

• question_answer86) Power alcohol is a mixture of

A) 80% Petrol $+$ 20% Benzene $+$ Small quantity of Ethanol

B) 80% Petrol $+$ 20% Ethanol $+$ Small quantity of Benzene

C) 80% Ethanol $+$ 20% Benzene $+$Small quantity of Petrol

D) 50% Petrol $+$ 50% Ethanol $+$ Small quantity of Benzene

• question_answer87) Identity C in the following

A) Water

B) Ethanol

C) Propanone

D) Cumene Hydro peroxide

• question_answer88) $20mL$of methane is completely burnt using $50mL$of oxygen. The volume of the gas left after cooling to room temperature is

A) $80mL$

B) $40mL$

C) $60mL$

D) $30mL$

• question_answer89) $100mL$of $0.1M$acetic add is completely neutralized using a standard solution of $NaOH$. The volume of ethane obtained at STP after the complete electrolysis of the resulting solution is

A) $112mL$

B) $56mL$

C) $224mL$

D) $560mL$

• question_answer90) Saccharin, an artificial sweetener, is manufactured from

A) Cellulose

B) Toluene

C) Cyclohexane

D) Starch

• question_answer91) Which of the following is not true for ${{S}_{N}}1$ reaction?

A) Favoured by polar solvents

B) ${{3}^{o}}$-alkyl halides generally react through ${{S}_{N}}1$ reaction.

C) The rate of the reaction does not depend upo the molar concentration of the nucleophile.

D) ${{1}^{o}}$-alkyl halides generally react through ${{S}_{N}}1$reaction.

• question_answer92) Oil of winter green is

A) An ester

B) A carboxylic acid

C) An alcohol

D) A ketone

• question_answer93) An organic compound A burns with a sooty flame. It is negative towards Tollens reagent test and positive for Borsches reagent test. The compound A is

A) Benz aldehyde

B) Acetophenone

C) Acetone

D) Salicylic acid

• question_answer94) For a reaction: $A+B\xrightarrow{{}}$Products, the rate of the reaction at various concentrations are given below:

 Expt [A] [B] $~rate(mol\text{ }d{{m}^{-3}}\text{ }{{s}^{-1}})$ 1 0.2 0.2 2 2 0.2 0.4 4 3 0.6 04 36
The rate law for the above reaction is ,

A) $r=k{{[A]}^{2}}[B]$

B) $r=k[A]{{[B]}^{2}}$

C) $r=k{{[A]}^{3}}[B]$

D) $r=k{{[A]}^{2}}{{[B]}^{2}}$

• question_answer95) Which one of the following has no unpaired electrons?

A) ${{O}_{2}}$

B) $O_{2}^{-}$

C) $O_{2}^{+}$

D) $O_{2}^{2-}$

• question_answer96) The atomic number of cobalt is 27. The EAN of cobalt in $N{{a}_{3}}[Co{{(N{{O}_{2}})}_{4}}C{{l}_{2}}]$ is

A) $35$

B) $24$

C) $36$

D) $34$

• question_answer97) The spin only magnetic moment of $N{{i}^{2+}}$ in aqueous solution would be [At No. of $Ni=28$]

A) $\sqrt{6}B.M$

B) $\sqrt{15}B.M$

C) $\sqrt{2}B.M$

D) $\sqrt{8}B.M$

• question_answer98) Impossible orbital among the following is

A) $2s$

B) $3f$

C) $2p$

D) $4d$

• question_answer99) The total number of electrons in 18 mL of water (density$=1g\text{ }m{{L}^{-1}}$) is

A) $6.02\times {{10}^{23}}$

B) $6.02\times {{10}^{25}}$

C) $6.02\times {{10}^{24}}$

D) $6.02\times 18\times {{10}^{23}}$

• question_answer100) The number of moles of hydrogen that can be added to 1 mole of an oil is the highest in

A) Linseed oil

B) Groundnut oil

C) Sunflower seed oil

D) Mustard oil

• question_answer101) The reaction between sodium and water can be made less vigorous by

A) Lowering the temperature

C) Amalgamating sodium

D) Adding a little acetic acid

• question_answer102) All colloidal dispersions have

A) very high osmotic pressure

B) Low osmotic pressure

C) No osmotic pressure

D) High osmotic pressure

• question_answer103) Silver iodide is used for producing artificial rain because $AgI$

A) is easy to spray at high altitude

B) is easy to synthesize

C) has crystal structure similar to ice

D) is insoluble in water

• question_answer104) The equilibrium constant of a reaction is $0.008$ at 298 K. The standard free energy change of the reaction at the same temperature is

A) $+11.96\text{ }kJ$

B) $-11.96\text{ }kJ$

C) $-5.43\text{ }kJ$

D) $-8.46\text{ }kJ$

• question_answer105) The function of potassium ethyl xanthate in froth floatation process is to make the ore

A) attracted towards water

B) water repellant

C) lighter

D) heavier

• question_answer106) The correct order of electronegativities of N, O, F and P is

A) $F>N>P>O$

B) $F>O>P>N$

C) $F>O>N>P$

D) $N>O>F>P$

• question_answer107) The s-block element used as a catalyst in the manufacture of Buna-S rubber is

A) $Mg$

B) $Ca$

C) $Ba$

D) $Na$

• question_answer108) Which of the following is not a characteristic of a covalent compound?

A) Low melting point

B) No definite geometry

C) Insoluble in polar solvent

D) Small difference in electronegativity between the combining atoms.

• question_answer109) The volume of $0.1M$oxalic acid that can be completely oxidized by $20mL$of $0.025M\,\,KMn{{O}_{4}}$ solution is

A) $125mL$

B) $25mL$

C) $12.5mL$

D) $37.5mL$

A) Lewis acid

B) Bronsted acid

C) either a Lewis acid or a Lewis base

D) Lewis base

• question_answer111) The vapour pressures of two liquids A and B in their pure states are in ratio of$1:2$. A binary solution of A and 5 contains A and B in the mole proportion of $1:2$. The mole fraction of A in the vapour phase of the solution will be

A) $0.33$

B) $0.2$

C) $0.25$

D) $0.52$

• question_answer112) Which of the following statements is true?

A) The total entropy of the universe remains constant.

B) The total entropy of the universe is continuously decreasing.

C) The total energy of the universe is continuously decreasing.

D) The total energy of the universe remains constant.

• question_answer113) $5mL$of $0.4N\text{ }NaOH$is mixed with $20mL$of$0.1N\text{ }HCl$. The pH of the resulting solution will be

A) $6$

B) $7$

C) $8$

D) $5$

• question_answer114) On adding which of the following, the pH of $20mL$ of $0.1N\text{ }HCl$will not alter?

A) $1mL$of $1N\text{ }HCl$

B) $20mL$of distilled water

C) $1mL$of $0.1N\text{ }NaOH$

D) $500mL$of $HCl$of $pH=1$

• question_answer115) Which one of the following has a potential more than zero?

A) $Pt,\frac{1}{2}{{H}_{2}}(1atm)|HCl(1M)$

B) $Pt,\frac{1}{2}{{H}_{2}}(1atm)|HCl(2M)$

C) $Pt,\frac{1}{2}{{H}_{2}}(1atm)|HCl(0.1M)$

D) $Pt,\frac{1}{2}{{H}_{2}}(1atm)|HCl(0.5M)$

• question_answer116) HCHO was treated with a reagent X. The product formed upon hydrolysis in the presence of an acid gave${{C}_{2}}{{H}_{5}}OH$. The reagent X is

A) Aqueous $KOH$

B) Alcoholic $KOH$

C) Alcoholic $KCN$

D) $C{{H}_{3}}MgI$

• question_answer117) Benzylamine is a stronger base than aniline because

A) The lone pair of electrons on the nitrogen atom in benzylamine is delocalised.

B) The lone pair of electrons on the nitrogen atom in aniline is delocalised.

C) The lone pair of electrons on the nitrogen atom in aniline is not involved in resonance.

D) Benzylamine has a higher molecular mass than aniline.

• question_answer118) The relative acidic strangths of benzoic acid, o-toluic acid and p-toluic acid is of the decreasing order :

A) p-toluic acid > o-toluic acid > benzoic acid

B) o-toluic acid > p-toluic acid > benzoic acid

C) p-toluic acid > benzoic acid > o-toluic acid

D) o-toluic acid > benzoid acid > p-toluic acid

• question_answer119) The $C-H$ bond and $C-C$ bond in ethane are formed by which of the following types of overlap?

A) $s{{p}^{3}}-s$and $s{{p}^{3}}-s{{p}^{3}}$

B) $s{{p}^{2}}-s$and $s{{p}^{2}}-s{{p}^{2}}$

C) $sp-s$and $sp-sp$

D) $p-s$and $p-p$

• question_answer120) The IUPAC name of is

A) 4-Hydroxy-2-pentanone

B) 2-Hydroxy-4-pentanone

C) 2-0xo-4-pentanol

D) 4-Keto-2-pentanol

• question_answer121) Secondary cortex is also known as

A) phellem

B) phelloderm

C) phellogen

D) bark.

• question_answer122) Pteridophytes are called vascular cryptogams, because they are non-seeded plants containing

A) xylem and phloem

B) only xylem

C) only phloem

D) neither xylem nor phloem.

• question_answer123) The enzymes which are absolutely necessary for recombinant DNA technology are

A) restriction endonucleases and topoisomerases

B) endonucleases and polymerases

C) restriction endonucleases and ligases

D) peptidases and ligases.

• question_answer124) Stomata on the surface of the leaf, open by

A) decreasing the solute concentration in the guard cells

B) increasing the solute concentration in the guard cells

C) weakening of the cell walls of the guard cells to allow them to stretch

D) increasing the water potential in the guard cells.

• question_answer125) Read the two statements A and B and identify the correct option from those given below. Statement A: Agrobacterium tumefaciens is the causative agent of crown gall disease of dicots. Statement B: Agrobacterium tumefaciens causes infection by entering the plant through wounds and injuries.

A) Statement A is correct and B is wrong.

B) Statement B is correct and A is wrong.

C) Both statements A and B are correct.

D) Both statements A and B are wrong.

• question_answer126) Which of the following is the correct pathway of absorbed water in the roots of plants?

A) Soil water $\to$ root hair cell $\to$ cortical cells pericycle $\to$ passage cells $\to$ xylem.

B) Soil water $\to$ root hair cell $\to$ passage cells cortical cells$\to$ xylem $\to$ pericycle.

C) Soil water $\to$ root hair cell $\to$ pericycle $\to$cortical cells $\to$ passage cells $\to$ xylem.

D) Soil water $\to$ root hair cell $\to$ cortical cells passage cells $\to$ pericycle $\to$ xylem.

• question_answer127) Usually, the whorl in a flower that attracts insects and protects the essential parts is

A) calyx

B) androecium

C) gynoecium

D) corolla.

A) mesophyll cells to vessels

B) vessels to mesophyll cells

C) mesophyll cells to sieve tubes

D) sieve tubes to mesophyll cells.

• question_answer129) Study the diagram given below and identify the cells labelled as A, B, C and D, and choose the correct option.

A)

 A = Eosinophil, B = Erythrocyte, C= Neutrophil and D = Basophil

B)

 A = Eosinophil, B = Lymphocyte, C = Neutrophil and D = Monocyte

C)

 A=Erythrocyte, B=Basophil, C=Neutrophil and D = Lymphocyte

D)

 A = Eosinophil, B = Monocyte, C = Neutrophil and D = Lymphocyte

• question_answer130) The sexually transmitted disease, that can affect both the male and the female genitals and may damage the eyes of babies born of infected mothers is

A) AIDS

B) syphilis

C) gonorrhoea

D) hepatitis.

• question_answer131) Chemiosmotic theory of ATP synthesis in the mitochondrion is based on

A) $C{{a}^{++}}$ gradient

B) ${{K}^{+}}$ gradient

C) ${{H}^{+}}$ gradient

D) $N{{a}^{+}}$ gradient.

• question_answer132) Following are few characters of a disorder in human body. [A] Inflammation of the mucous membrane of nasal passage. [B] Watery secretions by mucous glands. [C] Continuous sneezing. [D] Eye watering. [E] Rise in body temperature. Identify the disorder from the choices given below.

A) Bronchial asthma

B) Rhinitis

C) Bronchial carcinoma

D) Emphysema.

• question_answer133) In a condensed schematic representation of dark reaction of photosynthesis given below, steps are indicated by alphabets. Select the option where the alphabets are correctly identified.

A)

 A = $C{{O}_{2}}$ fixation, B = Reduction, C = Phosphorylation, D = Regeneration

B)

 A = Regeneration, B = $C{{O}_{2}}$ fixation, C = Reduction, D = Phosphorylation

C)

 A = $C{{O}_{2}}$ fixation, B = Phosphorylation, C = Reduction, D = Regeneration

D)

 A = $C{{O}_{2}}$ fixation, B = Phosphorylation, C = Regeneration, D = Reduction.

• question_answer134) Match the plants of economic importance given under column I with their scientific names given under column II and choose the correct option from the codes given below.

 Column I Column II A. Spices p. Syzygium aromaticum B. Pulses q. Cajanus cajan C. Medicinal r. Adhatoda vasica D. Cereals s. Sorghum vulgare t.Thea chinensis

A) $A=p,\text{ }B=r,\text{ }C=s,\text{ }D=t$

B) $A=p,B=s,C=r,D=q$

C) $A=t,B=r,C=q,D=p$

D) $A=p,\text{ }B=q,\text{ }C=r,\text{ }D=s$

• question_answer135) If father shows normal genotype and mother shows a carrier trait for haemophilia then

A) all the female off springs will be normal

B) all the female, off springs will be carriers

C) a male offspring has 50% chance of active disease

D) a female offspring has probability of 50% to have active disease.

• question_answer136) According to Best and Taylorss theory, which of the following does not play any role in blood clotting?

A) Prothrombin

B) Fibrinogen

C) Platelets

D) Calcium ions.

• question_answer137) Which of the following is not a character of cancerous tissues in our body?

A) Contact inhibition

B) Neoplasia

C) Metastasis

D) Inability for differentiation -

• question_answer138) Which of the following statements is not true for Nostoc?

A) It is prokaryotic.

B) It is autotrophic.

C) It is filamentous,

D) It is macroscopic.

• question_answer139) The system of classification of-plants proposed by which of these two botanists is claimed to be a natural system?

A) Engler and Prantl

B) Bentham and Hooker

C) Aristotle and Theophrastus

D) Darwin and Wallace

• question_answer140) Match the entries in Column I with those of Column II and choose the correct answer.

 Column I Column II A. Cleistogamy m. Insect pollination B. Geitonogamy n. Bud pollination C. Entomophily o. Pollination between flowers in the same plant D. Xenogamy p. Wind pollination q. Cross pollination

A) $A-o;B-m;C-q;D-n$

B) $A-m;B-q;C-n;D-o$

C) $A-n;B-o;C-m;D-q$

D) $A-q;B-p;C-o;D-n$

• question_answer141) The host for Cercospora personata belongs to this family of angiosperms.

A) Gramineae

B) Leguminosae

C) Malvaceae

• question_answer142) The final stage in the tissue culture programme before the new plants are taken out for cultivation: in the fields is known as

A) micro propagation

B) hardening

C) caulogenesis

D) embryogenesis

• question_answer143) An osmometer is filled with 0.5 M solution $NaCl$ in water. In which of the following to Buttons it must be immersed in order to make it shrink?

A) $0.5M$solution

B) $0.05M$solution

C) Distilled water

D) $0.75M$solution

• question_answer144) Perishable vegetables can be maintained fresh for a longer period by spraying them with a solution of

A) ABA -

B) cytokinin

C) ethephon

D) phenyl mercuric acetate

• question_answer145) The prebiotic atmosphere of the earth was of a reducing nature. It was transformed into an oxidizing atmosphere of present day due to the emergence of

A) cyanobacteria

B) angiosperms

C) photosyntnetic bacteria

D) eukaryotic algae

• question_answer146) Match the contraceptive methods given under Column I with their examples given under Column II. Select the correct choice from those given below.

 Column I Column II A. Chemical p. Tubectomy and Vasectomy B. lUDs q. Copper T and Loop C. Barriers r. Condom and Cervical cap D. Sterilization s. Spermicidal jelly and foam t. Coitus interruptus and calendar method

A) $A=s,B=q,C=r,D=p$

B) $A=s,B=t,C=q,D=r$

C) $A=p,\text{ }B=r,C=q,D=t$

D) $A=s,B=q,C=t,D=p$

• question_answer147) One of the following movements in our body is not completely involuntary. Identify it.

A) Deglutition

B) Peristalsis

C) Systole of the ventricles

D) Dilation of pupil of the eye

• question_answer148) This is not a GMO.

A) Btbrinjal

B) Golden rice

C) Tracy

D) Dolly

• question_answer149) The site of Krebs cycle is

A) cytoplasm

B) mitochondrial matrix

C) intermembrane space of mitochondria

D) rackers particles

• question_answer150) Which is the cutting organ in the mouth parts of cockroach?

A) Labium

B) Maxillary palp

C) Mandible

D) Labrum

• question_answer151) If this enzyme were to be absent in our small intestine, digestion of proteins in our body would be severely affected.

A) Pancreatic amylase

B) Maltase

C) Lipase

D) Enter kinase

• question_answer152) The frequency of heart beat in our body is maintained by

A) AV Node

B) SA Node

C) Node of Ranvier

D) Chordae tendineae

• question_answer153) Hypothalamus of the brain is not involved in this function.

A) Sleep-wake cycle

B) Osmoregulation and thirst

C) Temperature control

D) Accuracy of muscular movement

• question_answer154) The Hardy -Wemberg principle cannot operate If

A) the population is very large

B) frequent mutations occur in the population

C) the population has no chance of interaction with other populations

D) free interbreeding occurs among all members of the population

• question_answer155) The adult animal in this phylum is radially symmetrical; but its larva exhibits bilateral symmetry.

A) Echinodermata

B) Coelenterata

C) Arthropoda

D) Protozoa

• question_answer156) Identify the sense codon from the following.

A) UGA

B) AUG

C) UAG

D) UAA

• question_answer157) Select a suitable name for the following process. ${{C}_{6}}{{H}_{12}}{{O}_{6}}+2ADP+2Pi\to 2{{C}_{2}}{{H}_{5}}OH+2ATP+2C{{O}_{2}}\uparrow$

A) Alcoholic fermentation

B) Photorespiration

C) Lactate fermentation

D) Aerobic respiration

• question_answer158) The condition of erythroblastosis foetalis occurs only when

A) the husband is $R{{h}^{+}}$ and wife is $R{{h}^{-}}$

B) the husband is $R{{h}^{-}}$and wife is $R{{h}^{+}}$

C) the mother is $R{{h}^{+}}$and foetus is $R{{h}^{-}}$

D) the mother is $R{{h}^{-}}$ and foetus is $R{{h}^{+}}$

A) Sewage

B) Sulphur dioxide

C) Oxides of nitrogen

• question_answer160) The time for optimum chances of conception in a woman is ----- starting from the day of menstruation.

A) 1st day

B) 4th day

C) 14th day

D) 26th day

• question_answer161) The fourth cleavage plane during development of frogs egg is

A) double meridional

B) single meridional

C) single latitudinal

D) double latitudinal

• question_answer162) Which of the following parts of the vertebrate body arises from the mesoderm?

A) Spinal cord

B) Bony skeleton

C) Epidermis

D) Lens of the eye

• question_answer163) Point out the correct method of showing scientific name of coconut palm derived by binomial nomenclature.

A) Cocos nucifera

B) Cocos Nucifera

C) cocos Nucifera

D) cocos nucifera

A) Cuticle is absent in young stages.

B) The apex is protected by root cap.

C) Vascular bundles are collateral.

D) Xylem is centripetal in growth in the young roots.

• question_answer165) The given figure shows the floral diagram of a flower. Which of the following descriptions of the flower matches the floral diagram?

A) Heterochlamydeous, gamopetalous, pentamerous and bisexual

B) Heterochlamydeous, gamopetalous, tetramerous and bisexual

C) Homochlamydeous, polypetalous, pentamerous and bisexual

D) Homochlamydeous, gamopetalous, tetramerous and unisexual

• question_answer166) An interconnecting membranous network of the cell composed of vesicles, flattened sacs and tubules is

A) nucleus

B) mitochondrion

C) endoplasmic reticulum

D) lysosome

• question_answer167) Read the statements given below and identify the incorrect statement.

A) Scientific names are used all over the world.

B) Scientific names are often descriptive and tell us some important character of an organism.

C) Scientific names indicate relationship between species.

D) Scientific names favour multiple naming for the same kind of an organism.

• question_answer168) The lac operon is turned on when allolactose molecules bind to

A) promoter site

B) operator site

C) mRNA

D) represser protein

• question_answer169) Fearing that the child to be born may have a genetic disorder, a couple goes to a doctor. Which one of the following techniques is likely to be suggested by the doctor to cure the genetic disorder?

A) Hybridoma technology

B) Gene therapy

C) r DNA technology ,

D) Embryo transfer

• question_answer170) Select the group having only buffalo breeds of India from the following.

A) Surti, Mehsana, Murrah, Nagpuri

B) Mehsana, Murrah, Nagpuri, Haryana

C) Murrah, Nagpuri, Haryana, Ongole

D) Nagpuri, Haryana, Ongole, Sindhi

• question_answer171) With regard to the ABO blood typing system, if a man who has type B blood and a woman who has type 0 blood were to have children, what blood types could the children have?

A) A or 0

B) B or 0

C) AB or 0

D) . A, B, AB or 0

• question_answer172) Secretin and cholecystokinin are the hormones secreted in

A) pyloric stomach

B) duodenum

C) ileum

D) oesophagus

• question_answer173) Carbon dioxide is called a greenhouse gas, because

A) it is involved in photosynthesis

B) it emits light

• question_answer174) A fruit that develops from a single flower with a syncarpous pistil is

A) simple fruit

B) aggregate fruit

C) multiple fruit

D) pseudo carp

• question_answer175) The volume of blood that enters into the aorta with each ventricular systole is called

A) cardiac cycle

B) stroke volume

C) cardiac output

D) vital capacity

• question_answer176) The chromosomal complement of individuals with Turners syndrome is

A) $44A+XX$

B) $44A+XY$

C) $44A+XO$

D) $44A+XXY$

• question_answer177) Choose the mismatched pair from the following.

A) [a] Insulin - Gluconeogenesis

B) [b] Glucagon - Glycogenolysis

C) [c] Oxytocin - Contraction of uterine muscles

D) [d] Prolactin - Milk production in mammary glands

• question_answer178) Which one of the following is not a wildlife conservation project?

A) Project Dodo

B) Project Indian Bustard

C) Project Tiger

D) - Project Hangul

• question_answer179) Visible expression of the genetic phenomenon of crossing over is called

A) recombination

B) condensation

C) chiasmata

D) spiralization

• question_answer180) 3 AAA TGC GCG ATA 5 is the sequence of nucleotides on a gene; after transcription the /77RNA formed against it and the sequence of bases in the corresponding binding anticodons will be

A) $5\text{ }UUU\text{ }ACG\text{ }CGC\text{ }UAU\text{ }3$and $3AAA-UGC-GCG-AUA\text{ }5$

B) $5UAU\text{ }CGC\text{ }GCA\text{ }UUU3$and $3AUA-GCG-CGU-AAA\text{ }5$

C) $5UUU\text{ }ACC\text{ }TUG\text{ }UAU\text{ }3$and $3AAA-UGG-UAC-AUA\text{ }5$

D) $5UAU\text{ }GUT\text{ }CCA\text{ }UUU\text{ }3$and $3AUA-CAU-GGU-AAA\text{ }5$