Solved papers for JCECE Medical JCECE Medical Solved Paper-2014

done JCECE Medical Solved Paper-2014

• question_answer1) A mass of 0.5 kg moving with a speed of $1.5\,\text{m}{{\text{s}}^{-1}}$on a horizontal smooth surface, collides with a nearly weightless spring of force constant$\text{k}\,\text{=}\,\text{50}\,\text{N}{{\text{m}}^{-1}}.$The maximum compression of the spring would be

A) 0.15 m

B) 0.23 m

C) 1.6 m

D) 0.4 m

• question_answer2) A particle of mass ${{m}_{1}}$moves with velocity${{\upsilon }_{1}}$ and collides with another particle at rest of equal mass. The velocity of the second particle after the elastic collision is

A) $3{{v}_{1}}$

B) ${{v}_{1}}$

C) $-{{v}_{1}}$

D) $0$

• question_answer3) The ratio of the radii of gyration of a circular disc to that of a circular ring, each of same mass and radius, around their respective axis is

A) $\sqrt{3}:\sqrt{2}$

B) $1:\sqrt{2}$

C) $\sqrt{3}:1$

D) $\sqrt{5}:\sqrt{3}$

• question_answer4) A wheel having moment of inertia $2\,\text{kg}-{{m}^{2}}$ about its vertical axis, rotates at the rate of 60 rpm about this axis. The torque which can stop the wheels rotation in one minute would be

A) $\frac{2\pi }{13}N-m$

B) $\frac{\pi }{14}N-m$

C) $\frac{\pi }{15}N-m$

D) $\frac{\pi }{20}N-m$

• question_answer5) A sphere of diameter 0.2 m and mass 2 kg is rolling on an inclined plane with velocity $\upsilon =0.5\,m{{s}^{-1}}.$The kinetic energy of the sphere is

A) $0.4\,J$

B) $0.3\,J$

C) $0.6\,J$

D) $0.42\,J$

• question_answer6) If a sphere rolling on an inclined plane with velocity $\upsilon$ without slipping, the vertical height of the incline in terms of velocity will be

A) $\frac{7v}{10g}$

B) $\frac{7{{v}^{2}}}{10g}$

C) $\frac{2{{v}^{2}}}{5g}$

D) $\frac{3v}{5g}$

• question_answer7) The height vertically above the earths surface at which the acceleration due to gravity becomes 1% of its value at the surface is (R is the radius of the earth)

A) QR

B) 9R

C) 10R

D) 20R

• question_answer8) The motion of a particle executing SHM in one dimension is described by $x=-0.3\sin \left( t+\frac{\pi }{4} \right).$ where, $x$ is in metre and t in second. The frequency of oscillation in Hz is

A) 3

B) $\frac{1}{2\pi }$

C) $\frac{\pi }{2}$

D) $\frac{1}{\pi }$

• question_answer9) The change in the gravitational potential energy when a body of mass m is raised to a height $nR$above the surface of the earth is (here, R is the radius of the earth)

A) $\left( \frac{n}{n+1} \right)mgR$

B) $\left( \frac{n}{n-1} \right)mgR$

C) $nmgR$

D) $\frac{mgR}{n}$

• question_answer10) A satellite is rotating around a planet in the orbit of radius r with time period T. If gravitational force changes according to ${{r}^{5/2}},$the ${{T}^{2}}$will be

A) $\propto {{r}^{3}}$

B) $\propto {{r}^{7/2}}$

C) $\propto {{r}^{9/2}}$

D) $\propto {{r}^{3/2}}$

• question_answer11) A liquid X of density $3.36\,g/c{{m}^{3}}$is poured in a U-tube in right arm with height 10 cm, which contains Hg. Another liquid Y is poured in left arm with height 8 cm. Upper levels of X and Y are same. What is the density of Y?

A) $0.8g/cc$

B) $1.2g/cc$

C) $1.4g/cc$

D) $1.6g/cc$

• question_answer12) Water flows along a horizontal pipe whose cross-section is not constant. The pressure is 1 cm of Hg, where the velocity is 3$35\,\text{cm}{{\text{s}}^{-1}}.$At a point where the velocity is $65\,\text{cm}{{\text{s}}^{-1}},$ the pressure will be

A) 0.89 cm of Hg

B) 8.9 cm of Hg

C) 0.5 cm of Hg

D) 1 cm of Hg

• question_answer13) A lead bullet of unknown mass is fired with a speed of 180 ms~1 into a tree in which it stops. Assuming that in this process two-third of heat produced goes into the bullet and one-third into wood. The temperature of the bullet rises by

A) $140{{\,}^{o}}C$

B) $106{{\,}^{o}}C$

C) $90{{\,}^{o}}C$

D) $100{{\,}^{o}}C$

• question_answer14) The freezer in a refrigerator is located at the top section so that

A) the entire chamber of the refrigerator is cooled quickly due to convection

B) the motor is not heated

C) the heat gained from the environment is high

D) the heat gained from the environment is low

• question_answer15) Two monoatomic ideal gases A and B occupying the same volume V are at the same temperature T and pressure p. If they are mixed, the resultant mixture has volume V and temperature T. The pressure of the mixture is

A) p

B) $\frac{p}{2}$

C) $4p$

D) $2p$

• question_answer16) The temperature at which the mean KE of the molecules of gas is one-third of the mean KE of its molecules at $180{{\,}^{o}}C$is

A) $~-122{{\,}^{o}}C$

B) $-90{{\,}^{o}}C$

C) $~60{{\,}^{o}}C$

D) $151{{\,}^{o}}C$

• question_answer17) U is the PE of an oscillating particle and F is the force acting on it at a given instant. Which of the following is true?

A) $\frac{U}{F}+x=0$

B) $\frac{2U}{F}+x=0$

C) $\frac{F}{U}+x=0$

D) $\frac{F}{2U}+x=0$

• question_answer18) The density of newly discovered planet is twice that of the earth. The acceleration due to gravity at the surface of the planet is equal to that at the surface of the earth. If the radius of the earth is R, the radius of the plane would be

A) $2R$

B) $4R$

C) $\frac{1}{4}R$

D) $\frac{1}{2}R$

• question_answer19) The half-life period of a radioactive substance is 140 days. After, how much time, 15 g will decay from a 16 g sample of the substance?

A) 140 days

B) 280 days

C) 420 days

D) 560 days

• question_answer20) A tuning fork A produces 4 beats ${{s}^{-1}}$ with another tuning fork B of frequency 320 Hz. On filing one of the prongs of A, 4 beats ${{s}^{-1}}$are again heard when sounded with the same fork B. Then, the frequency of the fork A before filing is

A) 328 Hz

B) 316 Hz

C) 324 Hz

D) 320 Hz

• question_answer21) Two cars are moving on two perpendicular roads towards a crossing with uniform speeds of 72 km/h and 36 km/h. If first car blows horn of frequency 280 Hz, then the frequency of horn heard by the driver of second car when line joining the car makes angle of ${{45}^{o}}$ with the roads, will be

A) 321 Hz

B) 298 Hz

C) 289 Hz

D) 280 Hz

• question_answer22) A particle moves along a straight line OX. At a time t (in second) the distance x of the particle from O is given by $x=40+12t-{{t}^{3}}.$ How long would the particle travel before coming to rest?

A) 24 m

B) 40 m

C) 56 m

D) 16 m

• question_answer23) The capacitance of a spherical conductor with radius 1m is

A) $9\times {{10}^{-9}}F$

B) $1\,\mu F$

C) $1.1\times {{10}^{-10}}F$

D) $1\times {{10}^{-6}}F$

• question_answer24) The electric field due to an electric dipole at a distance r from its centre in axial position is E. If the dipole is rotated through an angle of ${{90}^{o}}$about its perpendicular axis, the electric field at the same point will be

A) E

B) $\frac{E}{4}$

C) $\frac{E}{2}$

D) 2E

• question_answer25) Choose the correct statement.

A) When we heat a semiconductor its resistance increases

B) When we heat a semiconductor its resistance decreases

C) When we cool a semiconductor to 0 K, then it becames superconductor

D) Resistance of a semiconductor is independent of temperature

• question_answer26) A charge q coulomb makes n revolutions in one second in a circular orbit of radius r. The magnetic field at the centre of the orbit in $N{{A}^{-1}}{{m}^{-1}}$

A) $\frac{2\pi rn}{q}\times {{10}^{-7}}$

B) $\left( \frac{2\pi q}{r} \right)\times {{10}^{-7}}$

C) $\left( \frac{2\pi q}{nr} \right)\times {{10}^{-7}}$

D) $\left( \frac{2\pi nq}{r} \right)\times {{10}^{-7}}$

• question_answer27) The path of an electron in a uniform magnetic field may be

A) circular but not helical

B) helical but not circular

C) neither helical nor circular

D) either helical or circular

• question_answer28) The couple acting on a magnet of length 10 cm and pole strength 125 A-m, kept in a field of $B=2\times {{10}^{-5}}T,$at an angle of ${{30}^{o}}$ is

A) $1.5\times {{10}^{-5}}N-m$

B) $1.5\times {{10}^{-3}}N-m$

C) $1.5\times {{10}^{-2}}N-m$

D) $1.5\times {{10}^{-6}}N-m$

• question_answer29) X and Y, two metallic coils are arranged in such a way that, when steady change in current flowing in X coil is 4 A, change in magnetic flux associated with coil Y is 0.4Wb. Mutual inductance of the system of these coils is

A) 0.2 H

B) 5H

C) 0.8 H

D) 0.1 H

• question_answer30) A sinusoidal voltage of peak value 300 V and an angular frequency $\omega =400\,\text{rad/s}$is applied to series L-C-R circuit, in which $R=3\Omega ,\,L=20\,mH$and $C=652\mu F.$The peak current in the circuit is

A) $30\sqrt{2}A$

B) $60\,A$

C) $100\,A$

D) $60\sqrt{2}\,A$

• question_answer31) A fire screen produces sensation of cooling as

A) it allows both infrared and visible light but cuts off ultraviolet

B) it allows infrared and cuts off shorter wavelengths

C) it cuts off both visible light and infrared

D) it allows only visible light and cuts off infrared

• question_answer32) If the angle of incidence is twice the angle of refraction in a medium of refractive index$\mu ,$ then the angle of incidence is

A) $2{{\cos }^{-1}}\frac{\mu }{2}$

B) $2{{\sin }^{-1}}\frac{\mu }{2}$

C) $2{{\cos }^{-1}}\mu$

D) $2{{\sin }^{-1}}\mu$

• question_answer33) The magnification produced by an astronomical telescope for normal adjustment is 10 and the length of the telescope is 1.1 m. The magnification, when the image is formed atleast distance of distinct vision is

A) 6

B) 14

C) 16

D) 18

• question_answer34) In Youngs double slit experiment with sodium vapour lamp of wavelength 589 nm and the slits 0.589 mm apart, the half angular width of the central maximum is

A) ${{\sin }^{-1}}(0.01)$

B) ${{\sin }^{-1}}(0.0001)$

C) ${{\sin }^{-1}}(0.001)$

D) ${{\sin }^{-1}}(0.1)$

• question_answer35) When the angle of incidence is ${{60}^{o}}$ on the surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is

A) $\sqrt{2}\times {{10}^{8}}m{{s}^{-1}}$

B) $\sqrt{3}\times {{10}^{8}}m{{s}^{-1}}$

C) $2\times {{10}^{8}}m{{s}^{-1}}$

D) $3\times {{10}^{8}}\,m{{s}^{-1}}$

• question_answer36) Cathode rays of velocity ${{10}^{6}}m{{s}^{-1}}$describe an approximate circular path of radius 1 m in an electric field $300\,Vc{{m}^{-1}}.$ If the velocity of the cathode rays are doubled. The value of electric field so that the rays describe the same circular path, will be

A) $~2400\text{ }Vc{{m}^{-1}}$

B) $600\text{ }Vc{{m}^{-1}}$

C) $~1200\,Vc{{m}^{-1}}$

D) $~12000\text{ }V\,c{{m}^{-1}}$

• question_answer37) The de-Broglie wavelength of an electron and the wavelength of a photon are the same. The ratio between the energy of that photon and the momentum of that electron is (c = velocity of light, h = Plancks constant)

A) $h$

B) $c$

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

D) $\frac{1}{c}$

• question_answer38) When 1 cm thick surface is illuminated with light of wavelength$\lambda ,$ the stopping potential is V. When the same surface is illuminated by light of wavelength 2X, the stopping potential is$\frac{V}{3}.$ Threshold wavelength for metallic surface is

A) $\frac{4\lambda }{3}$

B) $4\lambda$

C) $6\lambda$

D) $\frac{8\lambda }{3}$

• question_answer39) For photoelectric emission, tungsten requires light of $2300\,\,\overset{\text{o}}{\mathop{\text{A}}}\,.$ If light of $\text{1800}\overset{\text{o}}{\mathop{\text{A}}}\,$wavelength is incident, then emission

A) takes place

B) doesnt take place

C) may or may not take place

D) depends on frequency

• question_answer40) X-rays are used in determining the molecular structure of crystalline, because

A) its energy is high

B) it can penetrate the material

C) its wavelength is comparable to interatomic distance

D) its frequency is low

• question_answer41) The frequency of vibration of string is given by $v=\frac{p}{2l}{{\left[ \frac{F}{m} \right]}^{1/2}}$ Here, p is the number of segments in the string and $l$is the length. The dimensional formula for $m$will be

A) $[{{M}^{0}}L{{T}^{-1}}]$

B) $[M{{L}^{0}}{{T}^{-1}}]$

C) $[M{{L}^{-1}}{{T}^{0}}]$

D) $[{{M}^{0}}{{L}^{0}}{{T}^{0}}]$

• question_answer42) A stone is thrown vertically upwards. When the stone is at a height equal to half of its maximum height its speed will be 10 m/s, then the maximum height attained by the stone is (Take$g=10\,m/{{s}^{2}}$)

A) 3 m

B) 15 m

C) 1 m

D) 10 m

• question_answer43) A string of length$l$fixed at one end carries a mass m at the other end. The string makes $\frac{2}{\pi }rev/s$around the horizontal axis through the fixed end as shown in the figure, the tension in the string is

A) $16\,ml$

B) $6\,ml$

C) $5\,ml$

D) $3\,ml$

• question_answer44) A gardener pushes a lawn roller through a distance 20 m. If he applies a force of 20 kg-wt in a direction inclined at ${{60}^{o}}$ to the ground, the work done by him is

A) 1960J

B) 196J

C) 1.96 J

D) 196kJ

• question_answer45) The breaking stress of a wire depends upon

A) material of wire

B) length of wire

C) radius of wire

D) shape of cross-section

• question_answer46) Li nucleus has three protons and four neutrons. Mass of lithium nucleus is 7.016005 amu. Mass of proton is 1.007277 amu and mass of neutron is 1.008665 amu. Mass defect for lithium nucleus in amu is

A) 0.04048

B) 0.04050

C) 0.04052

D) 0.04055

• question_answer47) A voltmeter of range 2V and resistance $300\,\Omega$ cannot be converted into ammeter of range

A) 1 A

B) 1 mA

C) 100 mA

D) 10 mA

• question_answer48) The values of two resistors are ${{R}_{1}}=(6+0.3)k\Omega$ and ${{R}_{2}}=(10\,\pm \,0.2)k\Omega .$The percentage error in the equivalent resistance when, they are connected is parallel is

A) 5.125%

B) 2%

C) 10.125%

D) 7%

• question_answer49) A body of mass 2 kg is projected from the ground with a velocity $20\,m{{s}^{-1}}$at an angle ${{30}^{o}}$ with the vertical. If${{t}_{1}}$ is the time in second at which of the body is projected and ${{t}_{2}}$ is the time in second at which it reaches the ground, the change in momentum in $\text{kgm}{{\text{s}}^{-1}}$ during the time$({{t}_{2}}-{{t}_{1}})$is

A) $40\sqrt{2}$

B) $40\sqrt{3}$

C) $25\sqrt{3}$

D) 45

• question_answer50) The position vector of a particle is $r=(\alpha \cos \omega t)\hat{i}+(a\,\sin \,\omega t)\hat{j}.$The velocity vector of the particle is

A) parallel to position vector

B) perpendicular to position vector

C) directed towards the origin

D) directed away from the origin

• question_answer51) The major product of the reaction between $m-$dinitrobenzene and $N{{H}_{4}}HS$is

A)

B)

C)

D)

• question_answer52) Correct order of nucleophilicity is

A) $CH_{3}^{-}<NH_{2}^{-}<O{{H}^{-}}<{{F}^{-}}$

B) ${{F}^{-}}<O{{H}^{-}}<CH_{3}^{-}<NH_{2}^{-}$

C) $O{{H}^{-}}<NH_{2}^{-}<{{F}^{-}}<CH_{3}^{-}$

D) ${{F}^{-}}<O{{H}^{-}}<NH_{2}^{-}<CH_{3}^{-}$

• question_answer53) The main product of the reaction would be 2-butene + chloroform$\,\xrightarrow{\text{NaOH}}$?

A) butanoic acid

B) 2-methyl butanoic acid

C) $1,1,1-$trichloro$-2-$methyl butane

D) $1.4-$butanediol

• question_answer54) The end product of $C{{H}_{3}}COOH\xrightarrow{CaC{{O}_{3}}}A\xrightarrow{Heat}B\xrightarrow{N{{H}_{2}}OH}C$

A) acetaldehyde

B) acetoxime

C) formaldehyde

D) methylcyanide

• question_answer55) Calorific value is in the order

A) Fats > Carbohydrates > Proteins

B) Carbohydrates > Fats > Proteins

C) Proteins > Carbohydrates > Fats

D) Fats > Proteins > Carbohydrates

• question_answer56) The monomeric unit of orlon molecule is

A) $C{{H}_{2}}=CH-Cl$

B) $C{{H}_{3}}COO-CH=C{{H}_{2}}$

C) $C{{H}_{2}}-CH-CN$

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

• question_answer57) Which of the following acids possesses oxidising, reducing and complex forming properties?

A) $HCl$

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

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

D) $HN{{O}_{3}}$

• question_answer58) Cassiterite is concentrated by

A) levigation

B) electromagnetic separation

C) floatation.

D) liquefaction

• question_answer59) The stability of the following alkali metal chlorides follows the order

A) $LiCl>KCl>NaCl>CsCl$

B) $CsCl>KCl>NaCl>LiCl$

C) $NaCl>KCl>LiCl>CsCl$

D) $KCl>CsCl>NaCl>LiCl$

• question_answer60) The complex ${{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}$ is formed in the brown ring test for nitrates when freshly prepared $\text{FeS}{{\text{O}}_{\text{4}}}$solution is added to aqueous solution of $\text{NO}_{3}^{-}$followed by addition of conc. ${{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\text{.}$Select the correct statement about this complex.

A) Colour change is due to charge transfer

B) It has iron in+1 oxidation state and nitrosyl as $\text{N}{{\text{O}}^{+}}.$

C) It has magnetic moment of 3.87 BM confirming three unpaired electrons in Fe

D) All the above are correct statements

• question_answer61) Consider the following statements.

 (i) Colour of a transition metal complex is dependent on energy difference, between two d-levels. (ii) Colour of the complex is dependent on the nature of the ligand and the type of complex formed. (iii) $\text{ZnS}{{\text{O}}_{\text{4}}}$and $\text{Ti}{{\text{O}}_{\text{2}}}$are white as in both, d-d spectra are impossible.
Select the correct statements.

A) I, If and III

B) I and II

C) II and III

D) I and III

• question_answer62) The outermost electronic configuration of the most electronegative element is

A) $n{{s}^{2}}n{{p}^{3}}$

B) $n{{s}^{2}}n{{p}^{4}}$

C) $n{{s}^{2}}n{{p}^{5}}$

D) $n{{s}^{2}}n{{p}^{6}}$

• question_answer63) Standard enthalpy and standard entropy change for the oxidation of $\text{N}{{\text{H}}_{\text{3}}}$at 298 K are $-382.64\,\text{kJ}\,\text{mo}{{\text{l}}^{-1}}$and$-145.6\,\text{J}\,\text{mo}{{\text{l}}^{-1}}$ respectively. Standard Gibbs energy change for the same reaction at 298 K is

A) $+\,339.3\text{ kJ}\,\text{mo}{{\text{l}}^{-1}}$

B) $~-\text{ }439.3\text{ kJ}\,\text{mo}{{\text{l}}^{-1}}$

C) $-\text{ }339.3\text{ kJ mo}{{\text{l}}^{-1}}$

D) $~-\text{ }393.3\text{ kJ mo}{{\text{l}}^{-1}}$

• question_answer64) According to the Arrhenius equation, a straight line is to be obtained by plotting the logarithm of the rate constant of a chemical reaction $(\log \,k)$ against

A) T

B) $\log \,T$

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

D) $\log \frac{1}{T}$

• question_answer65) Which of the following is not a reducing agent?

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

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

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

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

• question_answer66) For a dilute solution, Raoults law states that

A) the lowering of vapour pressure is equal to the mole fraction of the solute

B) the relative lowering of vapour pressure is equal to the mole fraction of solute

C) the relative lowering of vapour pressure is equal to the amount of the solution

D) the vapour pressure of the solution is equal to the mole fraction of the solvent

• question_answer67) The bond dissociation energies of gaseous ${{\text{H}}_{\text{2}}}\text{,C}{{\text{l}}_{\text{2}}}$and$\text{HCl}$ are 104, 58 and 103 kcal respectively. The enthalpy of formation of $\text{HCl}$gas would be

A) $~-\text{ }44\text{ kcal}$

B) $44\text{ kcal}$

C) $~-\text{ }22\text{ kcal}$

D) $\text{ }\!\!~\!\!\text{ 22 kcal}$

• question_answer68) Species acting both as Bronsted acid and base is

A) $HSO_{4}^{-}$

B) $N{{a}_{2}}C{{O}_{3}}$

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

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

• question_answer69) The solubility of $\text{Agl}$in $\text{Nal}$solution is less than that in pure water because

A) $\text{ }\!\!~\!\!\text{ Agf}$ forms complex with $\text{Nal}$

B) of common ion effect

C) solubility product of $\text{Agl}$is less

D) the temperature of the solution decreases

• question_answer70) $\text{Zn }\!\!|\!\!\text{ Z}{{\text{n}}^{\text{2+}}}\text{(a}\,\text{=}\,\text{0}\text{.1M) }\!\!|\!\!\text{ }\!\!|\!\!\text{ F}{{\text{e}}^{\text{2+}}}\text{(a}\,\text{=}\,\text{0}\text{.01}\,\text{M) }\!\!|\!\!\text{ Fe}\text{.}$The emf of the above cell is 0.2905 V. Equilibrium constant for the cell reaction is

A) ${{10}^{0.32/0.0591}}$

B) ${{10}^{0.32/0.0295}}$

C) ${{10}^{0.26/0.0295}}$

D) ${{10}^{0.32/0.295}}$

• question_answer71) 50 mL of 1 M oxalic acid (molar mass =126) is shaken with 0.5 g of wood charcoal. The final concentration of the solution after adsorption is 0.5 M. What is the amount of oxalic acid adsorbed per gram of carbon?

A) 3.15

B) (6) 1.575

C) 6.30

D) 12.60

• question_answer72) A dust particle has mass equal to${{10}^{-11}}g,$ diameter${{10}^{-4}}cm$ and velocity ${{10}^{-4}}cm/s.$The error in measurement of velocity is $0.1%.$ What will be the uncertainty in its position?

A) $~0.527\times {{10}^{10}}\text{ }cm$

B) $~5.27\times {{10}^{9}}\text{ }cm$

C) $0.527\times {{10}^{-15}}cm$

D) $0.527\times {{10}^{-9}}cm$

• question_answer73) The value of compression factor, Z for critical constants is

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

B) $\frac{3}{4}$

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

D) $\frac{3}{8}$

• question_answer74) At what. temperature, the rms velocity of $\text{S}{{\text{O}}_{\text{2}}}$be same as that of ${{\text{O}}_{2}}$at 303 K?

A) 273 K

B) 606 K

C) 303 K

D) 403 K

• question_answer75) The percentage of water of crystallisation of a sample of blue vitriol is

A) 34.07%

B) 35.07%

C) 36.07%

D) 37.07%

• question_answer76) Which of the following series of elements have nearly the same atomic radii?

A) $\text{ }\!\!~\!\!\text{ F, Cl, Br, I}$

B) $\text{ }\!\!~\!\!\text{ Na, K, Rb, Cs}$

C) $\text{Li,}\,\text{Be,}\,\text{B,}\,\text{C}$

D) $\text{ }\!\!~\!\!\text{ Fe, Co, Ni, Cu}$

• question_answer77) The volume strength of 1 molar solution of ${{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}$ is

A) 11.2

B) 22.4

C) 5.6

D) 56

• question_answer78) Maximum amount of carbon is present in

A) wrought iron

B) cast iron

C) stainless steel

D) German silver

• question_answer79) What is the best way to carry out the following transformation? $1-\text{pentyne}\,\xrightarrow{{}}\text{ pentanal}$

A) $HgS{{O}_{4}}/{{H}_{2}}S{{O}_{4}}$

B) ${{H}_{2}}/$Lindlars catalyst;${{O}_{3}};Zn-{{H}_{2}}O$

C) $Hl{{O}_{4}}/{{H}_{2}}O$

D) $B{{H}_{3}};{{H}_{2}}{{O}_{2}}/NaOH$

• question_answer80) Product of this reaction is

A)

B)

C)

D)

• question_answer81) Etherates are

A) ethers

B) solution in ether

C) complexes of ethers with Lewis acid

D) complexes of ethers with Lewis base

• question_answer82) Tranquillisers are the substances used for the treatment of .

A) cancer

B) AIDS

C) mental diseases

D) physical disorders

• question_answer83) Which of the following carbonyl compounds on condensation gives an aromatic compound?

A) $C{{H}_{3}}CHO$

B) $HCHO$

C) $C{{H}_{3}}COC{{H}_{3}}$

D) $C{{H}_{3}}C{{H}_{2}}CHO$

• question_answer84) Iron crystallises in a bcc system with a lattice parameter of $\text{2}\text{.861}\,\overset{\text{o}}{\mathop{\text{A}}}\,.$ Calculate the density of iron in the bcc system (atomic weight of $\text{Fe}=56,{{\text{N}}_{\text{A}}}=6.02\times {{10}^{23}}\,\text{mo}{{\text{l}}^{-}}$).

A) $7.94g\,m{{L}^{-1}}$

B) $8.96\text{g}\,\text{m}{{\text{L}}^{-1}}$

C) $2.78\text{g}\,\text{m}{{\text{L}}^{-1}}$

D) $6.72\text{g}\,\text{m}{{\text{L}}^{-1}}$

• question_answer85) Which particle among the following will have the smallest de-Broglie wavelength, assuming that they have the same velocity?

A) A positron

B) A photon

C) An a-particle

D) A neutron

• question_answer86) The equilibrium constant for the reaction, ${{H}_{2}}(g)+{{I}_{2}}(g)2HI(g)$is 64. If the volume of the container is reduced to half of the original volume, the value of the quilibrium constant will be

A) 16

B) 32

C) 64

D) 128

• question_answer87) For the reaction, $Zn(s)+C{{u}^{2+}}(0.1\,M)\xrightarrow{{}}Z{{n}^{2+}}(1M)+Cu(s)t$ aking place in a cell;$E_{cell}^{o}$ is$1.10\,V.{{E}_{cell}}$ for the cell will be $\left( 2.303\frac{RT}{F}=0.0591 \right)$

A) $~1.80\,V$

B) $~1.07\,V$

C) $0.82\,V$

D) $2.14\,V$

• question_answer88) Surface of the eye is protected from bacterial infection by enzyme

A) carbonic enhydrase

B) urease

C) lysozyme

D) zymase

• question_answer89) The number of $\sigma$bons in ${{P}_{4}}{{O}_{10}}$is

A) 6

B) 16

C) 20

D) 7

• question_answer90) Indicate the wrongly named compound.

A) $\underset{(4-\text{methyl}-1-\text{pentanal})}{\mathop{C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}-C{{H}_{2}}-CHO}}\,$

B) $\underset{(4-\text{methyl}-2-\text{pentyn}-1-\text{oic}\,\text{acid})}{\mathop{C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C\equiv C-COOH}}\,$

C) $\underset{(2-\text{methyl}-1-\text{pentynoic acid})}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-COOH}}\,$

D) $\underset{(3-hexen-5-one)}{\mathop{C{{H}_{3}}C{{H}_{2}}-CH=CH-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}}}\,$

• question_answer91) Identify the vitamin whose deficiency in our blood decreases reproductive power?

A) Vitamin E

B) Vitamin D

C) Vitamin A

D) Vitamin C

• question_answer92) Give the major product of the following reaction,

A)

B)

C)

D) Cannot say

• question_answer93) Phenol $\xrightarrow[(ii)\,C{{O}_{2}}/140{{\,}^{o}}C]{(i)\,NaOH}A\xrightarrow[{}]{{{H}^{+}}/{{H}_{2}}O}B\xrightarrow{{{A}_{{{c}_{2}}}}O}C$ In this reaction, the end product C is

A) salicylaldehyde

B) salicylic acid

C) phenyl acetate

D) aspirin

• question_answer94) What will be the degree of ionisation of 0.05 M acetic acid if its $\text{p}{{\text{K}}_{\text{a}}}$value is 4.74?

A) 0.019%

B) 1.9%

C) 3.0%

D) 4.74%

• question_answer95) Which of the reactions defines$\Delta H_{f}^{o}$

A) ${{C}_{\text{diamond}}}+{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)$

B) $\frac{1}{2}{{H}_{2}}(g)+\frac{1}{2}{{F}_{2}}(g)\xrightarrow{{}}HF(g)$

C) ${{N}_{2}}(l)+3{{H}_{2}}(g)\xrightarrow{{}}2N{{H}_{3}}(g)$

D) $CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)$

• question_answer96) The equivalent weight of $\text{N}{{\text{a}}_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{3}}}$in the following reaction is $2N{{a}_{2}}{{S}_{2}}{{O}_{3}}+{{I}_{2}}\xrightarrow{{}}N{{a}_{2}}{{S}_{4}}{{O}_{6}}+2NaI$

A) M

B) M/8

C) M/0.5

D) M/2

• question_answer97) The half-life period for first order reaction having activation energy $39.3\,\text{kcal}\,\text{mo}{{\text{l}}^{-1}}$ at $\text{300}{{\,}^{\text{o}}}\text{C}$and frequency constant $1.11\times {{10}^{11}}\,{{s}^{-1}}$ will be

A) 1 h

B) 1.68 h

C) 1.28 h

D) 1.11 h

• question_answer98) Water is brought to boil under a pressure of 1.0 atm. When an electric current of 0.50 A from a 12 V supply is passed for 300 s through a resistance in thermal contact with it, it is found that 0.798 g of water is vaporised. Calculate the molar internal energy change at boiling point (373.15 K).

A) $37.5\,kJ\,mo{{l}^{-1}}$

B) $3.75\,kJ\,mo{{l}^{-1}}$

C) $42.6\,kJ\,mo{{l}^{-1}}$

D) $4.26\,kJ\,mo{{l}^{-1}}$

• question_answer99) The electrons, identified by quantum numbers $n$and$l,$ (i)$~n=4,l=1$ (ii)$n=4,l=0$(iii) $n=3,l=2$(iv) $n=3,l=1$ can be placed in order of increasing energy, from the lowest to highest, as

A) $(iv)<(ii)<(iii)<(i)$

B) $(ii)<(iv)<(i)<(iii)$

C) $(i)<(iii)<(ii)<(ii)$

D) $(iii)<(i)<(iv)<(ii)$

• question_answer100) At certain temperature and a total pressure of $\text{1}{{\text{0}}^{\text{5}}}\,\text{Pa,}$iodine vapours contains 40% by volume of iodine atoms. ${{K}_{p}}$ for the equilibrium, ${{I}_{2}}(g)2I(g);$will be

A) $0.67$

B) $1.5$

C) $2.67\times {{10}^{4}}$

D) $9.0\times {{10}^{4}}$

• question_answer101) Triticale obtained by crossing wheat with

A) pearl millet

B) sugarcane

C) barley

D) rye

• question_answer102) Chief totipotent cells in plants

A) cork cells

B) xylem cells

C) meristems

D) sieve tubes

• question_answer103) Epigeal germination is found in

A) gourd

B) mustard

C) tamarind

D) All of these

• question_answer104) Which one is not a neurotransmitter?

A) Epinephrine

B) Norepjnephrine

C) Cortisone

D) Acetylcholine

• question_answer105) Swimming whales are

A) benthos

B) nekton

C) Both [a] and [b]

D) plankton

• question_answer106) The protoplasm is

A) emulsion

B) colloidal

C) suspension

D) None of these

• question_answer107) Grassland with scattered trees called as

A) desert

B) deciduous rain forest

C) savanna

D) None of these

• question_answer108) Just after ${{G}_{1}}-$phase

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

B) M-phase

C) S-phase

D) None of these

• question_answer109) Foliose lichen is

B) Usnea

C) Lecanora

D) Parmelia

• question_answer110) The roots of which one plant show medicinal values, while leaves, flowers and fruits are eaten as vegetables?

B) Afeuritis fordii

C) Helianthus anauus

D) All of the above

• question_answer111) Sudden appearance of an ancestral character is

A) mutation

B) atavism

C) heredity

D) All of these

• question_answer112) Annual rings are formed by period activity of

A) vascular cambium

B) vascular elements

C) pericyle and endodermis

D) Both [a] and [b]

• question_answer113) Freemartin is an example of

A) unlike sex twins

B) sex reveral by gene

C) environmental control of sex

D) any disease

• question_answer114) Synthesis of $mRNA$and $tRNA$occurs in

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

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

C) S-phase

D) All of these

• question_answer115) Cytochrome oxidase contains

A) zn

B) Mn

C) Mg

D) Fe

• question_answer116) Arbor vitae is composed of

A) grey matter

B) white matter

C) neuroglial cells

D) AH of these

• question_answer117) In ${{\text{C}}_{\text{4}}}$plant PEP case helps in synthesis of

A) oxalocetate

B) oxafosuccinate

C) DHAP

D) phosphoglycerate

• question_answer118) Apomixis means development of plant

A) from root cuttings

B) from root and stem cuttings

C) without gamete fusion

D) All of the above

• question_answer119) Yellow colour of eyes and skin in jaundice caused by

A) bilirubin

B) biliverdin

C) yellow pigment

D) cholesterol

• question_answer120) Virus that possess transcriptase enzyme

A) corona virus

B) retrovirus

C) tonga virus

D) All of these

• question_answer121) The rbynophytes have

A) leaves like todays fern

B) flourishing group of plants

C) sporangia at the tips of thin branches

D) sporangia near the base of shoot

• question_answer122) PCR is associated with

A) DNA cloning

B) Amplification of DNA

C) (q) DNA selective replication

D) All of the above

• question_answer123) Little leaf of brinjal is caused by

A) virus

B) bacteria

C) Mycopfasma

D) fungi

• question_answer124) Lampbrush chromosomes occur in

A) salivary glands

B) lymph gland

C) oocytes

D) cancer cells

• question_answer125) Which cell organelle would not originated by endosymbiosis?

A) Mitochondria

B) Flagella

C) Nucleus

D) Chloroplasts

• question_answer126) The term New Systematics was proposed by

A) Julian Huxley

B) Bateson

C) Linnaeus

D) Darwin

• question_answer127) The inflorescence in Ocimum sanctum is

A) cyathium

B) verticullaster

C) hypanthodium

D) raceme

• question_answer128) Vitamin-K and cynocobalamine deficiency causes

A) scurvy and pernicuous anaemia

B) xerophthalmia and anaemia

C) bleeding and perniceous anaemia

D) osteomalacia and anaemia

• question_answer129) Different colour of frogs skin is controlled by

A) hormones

B) melanocytes

C) nervous system

D) Both [a] and [c]

• question_answer130) Operon concept was proposed by

A) Jacob and Monod

B) D Baltimore

C) Beadle and Tatum

D) Nirenberg and Ochowa

• question_answer131) The niche of a population is defined as

A) set of condition that interacts

B) place where it lives

C) set of conditions and resources it uses

D) geographical area that it covers

• question_answer132) In ultrasonography

A) antgen-antibody interactions occur

B) high frequency sound waves are used

C) magnetic waves are used for diagosing

D) Both [b] and [c]

• question_answer133) Which of the following is not present in the polluted water?

A) Hydrilla

B) Eichhornia

C) Cynobacteria

D) Larva of stone fly

• question_answer134) Which one of the following palindromic base sequence in DNA can be easiely cut at about the middle by some perticular RE?

A) $5-CGTTCG-3$ $3-ATCGTA-5$

B) $5-GATATG-3$ $3-CTACTA-5$

C) $5-GAATTC-3$ $3-CTTAAG-5$

D) $5-CACGTA-3$ $3-CTCAGT-5$

• question_answer135) Treatment of seed at low temperature under sufficient moisture to break its dormancy is called .

A) stratificatton

B) chelation

C) vernalisation

D) scarification

• question_answer136) Phenotype of an organism is the result of

A) environmental changes and sexual dimorphism

B) genotype and environmental interactions

C) cytoplasms effects and nutrition

D) linkages and mutations

• question_answer137) Conifers differ from grasses in the

A) production of seed from ovules

B) lack of xylem tracheids

C) absence of pollen tubes

D) formation of endosperm before fertilization

• question_answer138) Angiotensinogen is a protein produced and secreted by

A) macula dense cells

B) endothelial cells (cells lining the blood vessels)

C) liver cells

D) cells of juxta glomerular

• question_answer139) Periderm is formed by

A) phellem

B) phelloderm

C) phellogen

D) All of these

• question_answer140) Litmus is obtained from

A) Lichen

B) Algae

C) Fungi

D) Protozoa

• question_answer141) Recognition sequence in $EcoRi$is

A) GAATTC

B) GGCC

C) AAGCTT

D) CTGCAG

• question_answer142) Which is a non-reducing sugar?

A) Glucose

B) Galactose

C) Mannose

D) Sucrose

• question_answer143) Each male genital opening of Pheretima has separate opening of

A) two ducts

B) three ducts

C) five ducts

D) four ducts

• question_answer144) The animal with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belong to the phylum

A) Annelida

B) Mollusca

C) Coelenterata

D) Echinodermata

• question_answer145) Lack of independent assortment of two genes-A and B in fruitfly (Drosophild) is due to

A) repulsion

B) recombination

D) crossing over

• question_answer146) Which one of the following hormone is a modified amino acid?

A) Epinephrine

B) Progesterone.

C) Prostaglandin

D) Estrogen

• question_answer147) Which one of the following amino acid was not found to be synthesised in Millers experiment?

A) Glycine

B) Aspartic acid

C) Glutamic acid

D) Alanine

• question_answer148) Presence of persistant calyx is a feature of family

A) Solanaceae

B) Poaceae

C) Malvaceae

D) Asteraceae

• question_answer149) Renal portal system is

A) present in all vertebrates

B) present in all chordates

C) absent in mammals

D) present in all mammals

• question_answer150) Bidders canal is found in

A) male frog

B) female frog

C) male rabbit

D) female rabbit