# Solved papers for Haryana PMT Haryana PMT Solved Paper-2001

### done Haryana PMT Solved Paper-2001

• question_answer1) The magnetic flux threading a coil change from $24\times {{10}^{-3}}wb$ to $18\times {{10}^{-3}}$ wb in sec. Then the induced e.m.f. is:

A) 0.4

B) 0.6

C) 4.8

D) 2.4

• question_answer2) If the temperature of the sun becomes thrice, the rate of energy received on earth will be increased by a factor of :

A) 81

B) 27

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

D) 243

• question_answer3) What is the order of the forbidden gap in the energy bands of silicon?

A) 1.5 eV

B) 1.1 eV

C) 1.4 eV

D) 1.0 eV

• question_answer4) The refractive index of diamond is 2.0, velocity of light in diamond in cm per second is, approximately :

A) $3\times {{10}^{8}}cm/s$

B) $3\times {{10}^{12}}cm/s$

C) $1.5\times {{10}^{8}}cm/s$

D) $1.5\times {{10}^{10}}cm/s$

• question_answer5) Power factor of purely inductive circuit is :

A) $\frac{R}{\sqrt{{{R}^{2}}+}X_{2L}^{{}}}$

B) $\frac{{{R}^{2}}}{\sqrt{{{R}^{2}}+}{{X}^{2}}}$

C) 1

D) zero

• question_answer6) Maximum penetrating power is that of :

A) $y$-rays

B) $\beta$-rays

C) ultraviolet rays

D) infrared rays

• question_answer7) The masses 1 kg and 4 kg are moving with equal kinetic energy. The ratio of their momenta is :

A) 1:4

B) 2:1

C) $\sqrt{2}:1$

D) 1:2

• question_answer8) The work done by the centripetal force $F$ when the body completes one rotation around the circle of radius R is :

A) zero

B) R F

C) 2RF

D) 27$\pi$RF

• question_answer9) In Youngs double slits experiment, when wavelength used is $6000\overset{\text{o}}{\mathop{\text{A}}}\,$ and the screen is 40 cm from the slits, the fringes are 0.012 cm apart. What is the distance between the slits?

A)  0.2 cm

B)  0.24 cm

C)  2.4 cm

D)  0.024 cm

• question_answer10) Light of frequency $5\times {{10}^{14}}Hz$is travelling in a medium of refractive index 1.5. What is its wavelength? $(C=3\times {{10}^{8}}m/s)$

A) $4000\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $4500\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $6000\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $9000\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer11) A body is walking away from a wall towards an observer at a speed of 1 m/s and blows a whistle whose frequency is 680 Hz. The number of beats heard by the observer per second is (velocity of sound in air = 340 m/s)

A) 4

B) 8

C) 2

D) zero

• question_answer12) An X-ray tube is operated on 30 kV. What is the minimum wavelength emitted$(h=6.6\times {{10}^{-34}})\,\text{Js,}\,\text{c=3}\times \text{1}{{\text{0}}^{8}}\,m/s,$$e=1.6\times {{10}^{-19}}C):$

A) $6.6\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $1.2\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $0.133\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $0.41\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer13) In hydrogen atom, electron makes transition from $n$ = 4 to $n$=1 level, recoil momentum of H-atom will be :

A) $6.8\times {{10}^{-}}^{24}Nm$

B) $3.4\times {{10}^{-}}^{24}Nm$

C) $6.8\times {{10}^{-}}^{27}Nm$

D) $3.4\times {{10}^{-}}^{27}Nm$

• question_answer14) On a glass plate a light wave is incident at an angle of $60{}^\circ$. If the reflected and refracted waves are mutually perpendicular, the refractive index of material is :

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

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

C) $\sqrt{3}$

D) $\frac{\sqrt{3}}{2}$

• question_answer15) The equation of a wave is $y$ = 3 cos $\pi$ (100$t$- x) where $y$ and $x$ are in cm and (in second. The wavelength of this wave is :

A) 100 cm

B) 5 cm

C) 3 cm

D) 2 cm

• question_answer16) A thin circular ring of mass M and radius r is rotating about its axis with a constant angular velocity 0). Two objects each of mass muare placed gently on the opposite ends of a diameter of the ring. The ring now rotates with an angular velocity.

A) $\frac{\omega M}{M+2m}$

B) $\frac{\omega (M+2m)}{m}$

C) $\frac{\omega (M-2m}{m=2m}$

D) $\frac{\omega M}{M=m}$

• question_answer17) A vacuum tube has an amplification factor of 10. If the grid voltage is decreased by 0.4 volt, by how much should the plate potential be raised to maintain the plate current constant ?

A) 3 volt

B) 1 volt

C) 2 volt

D) 4 volt

• question_answer18) What should be the angle of projection so that the horizontal range is equal to the maximum height ?

A) tan$^{-1}3$

B) tan$^{-1}6$

C) tan $^{-1}5$

D) $^{-1}4$

• question_answer19) For a transistor the parameter $\beta$ = 49 the value of the a parameter is :

A) 1

B) 98

C) 0.98

D) 9.8

• question_answer20) For an ideal gas undergoing an adiabatic change, the equation giving the relation between its temperature T and pressure P is (where $y$= ratio of two specific heats ${{C}_{p}}$ and ${{C}_{u}}$ of the gas) :

A) ${{p}^{1-\gamma T\gamma =}}$ constant

B) ${{p}^{\gamma -T\gamma -1=}}$ constant

C) $P{{T}^{y-1=}}$ constant

D) $P{{T}^{\gamma 1=}}$ constant

• question_answer21) At the same temperature the ratio of the root mean square speeds of the molecules of hydrogen and oxygen (Crms(H)/crms (0) is equal to :

A) 4

B) 8

C) 16

D) 32

• question_answer22) The dimension of magnetic flux are :

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

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

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

D) $[ML{{T}^{-2}}{{A}^{-2}}]$

• question_answer23) In a step up transformer, the turn ratio is 1:20. A Laclanche cell (e.m.f. 1.5 V) has been connected across the primary, me voltage across secondary will be :

A) zero

B) 75 V

C) 0.75 V

D) 30 V

• question_answer24) Yellow light is used in a single slit diffraction experiment with slit width 6 mm. If yellow light is replaced by X-rays, then the observed pattern will reveal :

A) no diffraction pattern

B) less number of fringes

C) more number of fringes

D) central maxima is narrower

• question_answer25) 1 a.m.u. in terms of energy is :

A) 93.1 V

B) 931 eV

C) 9.31 MeV

D) 931 MeV

• question_answer26) According to Keplers second law, how the radius vector of a planet relative to sun sweeps out equal areas in equal interval of time The law is a consequence of conservation of:

A) Newtons law of gravitation

B) Angular momentum

C) Law of conservation of energy

D) None of these

• question_answer27) L, R represents inductance and resistance respectively, which of the following has the dimension of frequency?

A) $\sqrt{L/R}$

B) $\sqrt{R/L}$

C) $R/L$

D) $\sqrt{L/R}$

• question_answer28) The radioactive decay of uranium into thorium is given by the equation$_{92}{{U}^{238}}\xrightarrow{{}}_{90}^{{}}T{{h}^{234}}+X,$?

A) A neutron

B) An $\alpha$-particle

C) Electron

D) Proton

• question_answer29) 300 joule of work is done in sliding a 2 kg block up an inclined plane to a height of 10 m. Taking the value of acceleration due r\ to gravity g to be 10 m/s , work done against friction is :

A) zero

B) 300 joule

C) 200 joule

D) 100 joule

• question_answer30) The equivalent resistance between X and Y in circuit given, is :

A) 5$\Omega$

B) 7.5$\Omega$

C) 20$\Omega$

D) 10$\Omega$

• question_answer31) Three capacitors of capacitance 2$\mu$F, 3$\mu$F and 6$\mu$F are connected in series and the combination is charged by means of a 24 volt battery. The potential difference between the plates of the 6$\mu$F capacitor will be :

A) 10V

B) 8V

C) 4 V

D) 6 V

• question_answer32) Five capacitors are connected as shown in the figure. The equivalent capacitance between A and B is :

A) 4$\mu$F

B) 3$\mu$F

C) 2$\mu$F

D) 1$\mu$F

• question_answer33) The ratio of peak value and rms value of an alternating current is :

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

B) $\sqrt{2}$

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

D) 1

• question_answer34) Two soap bubbles of radii r1 and r2 equal to 4 cm and 5 cm are touching each other over a common surface S1 and S2 shown in figure. Its radius will be :

A) 4.5 cm

B) 25 cm

C) 20 cm

D) 40 cm

• question_answer35) The electric potential at a point distant r due to an electric dipole is proportional to:

A) ${{r}^{2}}$

B) r

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

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

• question_answer36) A body falling from a high minar travels 40 m in the last 2 seconds of its fall to ground. Height of minar in metre is :

A) 50

B) 80

C) 45

D) 60

• question_answer37) A bulb has specifications of 1 kW and 250 volt, the resistance of bulb is :

A) 625 $\Omega$

B) 0.25 $\Omega$

C) 6.25 $\Omega$

D) 62.5 $\Omega$

• question_answer38) The decay constant of a radioactive element is $\lambda$ The half life and mean life of a sample are respectively, given by :

A) $\frac{\lambda }{{{\log }_{e}}2}and\frac{1}{\lambda }$

B) $\lambda ({{\log }_{e}}2)and\frac{1}{\lambda }$

C) $\frac{{{\log }_{e}}2}{\lambda }and\frac{1}{\lambda }$

D) $\frac{1}{\lambda }and{{\log }_{e}}2/\lambda$

• question_answer39) Energy in the sun is produced by :

B) chemical process

C) fission process

D) fusion process

• question_answer40) The slope of a graph between threshold frequency and stopping potential is :

A) $\frac{h}{{{v}_{0}}}$

B) $h{{v}_{0}}$

C) ${{v}_{0}}$

D) $h$

• question_answer41) One feels hotter at the top of the flame than the sides of flame because of :

B) conduction

C) convection

D) both (a) and (b)

• question_answer42) Relation between critical angles of water and glass is :

A) ${{C}_{\omega }}<{{C}_{g}}=0$

B) ${{C}_{\omega }}={{C}_{g}}$

C) ${{C}_{\omega }}<{{C}_{g}}$

D) ${{C}_{\omega }}>{{C}_{g}}$

• question_answer43) A man is standing on a spring platform. The reading of spring balance is 60 kg weight. If the man jumps outside from the platform, the reading of spring balance :

A) becomes zero

B) increases

C) remains same

D) first (b) then (c)

• question_answer44) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) particle moving on a circular path with constant speed: (R) It possesses radial velocity

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer45) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) We prefer water as the coolant in the radiators of engines in motor vehicles (R) Due to high thermal capacity, the water absorbs large amount of heat and the cooling is faster

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer46) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) Cloudy nights are usually warmer (R) Clouds have low thermal conductivity

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer47) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) Metals are good conductors of heat (R) Their surfaces are good reflector of heat.

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer48) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) Escape velocity on earth depends upon the mass of a projected body. (R) Escape velocity on the earth $_{ues}=\sqrt{\frac{gm}{R}}$where m is the mass of the body?

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer49) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) Rubber is a more elastic than glass (R) The rubber has higher modulus of elasticity than glass

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer50) Direction: In the question Assertion (A) and Reason (R) are given then the correct answers will be as: (A) Refractive index of prism depends only on the kind of glass of which it is made of and the colour of light (R) The refractive index of prism depends upon he refracting angle of the prism and the angle of minimum deviation:

A) If both (A) and (R) are true and (R) is the correct explanation of the (A)

B) If both (A) and (R) are true but (R) is not the explanation of (A)

C) If (A) is true but (R) is false

D) If (A) is false but (R) is true

E) Both (A) and (R) are false

• question_answer51) Consider the reaction, $CaC{{O}_{3}}(s)CaO(s)+C{{O}_{2}}(g)$in closed container at equilibrium. What would be the, effect of adding $CaC{{O}_{3}}$ on the equilibrium concentration of $C{{O}_{2}}$?

A) Increases

B) Decreases

C) Remains constant

D) None of these

• question_answer52) Which is not a colloid?

A) Egg

B) Milk

C) Ruby glass

D) Chlorophyll

• question_answer53) Electric refining is used for refining of :

A) $Cu$

B) $Fe$

C) $Pb$

D) $Al$

• question_answer54) Ionisation energy of hydrogen is:

A) much higher than that of chlorine

B) slightly higher than that of chlorine

C) smaller than that of chlorine

D) equal to that of chlorine

• question_answer55) The half-life of 4 isotopes are:

 (I) $6.7year$ (II) $8\times {{10}^{3}}year$ (III) $5760\text{ }year$ (IV) $2.35\times {{10}^{5}}year$
The most stable isotope is:

A) $IV$

B) $III$

C) $II$

D) $I$

• question_answer56) The composition of mica is:

A) $NaK.Si{{O}_{4}}.10{{H}_{2}}O$

B) ${{K}_{2}}HAl{{(Si{{O}_{4}})}_{3}}$

C) ${{K}_{2}}O.3A{{l}_{2}}{{O}_{3}}.6Si{{O}_{2}}.2{{H}_{2}}O$

D) $NaAlSi{{O}_{4}}.3{{H}_{2}}O$

• question_answer57) Which one is a good solvent for ionic and polar covalent compounds?

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

B) $C{{H}_{3}}OH$

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

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

• question_answer58) The coupling between base units of DNA is through:

A) van der Waals forces

B) hydrogen bonding

C) electrostatic bonding

D) covalent bonding

• question_answer59) The energy of an electron in the first Bohr orbit of H-atom is$-13.6eV$. The possible energy value(s) of the excited state(s) for electron in Bohr orbits of hydrogen is(are):

A) $-6.8eV$

B) $-4.2eV$

C) $-3.4eV$

D) $+6.8eV$

• question_answer60) In a compound $C=40%$and $H=6.66%,$ what is the empirical formula of the compound?

A)

B) ${{C}_{4}}H{{O}_{4}}$

C) CHO

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

• question_answer61) The best method to separate the mixture of ortho and para nitrophenol $(1:1)$is:

A) vaporisation

B) colour spectrum

C) distillation

D) crystallization

• question_answer62) I.U.P.A.C. name of ${{(C{{H}_{3}})}_{3}}-C-CH=C{{H}_{2}}$is:

A) 2,2-dimethyl-3-butene

B) 3,3-dimethyl-l-butene

C) 3,3,3-trimethyl-l-propene

D) 1,1,1-trimethyl-2-butene

• question_answer63) Which of the following compound could be optically active?

A) 2,3-diinethyl pentane

B) 2-methyl pentane

C) Isopropyl bromide

D) Isoethyl alcohol

• question_answer64) The number of $s{{p}^{3}}$-hybrid carbons in 2-buttyne:

A) $1$

B) $2$

C) $3$

D) $4$

• question_answer65) Excess of $NaOH$ solution reacts with zinc to form:

A) disodium zinc

B) sodium zincate

C) zinc oxide

D) zinc hydroxide

• question_answer66) The most acidic among the following is:

A) ${{B}_{2}}{{O}_{3}}$

B) $A{{s}_{2}}{{O}_{3}}$

C) $S{{b}_{2}}{{O}_{3}}$

D) ${{P}_{2}}{{O}_{3}}$

• question_answer67) Gibbs free energy G, enthalpy, H and entropy are related as:

A) $G=H-TS$

B) $G=H+TS$

C) $H=G-TS$

D) $S=H-G$

• question_answer68) The $H-H$ bond energy is $430\text{ }kJ\text{ }mol{{e}^{-1}}$ and $Cl-Cl$ bond energy is $240\text{ }kJ\text{ }mol{{e}^{-1}}$, $\Delta H$ for $HCl$ is $-90kJ$. The $H-Cl$ bond energy is about:

A) $180kJ\text{ }mol{{e}^{-1}}$

B) $360kJ\text{ }mol{{e}^{-1}}$

C) $213kJ\text{ }mol{{e}^{-1}}$

D) $425kJ\text{ }mol{{e}^{-1}}$

• question_answer69) What is the amount of urea dissolved perlitre, if aqueous solution is isotonic with 10% cane sugar solution? (Mol. wt. of urea =60)

A) $200g/lit$

B) $19.2g/lit$

C) $17.54g/lit$

D) $16.7g/lit$

• question_answer70) The reduction electrode potential, E of $0.1M$solution of ${{M}^{+}}$ ions $({{E}_{RP}}=-2.36V)$ is:

A) $-4.82V$

B) $-4.82V$

C) $+2.41V$

D) none of these

• question_answer71) pH of solution whose $[{{H}^{+}}]$ is 1 mole per litre is:

A) $1.5$

B) $1.0$

C) $0.1$

D) $0$

• question_answer72) Identify the element which can have highest oxidation number.

A) $Cl$

B) $0$

C) $C$

D) $N$

• question_answer73) Oxidation number of $Fe$ in $F{{e}_{3}}{{O}_{4}}$are:

A) $+1$and $+2$

B) $+1$and $+3$

C) $+2$and $+3$

D) $+2$ and $+4$

• question_answer74) Number of unpaired electrons in the electronic configuration is:

A) $6$

B) $4$

C) $3$

D) $2$

• question_answer75) Which of-the following sets of quantum number is wrong?

A) $n=3,l=2,m=1,s=+\frac{1}{2}$

B) $n=3,l=2,m=1,s=+\frac{1}{2}$

C) $n=2,l=2,m=0,s=+\frac{1}{2}$

D) $n=2,l=1,m=0,s=+\frac{1}{2}$

• question_answer76) From the ground state electronic configuration of the elements given below, pick up the one with highest value of IInd iomisation energy :

A) $1{{s}^{2}},2{{s}^{2}}2{{p}^{5}}$

B) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}}$

C) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{1}}$

D) $1{{s}^{2}},2{{s}^{2}}2{{p}^{6}},3{{s}^{2}}$

• question_answer77) Which one of the following gases contains least number of molecules?

A) ${{H}_{2}}\text{O}\,\text{(4g)}$

B) Marsh gas $\text{(2g)}$

C) $\text{PC}{{\text{l}}_{5}}\text{(4g)}$

D) Phosgene $\text{(2g)}$

• question_answer78) In crystal structure, of rock salt $(NaCl)$, the arrangement of $C{{l}^{-}}$ ion is:

A) fee

B) bcc

C) both (a) and (b)

D) none of these

• question_answer79) Chlorophyll is the complex of:

A) $C{{o}^{2+}}$

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

C) $F{{e}^{2+}}$

D) $M{{g}^{2+}}$

• question_answer80) Purest form of iron is:

A) steel

B) wrought iron

C) grey cast iron

D) white cast iron

• question_answer81) A gas decolourises bromine in $CC{{l}_{4}}$ and forms a precipitate with ammonical silver nitrate. The gas is:

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

B) ${{C}_{2}}{{H}_{6}}$

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

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

• question_answer82) The reaction,${{C}_{6}}{{H}_{5}}OH\xrightarrow[2{{H}^{+}}]{CHC{{l}_{3}}+NaOH}Salicyldehyde$is known as:

A) Reimer Tiemann reaction

B) Gattermann aldehyde synthesis

C) Duffs reaction

D) Perkin reaction

• question_answer83) $HN{{O}_{2}}$ forms an alcohol on reaction with:

A) ${{(C{{H}_{3}})}_{2}}NH$

B) $C{{H}_{3}}N{{H}_{2}}$

C) ${{C}_{6}}{{H}_{5}}NHC{{H}_{3}}$

D) ${{C}_{6}}{{H}_{5}}N{{H}_{2}}$

• question_answer84) Hydrolysis of esters in alkaline medium is called:

A) esterification

B) alkalization

C) saponification

D) hydration

• question_answer85) The solubility of $AgCl({{K}_{sp}}=1.2\times {{10}^{-10}})$in a$0.1M\text{ }NaCl$solution is:

A) $1.2\times {{10}^{-10}}M$

B) $1.2\times {{10}^{-9}}M$

C) $1.2\times {{10}^{-6}}M$

D) $0.1M$

• question_answer86) The pH of $0.1M\,N{{H}_{4}}Cl$is:

A) $>7$

B) $<7$

C) $=7$

D) highly basic

• question_answer87) The reaction,${{C}_{6}}{{H}_{5}}CHO+C{{H}_{3}}CHO\xrightarrow{{}}$${{C}_{6}}{{H}_{5}}CH=CHCHO$is called:

A) Benzoin condensation .

B) Claisen condensation

C) Cannizzaros reaction

D) Perkin reaction

• question_answer88) Which of the following amine will not give carbylamine reaction?

A) Methyl amine

B) Ethyl amine

C) Dimethyl amine

D) Phenyl amine

• question_answer89) Teflon is a polymer of which of the following?

A) Tetrafluoroethene

B) Tetrafluoromethane

C) Difluoroethane

D) Monofluoroethane

• question_answer90) Most electropositive halogen is:

A) $Cl$

B) $Br$

C) $I$

D) $F$

A) tetrabasic

B) tribasic

C) dibasic

D) monobasic

• question_answer92) Plaster of Paris is hardened by:

A) giving out water

B) uniting with water

C) changing in to $CaC{{O}_{3}}$

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

• question_answer93) Increasing order of acidic character of the following is:

A) ${{H}_{3}}P{{O}_{4}}<{{H}_{2}}C{{O}_{3}}<{{H}_{2}}S{{O}_{4}}$

B) ${{H}_{2}}S{{O}_{4}}<{{H}_{2}}C{{O}_{3}}<{{H}_{3}}P{{O}_{4}}$

C) ${{H}_{3}}P{{O}_{4}}\text{ }{{H}_{2}}S{{O}_{4}}<{{H}_{2}}C{{O}_{3}}$

D) ${{H}_{2}}C{{O}_{3}}<{{H}_{3}}P{{O}_{4}}<{{H}_{2}}S{{O}_{4}}$

• question_answer94) A catalyst increases the rate of reaction because it:

A) increases the temperature coefficient

B) increases the activation energy

C) decreases the energy barrier for reaction

D) decreases the collision diameter

• question_answer95) The rate constant is given by the equation which factor should register a decrease for the reaction to proceed more rapidly:

A) $E$

B) $P$

C) $T$

D) $Z$

• question_answer96) A radioactive element has a half-life of one day. After three days the amount of the element left will be:

A) $\frac{1}{16}$of the original

B) $\frac{1}{8}$ of the original

C) $\frac{1}{4}$ of the original

D) $\frac{1}{2}$ of the original

• question_answer97) Which of the following has more unpaired electrons?

A) $C{{u}^{+}}$

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

C) $Zn$

D) $Ne$

• question_answer98) Ionisation potential in a period is maximum in the case of:

A) representative element

B) halogens

C) alkali metals

D) inert gas

• question_answer99) If the Plancks constant, $h=6.6\times {{10}^{-34}}Js,$ the de-Broglies wavelength of a particle having moment of $3.3\times {{10}^{-24}}kg\text{ }m{{s}^{-1}}$ will be:

A) $500\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $2\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $0.5\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $0.02\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer100) Methanal and phenol react in presence of base to give:

A) bakelite

B) polyethylene

C) dacron

D) nylon-66

• question_answer101) The water vascular system performs all but not one function which is that :

A) excretion

B) respiration

C) food capturing

D) hormone secretion

• question_answer102) Which is not a fish?

A) Scoliodon

B) Electric ray

C) Whale

D) Sea horse

• question_answer103) Which of the following secrets a horny exoskeleton ?

A) Hydrn

B) Sea anemone

C) Obelia

D) Jelly fish

• question_answer104) Pearls is secreted by :

A) edge of mantle

B) inner lining of mantle

C) outer lining of mantle

D) none of these

• question_answer105) One of the following is not a .nematode parasite?

A) Trichinella

B) Ascaris

C) Dracunculus

D) Schistosoma

• question_answer106) Hydra does not perform locomotion by :

A) looping

B) somer saulting

C) jet propulsion

D) walking

• question_answer107) Which one is not the larval stage of Fasciola ?

A) Cercaria

B) Miracidium

C) Cysticercus

D) Redia

• question_answer108) The primary function of flame cells is :

A) excretion

B) osmoregulation

C) secretion of toxins

D) all of these

• question_answer109) Enzyme carbonic an hydrase is present in :

A) blood plasma

B) WBC

C) RBC

D) lymph

• question_answer110) Secretion of digestive juice in stomach is form :

A) Brunners gland

B) gastric gland

C) foveola

D) sub mucosal gland

• question_answer111) Which one is not involved in the immune system?

A) B-cells

B) T-cells

C) Macrophage

D) Granulocyte

• question_answer112) In man yellow colour of faeces is due to :

A) pigments produced by the breakdown of hemoglobin

B) undigested fat which is yellow coloured

C) bile juice

D) pancreatic juice

• question_answer113) Peyers patches are :

A) group of lymph nodules

B) group of arteries

C) group of ganglia

D) none of these

• question_answer114) Which of the following is not a function of erythrocyte ?

A) Oxygen transport

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

C) Carriers of antigen

D) Phagocytosis

• question_answer115) Spleen participates in the :

A) production of antibodies

B) filtration of blood

C) store house of worn out RBC

D) all of these

• question_answer116) Colour of oxyhaemoglobin molecule is :

A) bright red

B) bright blue

C) whitish blue

D) orange white

• question_answer117) In origin the RBC are :

A) cytoplasmic

B) endothelial

C) mesothelial

D) none of these

• question_answer118) As compared with blood, urine in mammals is :

A) hypotonic

B) hypertonic

C) isotonic

D) difference between a and b

• question_answer119) The development of unfertilized eggs produced by larvae is called :

A) paedogenesis

B) parthenogenesis

C) neoteny

D) polyembryony

• question_answer120) Relaxin hormone in mammals is secreted by:

A) placenta

B) follicle

C) ovary

D) testis

• question_answer121) Motile sperms are absent in :

A) Mucor

B) Cycas

C) Tomato

D) Funaria

• question_answer122) Lomasomes are present in :

A) protozoan

B) fungi

C) bacteria

D) virus

• question_answer123) Tungro disease affects :

A) Wheat

B) Barley

C) Rice

D) Sorghum

• question_answer124) Mycorrhizae is a good example of :

A) symbiosis

B) commensalism

C) proto cooperation

D) competition

• question_answer125) Imperfect fungi are known as :

A) Ascomycetes

B) Deutcromycetes

C) Basidiomycetes

D) Phycomycetes

• question_answer126) Which acid is not produced by various species of fungi ?

A) Gluconic acid

B) Acetic acid

C) Sulfuric acid

D) Succinic acid

A) pantothenic acid

B) thymine

C) riboflavin

D) folic acid

• question_answer128) Name of the substance often found in bacteria:

A) PHB

B) BPH

C) HBP

D) None of these

• question_answer129) Which of the following is not photoautotroph ?

A) Purple sulfur bacteria

B) Purple none sulfur bacteria

C) Green sulfur bacteria

D) Cyanobacteria

• question_answer130) Bacterial chlorophyll absorbs mainly :

A) infra-red light

B) visible light

C) UV rays

D) X-rays

• question_answer131) Cell wall of red algae contains :

A) cellulose

B) cellulose + alginic acid

C) cellulose + pectin

D) no cell wall

• question_answer132) Process in which the phosphate group of a compound is removed and directly added to ADP is :

A) substrate level phosphorylation

B) photophosphorylation

C) oxidative phosphorylation

D) none of these

• question_answer133) AIDS is confirmed by :

A) ELISA

B) Western blot

C) Northern blot

D) Southern blot

• question_answer134) The vitamin responsible for antisterile activity is:

A) Vitamin B

B) Vitamin E

C) Vitamin K

D) Vitamin H

• question_answer135) EEC is done to detect :

A) heart disorders

B) brain disorders

C) liver disorders

D) none of the above

• question_answer136) The image of an object produced on the retina is :

A) real and inverted

B) virtual and enlarged

C) virtual and inverted

D) real and enlarged

A) electrical impulses

B) chemical impulses

C) magnetic impulses

D) electromagnetic impulses

• question_answer138) Turmeric a commonly used colorant and antiseptic is taken from which part of the plant?

A) Stem

B) Root

C) Flower

D) Fruit

• question_answer139) Pheromones help in :

A) flying

B) courtship and mating

C) eating

D) walking

• question_answer140) The organ which is affected by diphtheria is :

A) liver

B) lungs

C) throat

D) skin

• question_answer141) Which of the following is a banned pesticide ?

A) DDT

B) CAN

C) EDB

D) DNB

• question_answer142) Leaf lamina is modified into two toothed jaws in:

A) Nepenthes

B) Dionea

C) Drosera

D) Utricularia

• question_answer143) Name the hydrophyte which is not free floating?

A) Wolffia

B) Lemna

C) Utricularia

D) Eichhornia

• question_answer144) Root cap is not generally present in :

A) mesophytes

B) halophytes

C) hydrophytes

D) xerophytes

• question_answer145) Which is not a flightless bird ?

A) Rhea

B) Dromeaus

C) Apteryx

D) Columba

• question_answer146) When the sepals or petals meet by their edges without overlaping the aestivation is :

A) Imbricate

B) valvate

C) twisted

D) axillary

• question_answer147) Boat shaped anterior petal in garden pea is called :

A) wing

B) alae

C) keel

D) ship

• question_answer148) The process of formation of glucose from non-carbohydrate sources is called :

A) glycogenesis

B) glycogenolysis

C) glyconeogenesis

D) glycolysis

• question_answer149) Northern blotting is used for :

A) DNA transfer

B) RNA transfer

C) protein transfer

D) all of these

• question_answer150) Kogi and Haggen Smit (1931) isolated which plant growth regulator from human urine :

A) ethylene

B) auxins

C) gibberellins

D) ABA

• question_answer151) Learning is related to :

A) hypothalamus

B) cerebellum

C) cerebrum

D) pineal body

• question_answer152) Heterocysts are found in :

A) Aspergillus

B) Nostoc

C) Cystupus

D) Ulothrix

• question_answer153) F plasmid is :

A) a slime mould

B) virus

C) extra nucleoid DNA

D) yeast

• question_answer154) The offsprings of better individuals are expected to make up a large portion of the next generation this involves which process :

A) mutation

B) genetic drift

C) genetic pool

D) natural selection

• question_answer155) The source of energy in muscle contraction is :

B) GTP

C) ATP

D) creatine phosphate

• question_answer156) The principal cereal crop of India is :

A) Wheat

B) Rice

C) Cotton

D) Maize

• question_answer157) Synthetic vaccines are called :

A) first generation

B) second generation

C) third generation

D) none of these

• question_answer158) Dolly-a sheep was cloned in :

A) USA

B) UK

C) UAE

• question_answer159) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Insects usually develop resistance to insecticides. Reason: Natural selection is a phenomenon that is generally exhibited by organisms.

A) If both (A) and (R) are true and (R) is the correct explanation of (A).

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer160) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Bladder worm is a state in the life history of a Tapeworm. Reason: Tapeworms are flattened organisms:

A) If both (A) and (R) are true and (R) is the correct explanation of (A).

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer161) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Birds can make sudden and swift changes in their direction during flight. Reason: Because of their sharp eye sight:

A) If both (A) and (R) are true and (R) is the correct explanation of (A).

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer162) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Trygon, a cartilagenous fish, is a good source of commercial fish food. Reason: Cartilagenous fish can be eaten without any left over.

A) If both (A) and (R) are true and (R) is the correct explanation of (A).

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer163) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: The disposition of the internal organs of the Snail show asymmetry. Reason: Because of torsion of visceral components.

A) If both (A) and (R) are true and (R) is the correct explanation of (A).

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer164) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Evolution of sex has been necessary for the sake of continuance of species. Reason: Organisms can also continue through asexual means.

A) If both (A) and (R) are true and (R) is the correct explanation of (A).

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer165) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Meiosis is a reductional division where gametes are formed. Reason: Meiosis is also a means of genetic recombination.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer166) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : The action of a competitive enzyme can be reversed by increasing the substrate concentration. Reason : Competitive enzymes inhibitors compete with the substrate reacting reversibly with the enzyme.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer167) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: The gene may undergo a sudden change in expression due to change in composition called mutation. Reason: Some genes mutate more than once and have more than two alleles.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer168) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Natural selection produces the variations favourable to a particular environment. Reason : Accumulation of these variation could not lead to origin of new species.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer169) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Biological clocks of living organisms oscillate continuously. Reason : Biological clocks of living organisms are independent of changes in environment:

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer170) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : In a monohybrid cross we study two characters. Reason : Where alleles exhibit dominant recessive relationship.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer171) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Cyanide is a metabolic poison. Reason: As it inhibits the enzyme cytochrome oxidase and blocks tissue respiration.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer172) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Grey matter surrounds the white matter in the brain. Reason: White matter surrounds the grey matter in the spinal cord.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer173) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Microsome is the collective name for cytoplasmic cell organelle obtained after centrifugation of the cell. Reason : These are present in all normal cells.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer174) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Haemocoelomic fluid of Leech has a red colour. Reason : The coelomic fluid of Leech contains floating red blood corpuscles.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer175) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: The birds have large, light spongy bones with air sacs. Reason: These adaptation help them during flight.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer176) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Ingested alcohol suppresses ADH. Reason: Suppression of ADH causes increased urine flow.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer177) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : The phenomenon of spontaneons speciation is incommon in animals. Reason: Polyploidy is rare in animals.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer178) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: ADH is also called vasopressin and is secreted by anterior lobe of pituitary. Reason: As it plays an important role in osmatic and ionic balance in vertebrate animals.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer179) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Plasmolysis occurs when plant cells are placed in concentrated salt solution. Reason : Concentrated salt solution is a hypotonic solution.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer180) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Mn is not needed for light reaction of photosynthesis. Reason: It is constituent of chlorophyll.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer181) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Flower is a modified shoot. Reason : All the floral parts are borne on thalamus.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer182) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion: Axillary buds, in actively growing herbaceous plants, generally remain dormant. Reason : This is due to apical dominance which is under the influence of auxins.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer183) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Connective tissue contains a large amount of non-living intercellular or extracellular matrix. Reason : Intercellular substance is usually made up of protein fibres.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer184) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Alimentary canal of Prawn is divisible into fore gut, mid gut and hind gut. Reason : It does not contain any digestive gland.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer185) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Vitamin B; is chemically called thiamine. Reason : It is also called vitamin G.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer186) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Liver is an endocrine gland. Reason : It secrets many enzymes in bile juice.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer187) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : Compound eyes are found in many Arthropods. Reason : Each compound eye consists of a large number of visual structures called ommatidia.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer188) Direction: In the given questions a statement of Assertion (A) is given and a corresponding statement of Reason (R) is given just below it of the statement, mark the correct answer as: Assertion : The copulatory orangs of Sharks and Rays are called claspers. Reason : Uterus is also called womb.

A) If both (A) and (R) are true and (R) is the correct explanation of (A)

B) If both (A) and (E) are true but (E) is not correct explanation of (A)

C) If (A) is true but (R) is false

D) If both (A) and (R) are false

E) If (A) is false but (R) is true

• question_answer189) Model for DNA structure was proposed by:

B) M.C. Chung

C) Purkinje

D) Watson and Crick

• question_answer190) Cell wall is outer covering of plant cell made up of cellulose it is :

A) semipermeable

B) permeable

C) non permeable

D) all of these

• question_answer191) Protein is the body building material of animals it is the polymer of :

A) glucose

B) nucleotides

C) amino acids

D) fatty acids

• question_answer192) A molecule of sedoheptulose has carbon atoms numbering :

A) 3

B) 4

C) 5

D) 7

• question_answer193) Which of the following disease is the result of thiamine deficiency ?

A) Marasmus

B) Beri-beri

C) Rickets

D) Kwashiorkor

• question_answer194) Chemically wax is :

A) a protein

B) a lipid

C) a carbohydrate

D) an amino acid

• question_answer195) The chemical formula of chlorophyll-b is:

A) ${{C}_{55}}{{H}_{72}}{{O}_{5}}{{N}_{5}}Mg$

B) ${{C}_{55}}{{H}_{72}}{{O}_{5}}{{N}_{4}}Mg$

C) ${{C}_{55}}{{H}_{70}}{{O}_{6}}{{N}_{4}}Mg$

D) ${{C}_{55}}{{H}_{72}}{{O}_{5}}{{N}_{5}}Mg$

• question_answer196) The reaction of glycolysis occurs in :

A) mitochondria

B) ribosome

C) cytoplasm

D) golgi complex

• question_answer197) In a human being the number of cranial nerves are :

A) 10 pairs

B) 12 pairs

C) 6 pairs

D) 20 pairs

• question_answer198) The plants respond to photo-periods due to the presence of :

A) phytochromes

B) stomata

C) enzymes

D) phytohormones

• question_answer199) The pioneers in the field of organic evolution are :

A) Darwin, Hugo de Vries, Lamarck, Huxley

B) Karl Landsteiner, Hugo de Vries, Malthus, Darwin

C) Lamarck, Karl Landsteiner, Malthus, de Vries

D) Darwin, Lamarck, Karl Landsteiner, de Vries

• question_answer200) The cell wall of bacteria is composed of :

A) murein

B) chitin

C) cellulose

D) suberin

• question_answer201) The phenomenon, in which an allele of one gene suppresses the activity of an allele of another gene, is known as :

A) suppression

B) inactivation

C) epistasis

D) dominance

• question_answer202) What is common among amylase, rennin .and trypsin ?

A) These all are proteins

B) These all are proteolytic enzymes

C) These are produced in stomach

D) These are all hormone

• question_answer203) The vagus nerve is the cranial nerve numbering :

A) 10th

B) 9th

C) 7th

D) 5th

A) pronephros

B) mesonephros

C) metanephros

D) opisthonephros

• question_answer205) Which of the following is free living aerobic non-photosynthetic nitrogen fixing bacterium ?

A) Rhizobium

B) Azotobacter

C) Nostoc

D) Azospirillium

• question_answer206) If a person shows production of in terferons in his body the chances are that he has got an infection of :

A) typhoid

B) measles

C) tetanus

D) malaria

• question_answer207) Centromere is a part of :

A) ribosomes

B) mitochondria

C) chromosome

D) endoplasmic reticulum

• question_answer208) $NADP{{H}_{2}}$ is generated through :

A) photosystem I

B) photosystem II

C) anaerobic respiration

D) glycolysis

• question_answer209) If an angiospcrmic male plant is diploid and female plant tetraploid the ploidy level of endosperm will be :

A) haploid

B) triploid

C) tetraploid

D) pentaploid

• question_answer210) Heterospory and seed habit are often exhibited by a plant possessing :

A) bract

B) spathe

C) petiole

D) ligule

• question_answer211) Bryophytes can be seperated from algae because they :

A) are thalloid forms

B) have no conducting tissue

C) possess archegonia

D) contain chloroplast

• question_answer212) Brown algae is characterised by the presence of:

A) phycocyanin

B) phycoerythrin

C) fucoxanthin

D) haematochrome

A) cow dung manure and farmyard waste

B) quick growing crop ploughed under soil

C) Anabaena and Azolla

D) none of these

• question_answer214) The end product of fermentation are :

A) ${{O}_{2}}$ and ${{C}_{2}}{{H}_{5}}OH$

B) $C{{O}_{2}}$ and ${{C}_{2}}{{H}_{5}}OH$

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

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

• question_answer215) The Nissls granules of nerves cell are made up of :

A) ribosome

B) protein

C) DNA

D) RNA

• question_answer216) In ureotelic animals urea is formed by :

A) Ornithine cycle

B) Coris cycle

C) Krebs cycle

D) EMP pathway

• question_answer217) Stratum germinativam is an example of which kind of epithelium ?

A) Cuboidal

B) Ciliated

C) Columnar

D) Squamous

• question_answer218) Which one of the following vitamins can be synthesized by bacteria inside the gut ?

A) B

B) C

C) D

D) K

• question_answer219) Hormones thyroxine adrenaline and the pigment melanin are iormed from :.

A) tryptophan

B) glycine

C) tyrosine

D) proline

• question_answer220) Which one of the following statements is correct regarding evolution of mankind ?

A) Neanderthal man and cro-magnon man were living at the same time

B) Australopithecus was living in Australia

C) Homo erectus is preceded by Homo habilis

D) None of these