Solved papers for J & K CET Medical J & K - CET Medical Solved Paper-2015

done J & K - CET Medical Solved Paper-2015

• question_answer1) Conductivity of semiconductors

A) is maximum at$0\text{ }K$

B) decreases with increase in temperature

C) increases with increase in temperature

D) is maximum at 300 K

• question_answer2) Two copper spheres having same radii, one solid and other hollow, are charged to the same potential. Which of the following statements is correct?

A) Hollow sphere will hold more charge

B) Solid sphere will hold more charge

C) Solid sphere will have uniform volume charge density

D) Both spheres will hold same charge

• question_answer3) Two pendula oscillate with a constant phase difference of$45{}^\circ$and same amplitude. If the maximum velocity of one of them is v and that of other is$v+x,$then the value of$x$will be

A) 0

B) $v/2$

C) $v/\sqrt{2}$

D) $(\sqrt{2})v$

• question_answer4) An observer standing near the sea-coast counts 48 waves per min. If the wavelength of the wave is 10 m, the velocity of the waves will be

A) 8m/s

B) 12m/s

C) 16m/s

D) 20m/s

• question_answer5) The carbon resistor has the color band sequence of green, orange, blue and silver. The value of resistance will be

A) $64\times {{10}^{7}}\pm 20%\,\Omega$

B) $53\times {{10}^{6}}\pm 20%\,\Omega$

C) $64\times {{10}^{7}}\pm 10%\,\Omega$

D) $53\times {{10}^{6}}\pm 10%\,\Omega$

• question_answer6) A parallel narrow-beam of light is falling normally on a glass sphere. It will come to a focus

A) inside the sphere (except at its centre)

B) on the surface of the sphere

C) outside the sphere

D) exactly at the centre of the sphere

• question_answer7) Which of the following is NOT an electromagnetic wave?

A) Sound wave

C) Microwave

D) Gamma ray

• question_answer8) The ratio of mass defect of the nucleus to its mass number is maximum for

A) ${{U}^{238}}$

B) ${{N}^{14}}$

C) $S{{i}^{28}}$

D) $F{{e}^{56}}$

• question_answer9) Assuming density d of a planet to be uniform, we can say that the time period of its artificial satellite is proportional to

A) $d$

B) $\sqrt{d}$

C) $1/\sqrt{d}$

D) $1/d$

• question_answer10) An ideal gas is heated at constant volume until its pressure doubles. Which one of the following statements is correct?

A) The mean speed of the molecules doubles

B) Root mean square speed of the molecules doubles

C) Mean square speed of the molecules doubles

D) Mean square speed of the molecules remains unchanged

• question_answer11) In a cyclic process, the change in the internal energy of a system over one complete cycle

A) depends on the path

B) is always negative

C) is always zero

D) is always positive

• question_answer12) In a transformer the number of primary turns is four times that of the secondary turns. Its primary is connected to an AC source of voltage V. Then,

A) current through its secondary is about four times that of the current through its primary

B) voltage across its secondary is about four times that of the voltage across its primary

C) voltage across its secondary is about two times that of the voltage across its primary

D) voltage across its secondary is about$1/(2\sqrt{2})$times that of the voltage across its primary

• question_answer13) The path of a charge particle after it enters a region of a uniform electrostatic field with velocity perpendicular to the field will be

A) straight line

B) circular

C) helical

D) parabolic

• question_answer14) The dimension of magnetic flux is

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

B) $[M{{L}^{-1}}T{{A}^{-2}}]$

C) $[M{{L}^{-2}}{{T}^{2}}{{A}^{-2}}]$

D) $[M{{L}^{2}}{{T}^{-2}}{{A}^{-1}}]$

• question_answer15) A ball is dropped from the top of 80 m high tower. If after 2 s of fall the gravity$(g=10\text{ }m/{{s}^{2}})$disappears, then time taken to reach the ground since the gravity disappeared is

A) 2s

B) 3s

C) 4s

D) 5s

• question_answer16) Which of the following is correct statement about the magnitude of the acceleration a of the particle executing simple harmonic motion?

A) a will be maximum at the equilibrium position .

B) a will be maximum at the extreme position

C) a will be always constant

D) a will always be zero

• question_answer17) A concave mirror has focal length$f$. A convergent beam of light is made incident on it. Then the image distance$V$is

A) zero

B) less than$f$

C) equal to$f$

D) more than$f$

• question_answer18) In an n-p-n transistor, p is

A) intrinsic semiconductor

B) emitter

C) collector

D) base

• question_answer19) In the fringe pattern of a Youngs double slit experiment the ratio of intensities of maxima and minima is 25 : 9. Then, the ratio of the amplitudes of interfering waves is

A) $4:1$

B) $5:3$

C) $4:3$

D) $25:9$

• question_answer20) Consider a ray of light travelling from a denser to a rarer medium. If it is incident at the critical angle then

A) it will emerge out into the rarer medium

B) it will undergo total internal reflection

C) it will travel along the interface separating the two media

D) it will retrace its path

• question_answer21) Radius of Earth is 6400 km and that of Mars is 3200 km. Mass of Mars is 0.1 that of Earths mass. Then, the acceleration due to gravity on Mars is nearly

A) $1\text{ }m/{{s}^{2}}$

B) $\text{2}\text{.5 }m/{{s}^{2}}$

C) $\text{4 }m/{{s}^{2}}$

D) $\text{5 }m/{{s}^{2}}$

• question_answer22) Consider boiling water converting into steam. Under this condition, the specific heat of water is

A) less than zero

B) zero

C) slightly greater than zero

D) infinite

• question_answer23) Smallest division on the main scale of given vernier calipers is 0.5 mm. Vernier scale has 2 5 divisions and these coincide with 24 main scale divisions. The least count of vernier calipers is

A) 0.001 cm

B) 0.002cm

C) 0.01 cm

D) 0.02cm

• question_answer24) If R is Rydbergs constant, the series limit of the wavelength of Balmer series for hydrogen atom is given by

A) $1/R$

B) $4/R$

C) $9/R$

D) $16/R$

• question_answer25) In which of the following both transverse and longitudinal waves propagate?

A) Heat transfer

B) Elastic wave motion in a solid

C) Microwave communication

D) X-ray motion

• question_answer26) The combination of gates as shown in the figure forms the A) AND gate

B) OR gale

C) NOR gate

D) NOT gate

• question_answer27) A magnet makes a single pass through a coil. Then, across the ends of the coil it produces

A) DC voltage

B) sinusoidal voltage

C) single voltage pulse

D) two voltage pulses

• question_answer28) The energy per mole per degree of freedom of an ideal gas is

A) $(3/2){{k}_{B}}T$

B) $(1/2){{k}_{B}}T$

C) $(3/2)RT$

D) $(1/2)RT$

• question_answer29) Metal alloys are used for making standard resistance coils because

A) they have high thermal conductivity

B) their resistance depends weakly on temperature

C) they have low thermal conductivity

D) their resistance depends strongly on temperature

• question_answer30) The dielectric constant of a perfect conductor is

A) +1

B) 0

C) infinite

D) $-1$

• question_answer31) The 220 V AC line voltage that we receive in our homes is

A) rms value

B) peak value

C) average value

D) None of these

• question_answer32) A person is standing on a weighing-scale and observes that the reading is 60 kg. He then suddenly jumps up and observes that reading goes to 70 kg. Then his maximum upward acceleration is

A) zero

B) $1.4\text{ }m/{{s}^{2}}$

C) $1.63\text{ }m/{{s}^{2}}$

D) $9.8\text{ }m/{{s}^{2}}$

• question_answer33) A solid sphere is rolling down an inclined plane. Then, the ratio of its translational kinetic energy to its rotational kinetic energy is

A) 2.5

B) 1.5

C) 1

D) 0.4

• question_answer34) A block of mass 3 kg starts from rest and slides down a curved path in the shape of a quarter-circle of radius 2 m and reaches the bottom of path with a speed 1 m/s. If g is$10\text{ }m/{{s}^{2}},$the amount of work done against friction is

A) 60J

B) 36J

C) 24J

D) 12J

• question_answer35) Values for Brewsters angle can be

A) only less than $45{}^\circ$

B) only greater than$45{}^\circ$

C) any value in the range$0{}^\circ$to$90{}^\circ$except$45{}^\circ$

D) any value in the range$0{}^\circ$to$90{}^\circ$including$45{}^\circ$

• question_answer36) Consider a bi-convex lens and a plano-convex lens, with radii of curvature of all the curved surfaces being same. If /is the focal length of bi-convex lens then, the focal length of the plano-convex lens is

A) $4f$

B) $2f$

C) $f$

D) $0.5f$

• question_answer37) A body is travelling towards East with a speed of 9 m/s and with an acceleration of$2\text{ }m/{{s}^{2}}$acting along West on it. The displacement of the body during the 5th second of its motion is

A) 0.25 m

B) 0.5 m

C) 0.75 m

D) zero

• question_answer38) Bulk modulus is defined by

A) increase in length per unit length per unit applied stress

B) increase in volume per unit volume per unit applied stress

C) lateral displacement per unit length per unit applied stress

D) change in cross-sectional area per unit area per unit applied stress

• question_answer39) A bullet fired from a rifle loses 20% of its speed while passing through a wooden plank. Then, minimum number of wooden planks required to completely stop the bullet is

A) 3

B) 5

C) 15

D) 25

• question_answer40) If the forward bias voltage in a p-n junction diode is decreased, the length of depletion region will

A) increase

B) decrease

C) not change

D) initially increase and then decrease

• question_answer41) A particle is undergoing uniform circular motion with angular momentum L. While moving on the same path if its kinetic energy becomes four times, then its angular momentum will be

A) L/4

B) L/2

C) L

D) 2L

• question_answer42) A 1m long solenoid containing 1000 turns produces a flux density of$3.14\times {{10}^{-3}}T$. The current in the solenoid will be

A) 2.0 A

B) 2.5 A

C) 3.0 A

D) 3.5 A

• question_answer43) Which of the following is incorrect about sky waves?

A) Sky waves are not used in long distance communication

B) Their propagation takes place by total internal reflection

C) Sky waves support the so-called AM band

D) The frequency of sky waves ranges typically from 3 MHz to 30 MHz

• question_answer44) The wave nature of electrons is demonstrated by the

A) Photoelectric effect

B) Rutherfords experiment

C) Dopplers effect

D) Davisson and Germer experiment

• question_answer45) A person carrying a. whistle emitting continuously a note of 272 Hz is running towards a reflecting surface with a speed of 18 km/h. If the speed of sound is 345 m/s, the number of beats heard by him are

A) 4

B) 6

C) 8

D) 10

• question_answer46) Consider the two cells having emf${{E}_{1}}$and${{E}_{2}}$$({{E}_{1}}>{{E}_{2}})$connected as shown in the figure. A potentiometer is used to measure potential difference between P and Q and the balancing length of the potentiometer wire is 0.8 m. Same potentiometer is then used to measure potential difference between P and R and the balancing length is 0.2 m. Then, the ratio${{E}_{1}}/{{E}_{2}}$is A) 4/3

B) 5/4

C) 5/3

D) 4/1

• question_answer47) Which of the following is NOT an example of primary cell?

A) Voltaic cell

C) Daniel cell

D) Leclanche cell

• question_answer48) Red, blue, green and violet colour lights are one by one made incident on a photocathode. It is observed that only one color light produces photo-electrons.

A) Red

B) Blue

C) Green

D) Violet

• question_answer49) What amount of original radioactive material is left?

A) 6.5%

B) 12.5%

C) 25.5%

D) 33.3%

• question_answer50) Consider a region of uniform magnetic field directed along positive X-axis. Now a positive test charge Q, located at origin 0 (0, 0) inside the field, is released from rest position. The particle will

A) remain stationary at origin$O$

B) move along positive X-axis

C) move along negative X-axis

D) undergo a circular motion in the$X-Y$plane

• question_answer51) A charge particle having charge$1\times {{10}^{-19}}C$revolves in an orbit of radius$1\overset{o}{\mathop{A}}\,$such that the frequency of revolution is${{10}^{16}}Hz$. The resulting magnetic moment in SI units will be

A) $1.57\times {{10}^{-21}}$

B) $3.14\times {{10}^{-21}}$

C) $1.57\times {{10}^{-23}}$

D) $3.14\times {{10}^{-23}}$

• question_answer52) The length of antenna to transmit waves of 1 MHz will be

A) 3m

B) 15 m

C) 30m

D) 300m

• question_answer53) A series LCR circuit is connected to an AC source and is showing resonance. Then

A) ${{V}_{R}}=0$

B) ${{V}_{L}}={{V}_{R}}$

C) ${{V}_{C}}={{V}_{R}}$

D) ${{V}_{L}}={{V}_{C}}$

• question_answer54) Dimensions of Plancks constant are

A) $[M{{L}^{2}}{{T}^{-1}}]$

B) $[M{{L}^{2}}{{T}^{-3}}]$

C) $[ML{{T}^{-1}}]$

D) $[M{{L}^{3}}{{T}^{-3}}]$

• question_answer55) Consider an electric dipole placed in a region of non-uniform electric field. Choose the correct statement out of the following options:

A) The dipole will experience only a force

B) The dipole will experience only a torque

C) The dipole will experience both the force and torque

D) The dipole will neither experience a force nor a torque

• question_answer56) A block of mass m is placed on an inclined plane having coefficient of friction W. The plane is making an angle 0 with the horizontal. The minimum value of upward force acting along the inclined plane that can just move the block up is

A) $mg\,\cos \theta$

B) $mmg\,\cos \theta$

C) $mg\,\sin \theta$

D) $mmg\,\sin \theta$

• question_answer57) A ball is projected up at an angle$\theta$with horizontal from the top of a tower with speed V. It hits the ground at point A after time${{t}_{A}}$with speed${{V}_{A}}$. Now, this ball is projected at same angle and speed from the base of the tower (located at point P) and it hits ground at point B after time${{t}_{B}}$with speed${{V}_{B}}$. Then

A) $PA=PB$

B) ${{t}_{A}}={{t}_{B}}$

C) ${{V}_{A}}>{{V}_{B}}$

D) ball A hits the ground at an angle$(-\theta )$with horizontal

• question_answer58) The electric field of an electric dipole at a point on its axis at a distance$d$from the centre of the dipole varies as

A) $1/d$

B) $1/{{d}^{2}}$

C) $1/{{d}^{3}}$

D) $1/{{d}^{3/2}}$

• question_answer59) Un-polarised light is travelling from a medium of refractive index 2 to a medium of refractive index 3. The angle of incidence is$60{}^\circ$. Then

A) Reflected light will be partially polarized

B) reflected/light will be plane polarised in a plane perpendicular to plane of incidence

C) refracted light will be plane polarised in a plane perpendicular to plane of incidence

D) refracted light will be plane polarised in a plane parallel to plane of incidence

• question_answer60) Newtons law of cooling applies when a body is losing heat to its surroundings by

A) conduction

B) convection

D) conduction as well as radiation

• question_answer61) If a homogeneous colloid placed in dark is observed in the direction of light, it appears clear and if it is observed from a direction at right angles to the direction of light beam, it appears perfectly dark. This is known as

A) Brownian effect

B) Hardy Schulze effect

C) Einstein effect

D) Tyndall effect

• question_answer62) When powdered plaster of Paris is mixed with correct amount of water, it sets into a solid mass of

A) $CaS{{O}_{4}}.5{{H}_{2}}O$

B) $CaS{{O}_{4}}.3{{H}_{2}}O$

C) $CaS{{O}_{4}}.2{{H}_{2}}O$

D) $CaS{{O}_{4}}.1/2{{H}_{2}}O$

• question_answer63) $PV$value decreases with increases in p at constant temperature when

A) there is no attractive or repulsive forces between molecules

B) attractive and repulsive forces between molecules are equal

C) attractive forces between molecules are predominant

D) repulsive forces between molecules are predominant

• question_answer64) For a reaction,$C(s)+C{{O}_{2}}(g)\xrightarrow{{}}2CO(g);$the partial pressure of$C{{O}_{2}}$and$CO$are 4 and 8 atm, respectively.${{K}_{p}}$for the reaction is

A) 0.5

B) 2

C) 16

D) 4

• question_answer65) HA is a weak acid. At$25{}^\circ C,$the molar conductivity of 0.02 M HA is$150\,{{\Omega }^{-1}}c{{m}^{2}}mo{{l}^{-1}}.$If its$\Lambda _{m}^{o}$is$300\,{{\Omega }^{-1}}c{{m}^{2}}mo{{l}^{-1}},$then equilibrium constant of HA dissociation is

A) 0.001

B) 0.005

C) 0.01

D) 0.02

• question_answer66) The product of the following reaction is A) B) C) D) • question_answer67) Identify the major product for the reaction given below: A) B) C) D) • question_answer68) 30 mL of 0.02 M ammonium hydroxide is mixed with 15 mL of$0.02\text{ }M\text{ }HCl$. What will be the pH of the solution$(p{{K}_{b}}=4.0)$?

A) 4

B) 8

C) 4

D) 10

• question_answer69) In an acidified aqueous solution of$M{{n}^{2+}},N{{i}^{2+}},C{{u}^{2+}}$ and$H{{g}^{2+}}$ions,${{H}_{2}}S$gas was passed. Precipitates are

A) MnS and CuS

B) NiS and HgS

C) MnS and NiS

D) CuS and HgS

• question_answer70) Shape of$S{{F}_{4}}$is

A) tetrahedral

B) square planar

C) trigonal pyramid

D) see-saw

• question_answer71) The following tripeptide can be synthesized from the following ammo acid A) Glycine, Leucine and Alanine

B) Alanine, Isoleucine and Giycine

C) Valine, Alanine and Glycine

D) Alanine, Serine and Glycine

• question_answer72) The species which cannot serve as an initiator for the free radical polymerisation, is

A) B) C) D) • question_answer73) Nylon is a

A) polyamide

B) carbonate

C) ester

D) polycarboxylic acid

• question_answer74) A gas at high temperature is cooled. The highest temperature at which liquefaction of gas first occurs is called

A) Boyle temperature

B) critical temperature

C) boiling temperature

D) freezing temperature

• question_answer75) Buna-N synthetic rubber is obtained by copolyrnerisation of

A) $C{{H}_{2}}=CH-CH=C{{H}_{2}}$and ${{H}_{5}}{{C}_{6}}-CH=C{{H}_{2}}$

B) $C{{H}_{2}}=CH-CN$and ${{H}_{2}}C=CH-CH=C{{H}_{2}}$

C) ${{H}_{2}}C=CH-CN$and $C{{H}_{2}}=CH-C(C{{H}_{3}})=C{{H}_{2}}$

D) ${{H}_{2}}C=CH-C(Cl)=C{{H}_{2}}$and ${{H}_{2}}C=CH-CH=C{{H}_{2}}$

• question_answer76) When the following amide is treated with $B{{i}_{2}}/KOH,$it gives A) B) C) D) • question_answer77) The IUPAC name of the coordination compound$[Co{{({{H}_{2}}O)}_{2}}{{(N{{H}_{3}})}_{4}}]C{{l}_{3}}$is

A) tetraamminediaquacobalt (III) chloride

B) cobalt (III) tetraamminediaqua chloride

C) diaquatetraammine cobalt (III) chloride

D) tetraamminediaquacobalt (II) chloride

• question_answer78) Siderite is mainly ore of

A) Zn

B) Fe

C) Cd

D) Ru

• question_answer79) Among$P,S,Cl,F,$the elements with most negative and least negative electron gain enthalpy respectively, are

A) $Cl,S$

B) $F,S$

C) $Cl,P$

D) $F,P$

• question_answer80) For a reaction$2A\xrightarrow[{}]{{}}3B;$if the rate of formation of B is$x\text{ }mol/L,$the rate of consumption of A is

A) $x$

B) $\frac{3x}{2}$

C) $\frac{2x}{3}$

D) $3x$

• question_answer81) The following alcohol after treatment with acid gives compound A. Ozonolsis of A gives nonane-2, 8-dione. The compound A is A) B) C) D) • question_answer82) In$H{{e}_{2}},$the electrons in bonding and anti-bonding orbitals are

A) 2, 2

B) 4, 2

C) 4, 0

D) 2, 4

• question_answer83) 0.5 molal solution of a solute in benzene shows a depression in freezing point equal to 2 K. Molal depression constant for benzene is$5\text{ }K\text{ }kg\text{ }mo{{l}^{-1}}$. If the solute forms dimer in benzene, what is the % association?

A) 40

B) 50

C) 60

D) 80

• question_answer84) The major product of the following transformation is A) B) C) D) • question_answer85) A highly stable conformation for the following compound is A) B) C) D) • question_answer86) Molar enthalpy change for melting of ice is 6 kJ/mol. Then the internal energy change (in kJ/mol) when 1 mole of water is converted into ice at 1 atm at$0{}^\circ C$is

A) $RT/1000$

B) $6$

C) $6-(RT/1000)$

D) $6+(RT/1000)$

• question_answer87) Identify the correct product of the following reaction A) B) C) D) • question_answer88) Among second period elements, the correct order for first ionisation enthalpy is

A) $Li<Be<B<C<N<O<F<Ne$

B) $Li<B<Be<C<O<N<F<Ne$

C) $Li>Be>B>C>N>O>F>Ne$

D) $Li>B>C>Be>O>N>F>Ne$

• question_answer89) For the reaction $A(s)+2{{B}^{+}}(aq)\to {{A}^{2+}}(aq)+2B(s);$ the$E{}^\circ$is 1.18 V. Then the equilibrium constant for the reaction is

A) 1010

B) 1020

C) 1040

D) 1060

• question_answer90) Identify the correct statement about the following pairs of compounds. A) A and B diastereomer; C and D diastereomer

B) A and B enantiomer; C and D diastereomer

C) A and B diastereomer; C and D enantiomer

D) A and B enantiomer; C and D enantiomer

• question_answer91) One of the following complexes shows geometrical isomerism. The complex is

A) $PtC{{l}_{4}}$

B) $Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}$

C) $Pt{{(N{{H}_{3}})}_{3}}Cl$

D) $Ni{{(N{{H}_{3}})}_{3}}Cl$

• question_answer92) The ionisation potential of hydrogen atom is 13.6 eV. The energy required to remove an electron from$n=2$state of hydrogen atom is

A) 27.2eV

B) 13.6eV

C) 6.8eV

D) 3.4eV

• question_answer93) Among the following pair, which one has both variables as intensive variable?

A) T, V

B) m, p

C) d, V

D) p, T

• question_answer94) Which one of the following will quickly react with$AgN{{O}_{3}}$? A) B) C) D) • question_answer95) The number of tetrahedral and octahedral void per unit cell of cubic closed packed structure is

A) 4, 8

B) 4, 4

C) 8, 4

D) 8, 8

• question_answer96) In the following disaccharide, A) Ring [A] is pyranonewith a-glycosidiclink

B) Ring [A] is furanone with a-glycosidic link

C) Ring [B] is pyranone with (3-glycosidic link

D) Ring [B] is furanone with a-glycosidic link

• question_answer97) When a dilute solution of ammonia is saturated with${{H}_{2}}S$it gives

A) ${{(N{{H}_{4}})}_{2}}S$

B) $N{{H}_{4}}HS$

C) ${{(N{{H}_{3}})}_{2}}{{H}_{2}}S$

D) $N{{H}_{3}}.{{H}_{2}}S$

• question_answer98) If$E_{{{M}^{+}}/M}^{0}=-1.2V,$$E_{{{x}_{2}}/{{x}^{-}}}^{0}=-1.1V$and$E_{{{O}_{2}}/{{H}_{2}}O}^{0}=1.23V,$then on electrolysis of aqueous solution of salt MX, the products obtained are

A) $M,{{X}_{2}}$

B) ${{H}_{2}},{{X}_{2}}$

C) ${{H}_{2}},{{O}_{2}}$

D) $M,{{O}_{2}}$

• question_answer99) For the process to occur under adiabatic condition, the correct condition is

A) $\Delta T=0$

B) $\Delta U=0$

C) $\Delta p=0$

D) $\Delta q=0$

• question_answer100) Which of the element is available in carbonic anhydrase?

A) $Pd$

B) $Fe$

C) $Zn$

D) $Pt$

• question_answer101) Identify reactant [A] for the following reaction A) B) C) D) • question_answer102) Identify the product of the following reaction. A) B) C) D) • question_answer103) The absolute configuration of the following compound is A) R, R, R

B) R, R, S

C) R, S, R

D) S, R, R

• question_answer104) The wrong statement among the following is

A) acid rain is mostly because of oxides of nitrogen and sulphur

B) green house effect is responsible for global warming

C) ozone layer does not permit infrared infrared radiation from the sun to reach earth

D) chlorofluorocarbons are responsible for ozone layer depletion

• question_answer105) The vapour pressure of pure benzene at certain temperature is 1 bar. A non-volatile, non-electrolyte solid weighing 2 g when added to 39 g of benzene (molar mass$78\text{ }g\text{ }mo{{l}^{-1}}$) yields solution of vapour pressure of 0.8 bar. The molar mass of solid substance is

A) 32

B) 16

C) 64

D) 48

• question_answer106) $HCI{{O}_{4}}.2{{H}_{2}}O$after reaction with fuming sulphuric acid generates.

A) $Cl{{O}_{2}}+{{H}_{2}}S{{O}_{4}}$

B) $C{{l}_{2}}{{O}_{7}}+{{H}_{2}}S{{O}_{4}}$

C) $HCl{{O}_{4}}+{{H}_{2}}S{{O}_{4}}$

D) $C{{l}_{2}}{{O}_{6}}+{{H}_{2}}S{{O}_{4}}$

• question_answer107) The compound formed upon combustion of potassium metal in excess air is

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

B) $K{{O}_{2}}$

C) ${{K}_{2}}O$

D) $KOH$

• question_answer108) Energy of activation of forward reaction for an endothermic process is 90 kJ. If enthalpy change for the reaction is 50 kJ then activation energy for backward reaction will be

A) 40kJ

B) 140kJ

C) 90 kJ

D) 50 kJ

• question_answer109) For ion$O_{2}^{-}$the bond order is

A) 2

B) 1.5

C) 2.5

D) 0

• question_answer110) Extraction of mercury from cinnabar is achieved by

A) heating it in air

B) electrolytic reduction

C) roasting followed by reduction with caroon

D) roasting followed by reduction with another metal

• question_answer111) The correct order of the ligands, $O{{H}^{-}},NO_{3}^{-},PP{{h}_{3}},$pyridine, according to their increasing field strength is

A) $NO_{3}^{-}<O{{H}^{-}}<pyridne<PP{{h}_{3}}$

B) $O{{H}^{-}}<NO_{3}^{-}<PP{{h}_{3}}<pyridne$

C) $O{{H}^{-}}<NO_{3}^{-}<pyridne<PP{{h}_{3}}$

D) $NO_{3}^{-}<O{{H}^{-}}<PP{{h}_{3}}<pridine$

• question_answer112) When${{(C{{H}_{3}})}_{3}}CC{{H}_{2}}Cl$is heated at$300{}^\circ C,$it gives

A) B) C) D) • question_answer113) If the density of methanol is$0.8\text{ }kg\text{ }{{L}^{-1}},$ what is its volume needed for making 4 L of its 0.25 M solution?

A) 4 mL

B) 8 mL

C) 40 mL

D) 80 mL

• question_answer114) The number of Na atom in 46 g Na (atomic weight of Na = 23) is

A) $6.023\times {{10}^{23}}$

B) 2

C) 1

D) $12.046\times {{10}^{23}}$

• question_answer115) If the solubility of a sparingly soluble salt$A{{X}_{2}}$ is s mol/L, the solubility product is

A) $4{{s}^{3}}$

B) $8{{s}^{3}}$

C) $4{{s}^{2}}$

D) ${{s}^{2}}$

• question_answer116) Which one of the following does not have$s{{p}^{3}}$ hybridisation?

A) $C{{H}_{4}}$

B) $Xe{{F}_{4}}$

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

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

• question_answer117) Milk is an example of

A) emulsion

B) sol

C) gel

D) foam

• question_answer118) $\frac{{{K}_{p}}}{{{K}_{C}}}$for the reaction $A(g)+2{{B}_{2}}(g)\xrightarrow{{}}A{{B}_{2}}(g)$is

A) $RT$

B) ${{(RT)}^{2}}$

C) $\frac{1}{RT}$

D) $\frac{1}{{{(RT)}^{2}}}$

• question_answer119) One mole of an ideal gas expands isothermally and reversibly from 2 L to 20 L at 300 K. If the final pressure of the gas is 1 bar, the work done by the gas is

A) $-300\,R\,in\,10$

B) $300\,R\,in\,10$

C) $18$

D) $-18$

• question_answer120) A unit cell with edge length$a\ne b\ne c$and axial angle$\alpha =\beta =\gamma =90{}^\circ$is called

A) cubic

B) tetragonal

C) orthorhombic

D) hexagonal

• question_answer121) Which of the following pairs in angiosperms are diploid and triploid, respectively?

A) Polar nucleus and secondary nucleus

B) Microspore mother cell and egg cell

C) Secondary nucleus and endosperm

D) Endosperm and antipodal cells

• question_answer122) What is the function of germ pore?

A) Initiation of pollen tube

B) Absorption of water for seed germination

C) Emergence of radical

D) Release of male gametes

• question_answer123) In${{C}_{3}}-$plants, the first stable compound formed after$C{{O}_{2}}$fixation is

A) oxaloacetic acid

B) malic acid

C) phosphoglyceraldehyde

D) 3-phosphoglycerate

• question_answer124) The part of Fallopian tube closest to the ovary is

A) infundibulum

B) isthmus

C) ampulla

D) cervix

• question_answer125) As secondary growth proceeds, in a dicot stem, the thickness of

A) sapwood increases

B) heartwood increases

C) Both [a] and [b]

D) Both sapwood and heartwood remains the same

• question_answer126) The tissue which covers the external surface of the animal body and the internal surface of visceral organs is

A) epithelial tissues

B) connective tissue

D) None of these

• question_answer127) Amount of aie remains after deep breathing is called

B) residual volume

C) vital capacity

D) ventilation rate

• question_answer128) A transgenic food crop which may help in solving the problem of night-blindness in developing countries is

A) Golden rice

B) Flavr savr tomatoes

D) Bt soybean

• question_answer129) The basic functional unit of human kidney is

A) Henles loop

B) nephron

C) nephridia

D) pyramid

• question_answer130) What is the inner lining of the uterus called?

A) Cervix

B) Oviduct

C) Endometrium

D) Fimbriae

• question_answer131) Common character at all vertebrates without exception is

A) body divided into head, trunk and tail

B) two pairs of limbs

C) exoskeleton

D) the presence of skull

• question_answer132) Energy flow in ecosystem is

A) bidirectional

B) multidirectional

C) unidirectional

D) all around

• question_answer133) The polluting strength of sewage is usually characterised by its

A) BOD

B) nitrogen content

C) ozone content

D) eutrophication

• question_answer134) Most plants obtain their nitrogen from the soil in the form of

A) nitric acid

B) free nitrogen gas

C) nitrates

D) nitrite

• question_answer135) Coelom is lined on all sides by

A) ectoderm

B) mesoderm

C) endoderm

D) Both [a] and [b]

• question_answer136) Mating of an organism to a double recessive in order to determine wither it is homozygous or heterozygous for character under consideration is called

A) reciprocal cross

B) test cross

C) dihybrid cross

D) back cross

• question_answer137) During meiosis$-I,$ the number of chromosomes is

A) halved

B) tripled

C) doubted

• question_answer138) Which one of the following is not a correct explanation of cross-pollination?

A) The pollen grains of male flowers are transferred to the stigma of the female flowers.

B) The pollen grains are transferred from one flower to another flower, of another plant of the same species.

C) The pollen grains are transferred from one flower to another flower situated on the same plant.

D) The pollen grains of one flower are transferred to the stigma of the same flower.

• question_answer139) DNA replication takes place during

A) S-phase

B) ${{G}_{2}}-$phase

C) ${{G}_{1}}-$phase

D) prophase

• question_answer140) A character which is expressed in a hybrid is called

A) dominant

B) recessive

C) codominant

D) epistatic

• question_answer141) World AIDS day is on

A) May 1

B) December 1

C) December 20

D) June 1

• question_answer142) Which one of the following is not a micronutrient for plants?

A) Magnesium

B) Molybdenum

C) Boron

D) Zinc

• question_answer143) Conditions of a karyotype$2n+/-2$and $2n\text{ +}/-2$are called

A) aneuploidy

B) polypioidy

C) autopolyloidy

D) monosomy

• question_answer144) The idea of Natural Selection as the fundamental process of evolutionary changes was reached

A) independently by Charles Darwin and Alfred Russel Wallace in 1900

B) By diaries Darwin in 1866

C) By Alfred Russel Wallace in 1901

D) independently by Charles Darwin and Alfred Russel Wallace in 1859

• question_answer145) Genes for cytoplasmic male sterility in plants are generally located in

A) nuclear-genome

B) mitochondrial genome

C) chloroplast genome

D) cytosol

• question_answer146) The first body segment of earthworm is

A) peristome

B) peristomium

C) protostomium

D) protostome

• question_answer147) Arrange the following in ascending order of Linnaean hierarchy.

A) Kingdom - Phylum - Class - Order - Family - Genus - Species

B) Kingdom - Family - Genus - Species - Class - Phylum - Order

C) Kingdom - Order - Species - Genus - Class - Family - Phylum

D) Species - Genus - Family - Order - Class - Phylum-Kingdom

• question_answer148) Concentration of the urine is controlled by

A) MSH

C) Oxytocin

D) ACTH

• question_answer149) Double fertilisation involves

A) fertilisation of the egg by two male gametes

B) fertilisation of two eggs in the same embryo sac by two sperms brought by one pollen tube

C) fertilisation of the egg and the central cell by two sperms brought by different pollen tubes

D) fertilisation of the egg and the central cell by two sperms brought by the same pollen tube

• question_answer150) Yeast is used in the production of

A) bread and beer

B) cheese and butter

C) citric acid and lactic acid

D) lipase and pectinase

• question_answer151) Which one of the following statements is/are correct?

A) FSH and LH occur in both males and females

B) FSH and LH stimulate the follicle to secrete oestrogen

C) The ovarian cycle depends on the blood. levels of FSH and LH

D) All of these are correct

• question_answer152) The letter T in T-lymphocyte refers to

A) thymus

B) thyroid

C) tonsil

D) thalamus

• question_answer153) Plant species having a wide range of genetical distribution evolve into a local population known as

A) ecotype

B) biome

C) ecosystem

D) population

• question_answer154) Bacteria cannot survive in a highly salted pickle because

A) salt inhibits reproduction of bacteria

B) enough light is available for photosynthesis

C) they become plasmolysed and death occurs

D) nutrients in the pickle medium cannot support life

• question_answer155) The blood does not clot inside the body because of

A) oxygenation of blood

B) movement of blood

C) presence of heparin in blood

D) absence of fibrinogen in blood

• question_answer156) Which one of the following is the most abundant protein in the animal world?

A) Collagen

B) Insulin

C) Trypsin

D) Haemoglobin

• question_answer157) The function of leghaemoglobin in the root nodules of legumes is

A) oxygen removal

B) inhibition of nitrogenase activity

C) expression of nif gene

D) nodule differentiation

• question_answer158) Which of the following is a bacterium involved in denitrification?

A) Azotobacter

B) Nitrosomonas

C) PsQudomonas

D) Nitrobacter

• question_answer159) There are .......... pairs of cranial nerves arising from the brain of human beings.

A) 8

B) 12

C) 18

D) 25

• question_answer160) Which one of the following membranes secretes a watery fluid that lubricates and cushions the joint?

A) Tendons

B) Ligaments

C) Cartilage

D) Synovial membrane

• question_answer161) Which one of the following causes the mammary glands to enlarge at puberty?

A) Testosterone

B) Progesterone

C) Oestrogen

D) Oxytocip

• question_answer162) Phenotype of an organism is the result of

A) environmental changes and sexual dimorphism

B) cytoplasmic effects and nutrition

C) mutations and linkages

D) genotype and environment interactions

• question_answer163) The Ley dig cells found in the human body are the secretory source of

A) glucagon

B) androgens

C) progesterone

D) intestinal mucus

• question_answer164) Which one of the following statements is not true with respect to viability of mammalian sperm?

A) Viability of sperm is determined by its motility.

B) Sperms must be concentrated in a thick suspension.

C) Sperm is viable for only up to 24 hours.

D) Survival of the sperm depends on the pH of the medium and it is most active in alkaline pH.

• question_answer165) In a lake phytoplankton grow in abundance in

A) littoral zone

B) limnetic zone

C) profundal zone

D) benthic region

• question_answer166) Examples of secondary air pollutants is /are

A) Smog

B) ${{O}_{3}}$

C) PAN

D) All of these

• question_answer167) Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as

A) migration

B) divergent evolution

D) natural section

• question_answer168) The monocotyledonous seed consists of one large and shield shaped cotyledon known as a/an

A) coleoptile

B) scutellum

C) aleurone layer

D) coleorhiza

• question_answer169) Closed vascular bundles lack

A) cambium

B) pith

C) ground tissue

D) conjunctive tissue

• question_answer170) Restriction endonucleases

A) are synthesised by bacteria as part of their defense mechanism

B) are used for in vitro DNA synthesis

C) are used in genetic engineering for ligation of two DNA molecules

D) are present in mammalian cells for degradation of DNA when the cell dies

• question_answer171) In five kingdom classification single celled eukaryotes are included in

A) Fungi

B) Protista

C) Monera

D) Archaea

• question_answer172) Emulsification of fat occurs by

A) bile salts

B) bile pigments

C) pancreatic juice

D) succus entericus

• question_answer173) In Mendels experiments with garden pea, round seed shape (RR) was dominant over wrikled seed (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the ${{F}_{2}}-$generation of the cross $RRYY\times rryy$?

A) Only wrinkled seeds with green cotyledons

B) Only wrinkled seeds with yellow cotyledons

C) Only round seeds with green cotyledons

D) Round seeds with yellow cotyledons, round seeds with green cotyledons, wrinkled seeds with yellow cotyledons and wrinkled seeds with green cotyledons

• question_answer174) The biological control of agricultural pests unlike chemical control is

A) very expensive

B) polluting

C) self perpetuating

D) toxic

• question_answer175) AIDS is caused by

A) blood cancer

B) TMV

C) bacterium

D) human immunodeficiency virus

• question_answer176) Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin?

A) Monocytes

B) Neutrophils

C) Basophils

D) Eosinophils

• question_answer177) The catalytic efficiency of two different enzymes can be compared by the

A) molecular size of the enzymes

B) pH optimum values

C) Km values

D) formation of the product

• question_answer178) The enzyme responsible for primary carboxylation in${{C}_{3}}-$plants is

A) pyruvate carboxylase

B) succinic dehydrogenase

C) hexokinase

D) RuBP carboxylase /oxygenase

• question_answer179) Which of the following enzymes is used to join DNA fragments?

A) DNA polymerase

B) Ligase

C) Prirnase

D) Endonuclease

• question_answer180) The word species was coined by

A) Aristotle

B) Linnaeus

C) John Ray

D) Engler

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