Solved papers for Haryana PMT Haryana PMT Solved Paper-2004

done Haryana PMT Solved Paper-2004

  • question_answer1) The velocity of bullet is reduced from 200 m/s to 100 m/s while travelling through a wooden block of thickness of 10 cm. The retardation assuming to be uniform, will be :

    A) \[15\times {{10}^{4}}m/{{s}^{2}}\]

    B) \[13.5\times {{10}^{4}}m/{{s}^{2}}\]

    C) \[12\times {{10}^{4}}m/{{s}^{2}}\]

    D) none of these

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  • question_answer2) A stone tied to one end of spring 80 cm long is whirled in a horizontal circle with a constant speed. If stone makes 25 revolutions in 14 sec, the magnitude of acceleration of stone is :

    A) \[850\text{ }cm/{{s}^{2}}\]

    B) \[996\text{ }cm/se{{c}^{2}}\]

    C) \[720\text{ }cm/{{s}^{2}}\]

    D) \[650\text{ }cm/se{{c}^{2}}\]

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  • question_answer3) A concave mirror of focal length 15 cm forms an image having twice the linear dimension of the object. The position of the object when die image is virtual will be :

    A) 45 cm

    B) 30 cm

    C) 7.5 cm

    D) 22.5 cm

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  • question_answer4) The thermodynamic co-ordinates of a jar filled with gas A are P, V and T and another jar B filled with another gas are 2P, V/4 and 2T, where the symbols have their usual meaning. The ratio of the number of molecules of jar A to those of jar B is :

    A) 4 : 1

    B) 2 : 1

    C) 1:2

    D) 1 : 1

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  • question_answer5) If the pressure of a gas contained in a vessel is increased by 0.4% when heated through 1?C, the initial temperature had been :

    A) 2500 K

    B) 250 K

    C) \[250{}^\circ C\]

    D) \[25{}^\circ C\]

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  • question_answer6) 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

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  • question_answer7) For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increase to :

    A) four times

    B) thrice

    C) once

    D) twice

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  • question_answer8) When the kinetic energy of a body executing S.H.M. is 1/3 of the potential energy. The displacement of the body is \[x\] percent of the amplitude, where x is :

    A) 33

    B) 87

    C) 67

    D) 50

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  • question_answer9) In the case of horse pulling a cart, the force that causes the horse to move forward is the force that :

    A) the horse exerts on the ground

    B) the horse exerts on the cart

    C) the ground exerts on the horse

    D) the cart exerts on the horse

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  • question_answer10) If retardation produced by air resistance of projectile is one-tenth of acceleration due to gravity, the time to reach maximum height :

    A) decreases by 11 percent

    B) increases by 11 percent

    C) decreases by 90 percent

    D) increases by 90 percent

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  • question_answer11) \[y\] component of velocity is 20 and \[x\] component of velocity is 10. The direction of motion of the body with the horizontal at this instant is :

    A) \[ta{{n}^{-1}}(2)\]

    B) \[ta{{n}^{-1}}(1/2)\]

    C) 45?

    D) 0?

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  • question_answer12) The dimension of light year is :

    A) \[[{{L}^{-1}}]\]

    B) \[[{{T}^{-1}}]\]

    C) [L]

    D) [T]

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  • question_answer13) In a good conductor of electricity, the type of bonding that exists is :

    A) ionic

    B) van der waal

    C) covalent

    D) metallic

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  • question_answer14) Two identical straight wires are stretched so as to produce 6 beats per second when vibrating simultaneously. On changing the tension slightly in one of them, the beat frequency still remains unchanged. Denoting by \[{{T}_{1}}\] and \[{{T}_{2}}\] the higher and the lower initial tensions in the strings, it could be said that while making the above changes in tension :

    A) \[{{T}_{1}}\]was decreased

    B) \[{{T}_{1}}\]was increased

    C) \[{{T}_{2}}\]was increased

    D) \[{{T}_{2}}\]was decreased

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  • question_answer15) When beats are produced by two progressive waves of the same amplitude and of nearly the same frequency, the ratio of maximum loudness to the loudness of one of the waves will be \[n\] Where \[n\] is :

    A) 3

    B) 1

    C) 4

    D) 2

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  • question_answer16) A body is suspended from a smooth horizontal nail by a string of length 0.25 meter. What minimum horizontal velocity should be given to it in the lowest position so that it may move in a complete vertical circle with the nail at the centre?

    A) \[\sqrt{12.25}m{{s}^{-1}}\]

    B) \[4.9\,m{{s}^{-1}}\]

    C) \[7\sqrt{2}\,m{{s}^{-1}}\]

    D) \[\sqrt{9.8}\,m{{s}^{-1}}\]

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  • question_answer17) Two rain drops falling through air have radii in the ratio 1: 2. They will have terminal velocity in the ratio :

    A) 4 : 1

    B) 1 : 4

    C) 2:1

    D) 1 : 2

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  • question_answer18) A body is acted on by force towards a point. The magnitude of the force is inversely proportional to the square of the distance. The path of body will be :

    A) ellipse

    B) hyperbola

    C) circle

    D) parabola

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  • question_answer19) An electric immersion heater of 1.08 kW is immersed in water. After the water has reached a temperature of 100?C, how much time will be required to produce 100 g of steam?

    A) 210 s

    B) 105 s

    C) 420 s

    D) 50 s

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  • question_answer20) The speed of sound through oxygen at TK is \[u\] \[m{{s}^{-1}}.\] As the temperature becomes 2T and oxygen gas dissociates into atomic oxygen, the speed of sound :

    A) remains the same

    B) becomes \[2u\]

    C) becomes \[\sqrt{2u}\]

    D) none of these

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  • question_answer21) Illumination of the sun at noon is maximum because :

    A) scattering is reduced at noon

    B) refraction of light is minimum at noon

    C) rays are incident almost normally

    D) the sun is nearer to earth at noon

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  • question_answer22) Two spheres of radii in the ratio 1:2 and densities in the ratio 2:1 and of same specific heat, are heated to same temperature and left in the same surrounding. Their rate of cooling will be in the ratio :

    A) 2:1

    B) 1:1

    C) 1 : 2

    D) 1 : 4

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  • question_answer23) The formation of ice is started in a lake with water at \[0{}^\circ C\]. When the atmospheric temperature is -\[10{}^\circ C\]. If time taken for 1 cm of ice to be formed is 7 hours, the time taken for the thickness of ice to increase from 1 cm to 2 cm is :

    A) less than 7 hours

    B) 7 hours

    C) more than 14 hours

    D) more than 7 hours but less than 14 hours

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  • question_answer24) If an ideal flask containing hot coffee is shaken, the temperature of the coffee will :

    A) decrease

    B) increase

    C) remain same

    D) decrease if temperature is below \[4{}^\circ C\] and increase if temperature is equal to or more than \[4{}^\circ C\]

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  • question_answer25) Water is used to cool the radiators of engines in cars because :

    A) of its low boiling point

    B) of its high specific heat

    C) of its low density

    D) of its easy availability

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  • question_answer26) Suppose radius of the moons orbit around the earth is doubled. Its period around the earth will become :

    A) 1/2 times

    B) \[\sqrt{2}\] times

    C) \[{{2}^{2/3}}\]times

    D) \[{{2}^{3/2}}\] times

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  • question_answer27) A sphere is accelerated upwards by a cord whose braking strength is four times its weight. The maximum acceleration with which the sphere can move up without breaking the cord is :

    A) \[g\]

    B) 3g

    C) 2g

    D) 4g

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  • question_answer28) The potential due to dipole at a point is proportional to :

    A) \[{{r}^{-}}^{2}\]

    B) \[{{r}^{3}}\]

    C) \[{{r}^{2}}\]

    D) r

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  • question_answer29) The capacitance of a spherical conductor with radius 1 m is :

    A) \[9\times {{10}^{-}}^{9}F\]

    B) 1\[\mu \]F

    C) \[2.5\times {{10}^{-10}}F\]

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

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  • question_answer30) A body moves for a total of nine second starting from rest with uniform acceleration and then with uniform retardation, which is twice the value of acceleration and then stops. The duration. of uniform acceleration is:

    A) 3 s

    B) 4.5 s

    C) 5s

    D) 6 s

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  • question_answer31) sFor achromatic combination of lenses, if we use two lenses of focal length and f respectively, dispersive powers \[\omega \] , and \[\omega \] then :

    A) \[\omega ={{\omega }_{0,}}\omega =2{{\omega }_{0,}}f=2f\]

    B) \[\omega ={{\omega }_{0,}}\omega =2{{\omega }_{0,}}f=-2f\]

    C) \[\omega ={{\omega }_{0,}}\omega =2{{\omega }_{0,}}f=f/2\]

    D) \[\omega ={{\omega }_{0,}}\omega =2{{\omega }_{0,}}f=-f/2\]

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  • question_answer32) A convex lens makes a real image of 4 cm long on a screen. When the lens is shifted to a new position without disturbing the object or the screen, we get a real image on the screen, which is 16 cm long. The length of the object is :

    A) 1/4 cm

    B) 8 cm

    C) 20 cm

    D) 2 cm

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  • question_answer33) In a sinusoidal wave, the time required for a particular point to move from maximum displacement is 0.17 sec. Then the frequency of the wave is :

    A) 0.38 Hz

    B) 0.78 Hz

    C) 2.9 Hz

    D) 1.56 Hz

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  • question_answer34) Bernoullis principle is based on the law of conservation of :

    A) angular momentum

    B) linear momentum

    C) mass

    D) energy

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  • question_answer35) The colour of a star indicates its :

    A) temperature

    B) distance

    C) velocity

    D) size

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  • question_answer36) Efficiency of a HW rectifier is nearly :

    A) 80%

    B) 60%

    C) 40%

    D) 20%

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  • question_answer37) The current in a diode is related to the voltage V by the equation :

    A) \[I\propto {{V}^{1/2}}\]

    B) \[I\propto {{V}^{3/2}}\]

    C) \[I\propto {{V}^{2}}\]

    D) \[I\propto V\]

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  • question_answer38) An X-ray photon has a wavelength \[0.01\overset{\text{o}}{\mathop{\text{A}}}\,\]. Its momentum (in \[kgm{{s}^{-1}}\] ) is :

    A)  \[6.66\times {{10}^{-22}}\]                        

    B)  \[3.3\times {{10}^{-32}}\]

    C)  \[6.6\times {{10}^{-22}}\]                           

    D)  0

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  • question_answer39) The equation\[{{4}_{1}}{{H}^{1}}{{\xrightarrow{{}}}_{2}}H{{e}^{4++}}+2{{e}^{+}}+26MeV\] represents:

    A) \[\gamma \]-decay

    B) \[\beta \]-decay

    C) fission

    D) fusion

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  • question_answer40) An infinitely long straight conductor is bent into the shape as shown in figure. It carries a current \[i\] A and radius of the circular loop is \[r\] m. The magnetic field at the centre of the loop is :

    A) \[{{\mu }_{0i}}(\pi -1)2\pi r\]

    B) \[{{\mu }_{0i}}(\pi +1)2\pi r\]

    C) \[{{\mu }_{i}}/2\pi r\]

    D) none of the above

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  • question_answer41) The dimensional formula for thermal resistance is :

    A) \[{{\text{M}}^{\text{-1}}}{{\text{L}}^{\text{-2}}}{{\text{T}}^{\text{3}}}\text{ }\!\!\theta\!\!\text{ }\]

    B) \[{{\text{M}}^{\text{-1}}}{{\text{L}}^{\text{-2}}}{{\text{T}}^{\text{3}}}\text{ }\!\!\theta\!\!\text{ }\]

    C) \[\text{M}{{\text{L}}^{\text{-2}}}{{\text{T}}^{2}}\text{ }\!\!\theta\!\!\text{ }\]

    D) \[\text{M}{{\text{L}}^{\text{-2}}}{{\text{T}}^{-2}}{{\text{ }\!\!\theta\!\!\text{ }}^{-1}}\]

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  • question_answer42) A truck travelling due north at 20 ms turns west and travels with same speed. What is the change in velocity?

    A) \[20\sqrt{2\,}\,m{{s}^{-1}}\]south-west

    B) 40 ms-1 south-West

    C) \[20\sqrt{2\,}\,m{{s}^{-1}}\] north-west

    D) \[40\text{ }m{{s}^{-1}}\] north-west

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  • question_answer43) An iron bar of length I and having a cross-section A is heated from 0 to 100?C. If this bar is so held that it is not permitted to expand or bend, the force that is developed, is :

    A) inversely proportional to the cross-sectional area of the bar

    B) independent of the length of the bar

    C) inversely proportional to the length of the bar

    D) directly proportional to the length of the bar

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  • question_answer44) A body of uniform cross-sectional area floats in a liquid of density thrice its value. The fraction of exposed height will be:

    A) 2/3

    B) 5/6

    C) 1/6

    D) 1/3

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  • question_answer45) The restoring force of S.H.M. is maximum when particle :

    A) displacement is maximum

    B) half way between them

    C) when crossing mean position

    D) at rest

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  • question_answer46) Two forces of 12N and 8N act upon a body. The resultant force on the body has a maximum value of :

    A) 4N

    B) ON

    C) 20N

    D) 8N

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  • question_answer47) Which of following pairs does not have similar dimensions?

    A) Plancks constant and angular momentum

    B) Tension and surface tension

    C) Angle and strain

    D) Stress and pressure

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  • question_answer48) Four lenses are made from the same type of glass. The radius of curvature of each face is given below. Which will have the greatest positive power?

    A) 10 cm convex and 15 concave

    B) 5 cm convex and 10 cm concave

    C) 15 cm convex and plane

    D) 20 cm convex and 30 cm concave

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  • question_answer49) The slope of a graph drawn between threshold frequency and stopping potential is :

    A) \[e\]

    B) \[h\]

    C) \[\frac{h}{e}\]

    D) \[he\]

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  • question_answer50) The truth table given below belongs for which gate ?

    A B C
    0 0 1
    0 1 1
    1 0 1
    1 1 0
     

    A)  OR                                        

    B)  XOR

    C)  AND                                     

    D)  NAND

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  • question_answer51) Action of nitrous acid on ethyl amine gives:

    A) nitro methane

    B) \[N{{H}_{3}}\]

    C) \[{{C}_{2}}{{H}_{6}}\]

    D) \[{{C}_{2}}{{H}_{5}}OH\]

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  • question_answer52) Which one of the following is least likely to act as a lewis base?

    A) \[{{I}^{+}}\]

    B) \[I\]

    C) \[SC{{l}_{2}}\]

    D) \[PC{{l}_{3}}\]

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  • question_answer53) The molecule which has T-shaped structure is:

    A) \[PC{{l}_{3}}\]

    B) \[Cl{{F}_{3}}\]

    C) \[Cl{{F}_{3}}\]

    D) \[BC{{l}_{3}}\]

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  • question_answer54) The conjugate acid of \[NH_{2}^{-}\] is:

    A) \[{{N}_{2}}{{H}_{2}}\]

    B) \[NH_{4}^{+}\]

    C) \[N{{H}_{2}}OH\]

    D) \[N{{H}_{3}}\]

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  • question_answer55) \[{{E}^{o}}\] for \[F{{e}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Fe\] is \[-0.44\]volt and\[{{E}^{o}}\] for \[Z{{n}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Zn\]is \[-0.76\]volt thus:

    A) \[Zn\] is more electropositive than \[Fe\]

    B) \[Zn\] is more electronegative than \[Fe\]

    C) \[Fe\] is more electropositive than \[Zn\]

    D) none

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  • question_answer56) Which isotope is likely to be most stable?

    A) \[_{30}Z{{n}^{66}}\]

    B) \[_{30}Z{{n}^{64}}\]

    C) \[_{30}Z{{n}^{71}}\]

    D) none

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  • question_answer57) The molecular formula of Phosphorus is:

    A) \[{{P}_{5}}\]

    B) \[{{P}_{2}}\]

    C) \[{{P}_{4}}\]

    D) \[{{P}_{1}}\]

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  • question_answer58) Polyethylene is a resin obtained by polymerization of:

    A) styrene

    B) isoprene

    C) ethylene

    D) butadiene

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  • question_answer59) The term \[\frac{-dc}{dt}\] in a rate equation refers to:

    A) the decrease in concentration of the reactant with time

    B) the concentration of a reactant

    C) the change in concentration of the reactant

    D) the velocity constant of the reaction

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  • question_answer60) \[{{H}_{3}}P{{O}_{3}}\] is:

    A) A dibasic acid

    B) A tribasic acid

    C) monobasic

    D) neutral

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  • question_answer61) Cassiterite is an ore of:

    A) iron

    B) lead

    C) mercury

    D) tin

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  • question_answer62) The substance used as pigment in paint is:

    A) borax

    B) alumina

    C) lithopone

    D) none

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  • question_answer63) A certain mass of gas occupies a volume of 2 litre at STP keeping the pressure constant. At what temperature would the gas occupy a volume of 4 litre?

    A) \[{{50}^{o}}C\]

    B) \[{{100}^{o}}C\]

    C) \[{{273}^{o}}C\]

    D) \[{{546}^{o}}C\]

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  • question_answer64) Benzoic acid dissolved in benzene shows a molecular weight of:

    A) \[61\]

    B) \[244\]

    C) \[366\]

    D) \[122\]

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  • question_answer65) In the compounds \[~KMn{{O}_{4~}}\]and \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\], the highest oxidation state is of the element:

    A) \[Mn\]

    B) \[K\]

    C) \[O\]

    D) \[Cr\]

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  • question_answer66) Among \[HF\], \[C{{H}_{4}}\], \[C{{H}_{3}}OH\] and\[{{N}_{2}}{{O}_{4}}\], inter molecular hydrogen bond is expected:

    A) in two

    B) in all

    C) in all leaving one

    D) none of these

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  • question_answer67) Which gas has the higher partial pressure in atmosphere?

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

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

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

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

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  • question_answer68) What bond order does \[L{{i}_{2}}\]have?

    A) \[3\]

    B) \[1\]

    C) \[2\]

    D) \[0\]

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  • question_answer69) The element present in gun-metal is:

    A) \[Co\]

    B) \[Cu\]

    C) \[Sc\]

    D) \[Ti\]

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  • question_answer70) The weakest acid is:

    A) \[HI\]

    B) \[HBr\]

    C) \[HCl\]

    D) \[HF\]

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  • question_answer71) Carborundum is the commercial name of:

    A) \[A{{l}_{2}}{{O}_{3}}\]

    B) \[SiC\]

    C) \[BN\]

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

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  • question_answer72) Which conversion is an oxidation?

    A) \[SO_{4}^{2-}....SO_{3}^{2-}\]

    B) \[C{{u}^{2+}}....Cu\]

    C) \[{{H}^{+}}....H\]

    D) \[{{H}^{-}}....H\]

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  • question_answer73) Ionic hydrides react with water to give :

    A) hydride ions

    B) acidic solutions

    C) protons

    D) basic solutions

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  • question_answer74) For the cell,\[TI+T{{I}^{+}}(0.01M)||{{C}^{2+}}(0.1)M|Cu\]\[{{E}_{cell}}\] at x\[{{25}^{o}}C\] is \[0.83V\]. \[{{E}_{cell}}\]can be increased:

    A) by decreasing \[[C{{u}^{2+}}]\]

    B) by increasing \[[C{{u}^{2+}}]\]

    C) by increasing \[[T{{I}^{+}}]\]

    D) none

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  • question_answer75) Electrolytes, when dissolved in water, dissociate into their constituent ions. The degree of dissocation of a weak electrolyte increases with:

    A) the presence of a substance yielding common ion

    B) decreasing temperature

    C) decreasing Concentration of the electrolyte

    D) increasing concentration of the electrolyte

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  • question_answer76) The number of p-electrons in bromine atom is:

    A) \[12\]

    B) \[15\]

    C) \[7\]

    D) \[17\]

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  • question_answer77) If the ionization potential for hydrogen atom is\[13.6eV\], then the ionization potential for \[H{{e}^{+}}\] ion should be:

    A) \[13.6eV\]

    B) \[6.8eV\]

    C) \[54.4eV\]

    D) \[72.2eV\]

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  • question_answer78) Pinacol is:

    A) 3-methyl butan-2-ol

    B) 2, 3-dimethyl-2, 3-butandiol

    C) 2, 3-dimethyl-2-propanone

    D) none

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  • question_answer79) In glycine, the basic group is:

    A) \[-CO{{O}^{-}}\]

    B) \[-COOH\]

    C) \[-N{{H}_{2}}\]

    D) \[-NH_{3}^{+}\]

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  • question_answer80) Which alkyl halide is preferentially hydrolysed by \[S{{N}^{1}}\]mechanism?

    A) \[{{(C{{H}_{3}})}_{3}}C.Cl\]

    B) \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}Cl\]

    C) \[C{{H}_{3}}C{{H}_{2}}Cl\]

    D) \[C{{H}_{3}}Cl\]

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  • question_answer81) The number of Ti-bonds present in propyne is:

    A) \[4\]

    B) \[1\]

    C) \[3\]

    D) \[2\]

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  • question_answer82) When metals react with non-metals, the metal atoms tend to?

    A) share electrons

    B) lose electrons

    C) gain electrons

    D) none

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  • question_answer83) \[1kg\]of \[NaOH\]solution contains \[4g\] of \[NaOH\]. The approximate concentration of the solution is:

    A) about \[0.1N\]

    B) decinormol

    C) 0.1 molal

    D) 0.1 molar

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  • question_answer84) How much of solution \[0.1\,M\,{{H}_{2}}S{{O}_{4}}\] is required to neutralize \[50ml\]of \[0.2M\] solution:

    A) \[50ml\]

    B) \[5.0ml\]

    C) \[0.50\text{ }ml\]

    D) \[100ml\]

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  • question_answer85) The rate for the reaction\[RCl+NaO{{H}_{(aq)}}\xrightarrow{{}}ROH+NaCl\]is given by rate \[=k[RCl]\], the freezing point of the reaction is:

    A) unaffacted by increasing the temp. of the reaction

    B) decreased on increasing the temp. of the reaction

    C) halved on reducing the concentration of \[RCl\] to half

    D) doubled on doubling the concentration of \[NaOH\]

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  • question_answer86) The sub atomic particle, not found in the nucleus, is:

    A) proton

    B) neutron

    C) electron

    D) none

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  • question_answer87) Emission of a beta particle by an atom of an element results in the formation of:

    A) isomer

    B) isotope

    C) isobar

    D) isomorph

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  • question_answer88) Which type of isomerism is most common among ethers?

    A) Metamerism

    B) Functional

    C) Chain

    D) Position

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  • question_answer89) glucose is hydrolysed by zymase into:

    A) amino acids

    B) alcohol

    C) aromatic acids

    D) dicarboxylic acid

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  • question_answer90) For the equilibrium,\[PC{{l}_{5}}PC{{l}_{3}}+C{{l}_{2}},{{K}_{c}}=\frac{{{\alpha }^{2}}}{(1-\alpha )V}\]temperature remaining constant:

    A) \[{{K}_{c}}\] may increase or decrease with the change in volume depending upon its numerical value

    B) \[{{K}_{c}}\] will increase with the increase in volume

    C) \[{{K}_{c}}\] will increase with the decrease in volume

    D) \[{{K}_{c}}\] will not change with the change in volume

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  • question_answer91) \[20g\]of a binary electrolyte (mol. \[wt=100\]) are dissolved in \[500g\]of water. The depression in freezing point of the solution is \[{{0.74}^{o}}C\]\[({{K}_{f}}=1.86K\,molalit{{y}^{-1}})\] The degree of ionization of the electrolyte is:

    A) \[0%\]

    B) \[100%\]

    C) \[75%\]

    D) \[50\]

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  • question_answer92) A spontaneous change is one in which the system suffers:

    A) a lowering of free energy

    B) a lowering of energy

    C) an increase in internal energy

    D) no energy change

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  • question_answer93) According to equation,\[{{C}_{6}}{{H}_{6}}(l)+\frac{15}{2}{{O}_{2}}(g)\xrightarrow{{}}3{{H}_{2}}O(l)+6C{{O}_{2}}(g)\]\[\Delta H=-3264.4kJ/\,mol\]. The energy evolved when \[7.8g\]of benzene is burnt in air will be:

    A) \[3.264\text{ }kJ/mol\]

    B) \[32.64\text{ }kJ/mol\]

    C) \[326.4\text{ }kJ/mol\]

    D) \[163.22\text{ }kJ/mol\]

    View Answer play_arrow
  • question_answer94) When \[PC{{l}_{5}}\]reacts with sulphuric acid, sulphuryl chloride \[(S{{O}_{2}}C{{l}_{2}})\] is formed as the final product. This shows that sulphuric acid:

    A) has two hydroxyl groups in its structure

    B) is a derivative of sulphur dioxide

    C) is a dibasic acid

    D) has greater affinity for water

    View Answer play_arrow
  • question_answer95) In which reaction addition takes place according to Markownikoffs rule?

    A) \[C{{H}_{3}}CH=CHC{{H}_{3}}+B{{r}_{2}}\xrightarrow{{}}\]

    B) \[C{{H}_{2}}\text{ =}C{{H}_{2}}+HBr\xrightarrow{{}}\]

    C) \[C{{H}_{3}}CH=C{{H}_{2}}+HBr\xrightarrow{{}}\]

    D) \[C{{H}_{3}}CH=C{{H}_{2}}+B{{r}_{2}}\xrightarrow{{}}\]

    View Answer play_arrow
  • question_answer96) Which statement is false? (Assume complete dissociation in each case):

    A) If \[2.0\]litre of a solution of \[{{H}_{2}}S{{O}_{4}}\] contains \[0.1\]mole, then pH of the solution is 2

    B) The concentration of \[O{{H}^{-}}\] in \[0.005M\]\[HN{{O}_{3}}\] is \[2.0\times {{10}^{-12}}mol/l\]

    C) The pH of \[0.01M\] \[KOH\] is 12

    D) In a \[0.001\text{ }M\]solution of \[NaOH\] the concentration of \[{{H}^{+}}\] is \[{{10}^{-3}}mol/litre\]

    View Answer play_arrow
  • question_answer97) The hydrolysis constant of a salt of weak acid and weak base is inversely proportional to:

    A) ionic product of water

    B) dissocation constant of both weak acid and weak base

    C) dissociation constant of weak acid

    D) dissociation constant of weak base

    View Answer play_arrow
  • question_answer98) Acetamide and ethyl amine are distinguished by reacting with: -

    A) \[B{{r}_{2}}\] water

    B) acidic \[KMn{{O}_{4}}\]

    C) aq. \[NaOH\] and heat

    D) aq. \[HCl\] and heat

    View Answer play_arrow
  • question_answer99) Which shows the easier electrophilic substitution in ring?

    A) N-acetyl aniline

    B) \[{{C}_{6}}{{H}_{5}}N{{H}_{3}}Cl\]

    C) Aniline

    D) Nitrobenzene

    View Answer play_arrow
  • question_answer100) \[300\text{ }ml\]of a gas at \[{{27}^{o}}C\]is cooled to \[-{{3}^{o}}C\]at constant pressure. The final volume is:

    A) \[350\,l\]

    B) \[270\text{ }ml\]

    C) \[540\text{ }ml\]

    D) \[135\text{ }ml\]

    View Answer play_arrow
  • question_answer101) Pasteur and Koch are related to :

    A) discovery of nucleic acids (DNA and RNA)

    B) discovery of ultracentrifuge

    C) germ theory of disease

    D) gene splicing

    View Answer play_arrow
  • question_answer102) Upon amniocentesis of a pregnant woman, it is found that the embryo contains both, Barr body and F-body. The syndrome likely to be associated with the embryo is :

    A) Edwards syndrome

    B) Downs syndrome

    C) Klinefelters syndrome

    D) Pataus syndrome

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  • question_answer103) The retina of nocturnal birds contain :

    A) cones only

    B) rods only

    C) both a and b

    D) either a or b

    View Answer play_arrow
  • question_answer104) Among the following which one is longest phase in prophase of meiosis?

    A) Leptotene

    B) Zygotene

    C) Pachytene

    D) Diplotene

    View Answer play_arrow
  • question_answer105) The cavity in the region of diencephalon in the brain of rabbit is called :

    A) lateral ventricle

    B) third ventricle

    C) foramen of monro

    D) iter

    View Answer play_arrow
  • question_answer106) Graafian follicle contains :

    A) oogonial cells

    B) corpus luteum

    C) theca externa and theca interna

    D) corpus albicans

    View Answer play_arrow
  • question_answer107) Excretion means :

    A) formation of those substances which have some role in the body

    B) removal of such substances which have never been part of the body

    C) removal of useless substances and substances present in excess

    D) all of the above

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  • question_answer108) Arthropoda are characterised by :

    A) jointed appendages

    B) open blood vascular system

    C) triploblastic

    D) all of the above

    View Answer play_arrow
  • question_answer109) A red blood cell (RBC) was kept in a certain solution for few minutes and it got burst. The said solution was :

    A) isotonic

    B) concentrated sugar solution

    C) hypertonic

    D) hypotonic

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  • question_answer110) The alternate host of Taenia saginata is :

    A) cow

    B) pig

    C) dog

    D) none of these

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  • question_answer111) Mammary glands are modified :

    A) sweat glands

    B) ceruminous glands

    C) glands of Zeis

    D) inguinal glands

    View Answer play_arrow
  • question_answer112) End of long bones are covered with :

    A) muscles

    B) cartilage

    C) adipose tissue

    D) bone marrow

    View Answer play_arrow
  • question_answer113) Which one of the following is correct?

    A) Mesoderm - brain

    B) Ectoderm - liver

    C) Mesoderm-skeleton

    D) Endodermis - epidermis

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  • question_answer114) The generic name of tusk shell is :

    A) Dentalium

    B) Chaetoderma

    C) Chiton

    D) Neopuna

    View Answer play_arrow
  • question_answer115) From Ascaris egg, first larva hatches out in the :

    A) intestine of host

    B) stomach of host

    C) outside the body

    D) uterus of female Ascaris

    View Answer play_arrow
  • question_answer116) Which of the following presumably possesses a cranial capacity larger than modem man ?

    A) Neanderthal man

    B) Pecking man

    C) Australopithecus

    D) Cro-magnon man

    View Answer play_arrow
  • question_answer117) Spontaneous generation theory was given by :

    A) F. Reddi

    B) L. Splanzanii

    C) Louis Pasteur

    D) Aristotle

    View Answer play_arrow
  • question_answer118) Electro cardiograph was developed by :

    A) Hans Berger

    B) Willem Kolff

    C) Willem Einthoran

    D) Wiehelm Roentgen

    View Answer play_arrow
  • question_answer119) Various enzymes and hormones can be produced on large scale by employing the recombinant :

    A) DNA technique

    B) RNA technique

    C) viral technique

    D) bacterial technique

    View Answer play_arrow
  • question_answer120) Which structure is not related to respiration in frog ?

    A) Diaphragm

    B) Skin

    C) Buccal cavity

    D) Lungs

    View Answer play_arrow
  • question_answer121) Increase of blood sugar level is known as :

    A) diabetes insipidus

    B) diabetes mellitus

    C) hypoglycemia

    D) both a and b

    View Answer play_arrow
  • question_answer122) Mosaic disease in tobacco is due to :

    A) bacteria

    B) virus

    C) mycoplasma

    D) algae

    View Answer play_arrow
  • question_answer123) Pulse beat is measured from :

    A) arteries

    B) veins

    C) capillaries

    D) nerves

    View Answer play_arrow
  • question_answer124) Which of the following are examples of vestigial structures in man ?

    A) Wisdom tooth, head, nails

    B) Wisdom tooth, vermiform appendix, hair

    C) Wisdom tooth, vermiform appendix, coccyx

    D) All of the above

    View Answer play_arrow
  • question_answer125) Immunoglobulins are made up of :

    A) two polypeptide chains

    B) four polypeptide chains

    C) three amino acids only

    D) five nucleotides

    View Answer play_arrow
  • question_answer126) Which of the following disorders can be regarded as madness?

    A) Psychosis

    B) Epilepsy

    C) Insomnia

    D) Parkinsonism

    View Answer play_arrow
  • question_answer127) Vitamin D is produced in human body by:

    A) musjdes

    B) skin

    C) nerves

    D) none of these

    View Answer play_arrow
  • question_answer128) Common characteristics of mosquitoes, houseflies and cockroaches are :

    A) one pair each of wings and halters

    B) three pair of legs and one pair of developed wings

    C) two pair of legs and two compound eyes

    D) compound and simple eyes

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  • question_answer129) Most recent insecticides in India are :

    A) chlorinated hydrocarbons

    B) organo phosphorus compounds

    C) carbamides

    D) pyrethroids

    View Answer play_arrow
  • question_answer130) Tube feet are locomotory organs in :

    A) Annelida

    B) Mollusca

    C) Echinodermata

    D) Arthropoda

    View Answer play_arrow
  • question_answer131) Ozone depletion in stratosphere shall result in :

    A) forest fires

    B) green house effect

    C) global warming

    D) increased incidence of skin cancer

    View Answer play_arrow
  • question_answer132) Acetabulum is the cavity of :

    A) pelvic girdle of frog

    B) sternum of frog

    C) pectoral girdle of frog

    D) all of the above

    View Answer play_arrow
  • question_answer133) Which of the following is a pair of analogous organs ?

    A) Contractile vacuole in Amoeba and uriniferous tubule in frog

    B) Paddle of whale and front legs of horse

    C) Mouth parts in insects

    D) Fore limbs in lizard and wings in birds

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  • question_answer134) Role of typhlosole in earthworm is to :

    A) control blood flow

    B) increase absorptive surface area

    C) produce digestive enzymes

    D) crush food

    View Answer play_arrow
  • question_answer135) National wild life protection act was formulated during :

    A) 1972

    B) 1973

    C) 1952

    D) 1992

    View Answer play_arrow
  • question_answer136) Glucagori is secreted by :

    A) adrenal medulla

    B) P cells of islets of Langerhans

    C) a cells of islets of Langerhans

    D) adrenal cortex

    View Answer play_arrow
  • question_answer137) Scala tympani is connected to scala vestibuli by :

    A) stapes

    B) space of nuel

    C) helicoterma

    D) basilar membrane

    View Answer play_arrow
  • question_answer138) Eurythermal animals and plants are those :

    A) which can tolerate only a small variation in temperature

    B) which can tolerate large variation in temperature

    C) which cannot tolerate any change in temperature

    D) which are affected by temperature

    View Answer play_arrow
  • question_answer139) Ammoniogenesis is process of :

    A) production of \[N{{H}_{3}}\] in liver

    B) excretion of ammonia by tadpole of frog

    C) exchange of \[N{{a}^{+}}\] for \[N{{H}_{3}}\]

    D) none of the above

    View Answer play_arrow
  • question_answer140) Mollusc which does not have ink gland is :

    A) Pila

    B) Loligo

    C) Sepia

    D) Octopus

    View Answer play_arrow
  • question_answer141) If number of chromosomes in foot of fern embryo is 8, what should be the number in its spores ?

    A) 4

    B) 8

    C) 23

    D) 16

    View Answer play_arrow
  • question_answer142) Casparian strips are characteristic of :

    A) endodermis

    B) epidermis

    C) epiblema

    D) xylem vessels

    View Answer play_arrow
  • question_answer143) Which is true for meristematic tissue ?

    A) Their cells have dense cytoplasm and prominent nuclei

    B) Their cells are dead with large intercellular spaces

    C) These are usually modified for storage

    D) Their cells are most primitive, living and without nuclei

    View Answer play_arrow
  • question_answer144) When funicle, chalaza and micropyle lie in one straight line or lie in same longitudinal axis the ovule is called :

    A) Anatropous

    B) Orthotropous

    C) Amphitropous

    D) Campylotropous

    View Answer play_arrow
  • question_answer145) In Funaria dispersal of spores is achieved with the help of :

    A) columella

    B) calyptra

    C) peristome

    D) elaters

    View Answer play_arrow
  • question_answer146) In Finns the endosperm is :

    A) haploid

    B) diploid

    C) triploid

    D) teteraploid

    View Answer play_arrow
  • question_answer147) Chipko Movement is related to :

    A) plant conservation

    B) project tiger

    C) animal breeding

    D) operation flood

    View Answer play_arrow
  • question_answer148) In the following there is no difference :

    A) trophic level 1st and herbivores

    B) primary consumers and herbivores

    C) primary carnivore and trophic level IInd

    D) secondary consumer and herbivores

    View Answer play_arrow
  • question_answer149) Simondosia chinensis is commonly known as :

    A) amia

    B) poppy

    C) teak wood

    D) jojoba

    View Answer play_arrow
  • question_answer150) Tulsi belongs to family :

    A) Asclepiadaceae

    B) Labiatae

    C) Umbelliferae

    D) Rubiaceae

    View Answer play_arrow
  • question_answer151) Plasmid is :

    A) bacteriophage

    B) DNA molecule incorporated, in bacterial chromosome

    C) DNA molecule present in mitochondria

    D) extra chromosomal genetic element of bacteria

    View Answer play_arrow
  • question_answer152) Plant and animal cells, both have in common :

    A) cell membrane and nucleolus

    B) cell membrane and cell wall

    C) nucleolus and chlorpplast

    D) nucleus and cell wall

    View Answer play_arrow
  • question_answer153) Gibberellins cause :

    A) shortening of genetically tall plants

    B) elongation of genetically dwarf plants

    C) promotion of rooting

    D) yellowing of young leaves

    View Answer play_arrow
  • question_answer154) Which of the following is associated with synthesis of enzymes ?

    A) Translation

    B) Replication

    C) Transduction

    D) Transformation

    View Answer play_arrow
  • question_answer155) During anaerobic respiration in yeast :

    A) \[{{H}_{2}}O\] and \[C{{O}_{2}}\] are end products

    B) \[C{{O}_{2}}\], ethanol and energy are end products

    C) \[C{{O}_{2}}\] and \[{{H}_{2}}O\] are end products

    D) \[C{{O}_{2}}\], acetic acid and energy are end products

    View Answer play_arrow
  • question_answer156) Hatch and Slack cycle is found in :

    A) \[{{C}_{4}}\] plants

    B) \[{{C}_{3}}\]plants

    C) both a and b

    D) none of these

    View Answer play_arrow
  • question_answer157) The site of protein synthesis is :

    A) smooth E.R

    B) rough E.R

    C) plasmalemma

    D) nucleus

    View Answer play_arrow
  • question_answer158) The modern concept of gene is :

    A) a segment of DNA, capable of crossing over

    B) functional unit of DNA

    C) a segment of RNA

    D) a segment of chromosome

    View Answer play_arrow
  • question_answer159) The disease Oriental sore is caused by :

    A) bacteria

    B) virus

    C) protozoa

    D) fungus

    View Answer play_arrow
  • question_answer160) Viroids differ from viruses in having :

    A) naked RNA molecules only

    B) naked DNA molecules only

    C) naked DNA packed with viral genome

    D) satellite RNA packed with viral genome

    View Answer play_arrow
  • question_answer161) Quantum yield of photosynthesis is :

    A) 33%

    B) 9%

    C) 12%

    D) 8%

    View Answer play_arrow
  • question_answer162) Guttation is manifestation of :

    A) osmosis

    B) transpiration

    C) root pressure

    D) photosynthesis

    View Answer play_arrow
  • question_answer163) Water rises in the stem due to :

    A) cohesion and transpirational pull

    B) turgor pressure

    C) osmotic pressure

    D) root absorption

    View Answer play_arrow
  • question_answer164) Pensom and Jones suggested which of the following method for translocation of solute ?

    A) Osmosis

    B) Plasmolysis

    C) Diffusion

    D) Electro-osmosis

    View Answer play_arrow
  • question_answer165) Glycolysis is a part of :

    A) anaerobic respiration only

    B) aerobic respiration only

    C) both a and b

    D) Krebs cycle

    View Answer play_arrow
  • question_answer166) Which of the following movements in plants is not related to change in auxin level?

    A) Nyctinastic leaf movement

    B) Movement of root towards soil

    C) Movement of sunflower, tracking the direction of sun

    D) Movement of shoot towards light

    View Answer play_arrow
  • question_answer167) The waxy substance associated with cell wall of cork cells is :

    A) suberin

    B) cutin

    C) hemicelluloses

    D) Ugnin

    View Answer play_arrow
  • question_answer168) In which of the following there is no differentiation of bark, sap wood and heart wood ?

    A) Ashok

    B) Neem

    C) Mango

    D) Datepalm

    View Answer play_arrow
  • question_answer169) An auxotroph is :

    A) a plant that responds by bending towards sun

    B) an organism that depends on another organism for meeting its nutritional requirements

    C) a mutant which has lost its ability to synthesize one or more essential compounds

    D) a plant that is able to synthesize its own carbohydrate

    View Answer play_arrow
  • question_answer170) In plants vacuole contains :

    A) soil

    B) water and dissolved substance

    C) cytoplasm

    D) all of the above

    View Answer play_arrow
  • question_answer171) The number of base pairs per helical turn in Z-DNA is :

    A) 10

    B) 11

    C) 12

    D) 13

    View Answer play_arrow
  • question_answer172) In mushroom gills are meant for :

    A) respiration

    B) nutrition

    C) bears spores which help in reproduction

    D) enhancing buoyancy

    View Answer play_arrow
  • question_answer173) Which of the following cause disease in human beings?

    A) Rhizopus

    B) Puccinia

    C) Aspergillus

    D) Cystopus

    View Answer play_arrow
  • question_answer174) Heterosporous pteridophytes always produce :

    A) monoecious gametophytes

    B) dioecious gametophytes

    C) homothallic gametophyte

    D) none of the above

    View Answer play_arrow
  • question_answer175) Term meiosis was proposed by :

    A) Fanner and Moore

    B) Flemming

    C) Strasburger

    D) Darlington

    View Answer play_arrow
  • question_answer176) In somatic cells DNA synthesis takes place during :

    A) S-phase

    B) \[{{G}_{1}}\] phase

    C) \[{{G}_{2}}\]phase

    D) Prophase of mitosis

    View Answer play_arrow
  • question_answer177) Edible portion of mango is :

    A) endocarp

    B) mesocarp

    C) cotyledons

    D) endosperm

    View Answer play_arrow
  • question_answer178) Pigment that absorbs red and far red light is :

    A) phytochrome

    B) cytochrome

    C) carotene

    D) xanthophylls

    View Answer play_arrow
  • question_answer179) Inheritance of characters not located in the gene but the young one resembling only the female part is due to :

    A) cytoplasmic inheritance

    B) chromosomal inheritance

    C) plastid inheritance

    D) epigenesist

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  • question_answer180) Okazaki fragments are produced during the synthesis of :

    A) m-RNA

    B) Protein

    C) t-WA

    D) DNA

    View Answer play_arrow
  • question_answer181) The second meiotic division leads to :

    A) separation of sex chromosomes

    B) fresh DNA synthesis

    C) separation of chromatids and centromere

    D) separation of homologous chromosomes

    View Answer play_arrow
  • question_answer182) The true stomach in ruminants where most of digestion take place is :

    A) rumen

    B) omasum

    C) reticulum

    D) abomasums

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  • question_answer183) Which of the following cells are related with inflammatory reactions and immediate hypersensitivity?

    A) Mast cells

    B) Plasma cells

    C) Tebroblast cells

    D) All of these

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  • question_answer184) In which pneumatophores are found?

    A) Tinospora

    B) Finns

    C) Rhizophora

    D) None of these

    View Answer play_arrow
  • question_answer185) Glyoxylate cycle occurs in :

    A) lysosomes

    B) ribosomes

    C) glyoxysomes

    D) peroxisomes

    View Answer play_arrow
  • question_answer186) Axolotal is name given to larva of :

    A) Roundworm

    B) Amphioxus

    C) Ambylostoma

    D) Silkworm

    View Answer play_arrow
  • question_answer187) Polygonim type of embryosac is :

    A) 8 celled 8 nucleate

    B) 7 celled 8 nucleate

    C) 7 nucleate 8 celled

    D) A female gamete

    View Answer play_arrow
  • question_answer188) Photorespiration could easily by detected in :

    A) \[{{C}_{3}}\]plants

    B) \[{{C}_{4}}\]plants

    C) both a and b

    D) none of the above

    View Answer play_arrow
  • question_answer189) Quiescent centre theory was proposed by:

    A) Nagelli

    B) Schmidt

    C) Hanstein

    D) Clowes

    View Answer play_arrow
  • question_answer190) In which of the following tissue preparations signet ring appearance is obtained?

    A) Apithelial tissue

    B) Dense connective tissue

    C) Adipose tissue

    D) Reticular tissue

    View Answer play_arrow
  • question_answer191) Scion is term related to :

    A) Embryology

    B) Emasculation

    C) Grafting

    D) Palaeobotany

    View Answer play_arrow
  • question_answer192) Which gland in female is a counter part of Cowper gland in male ?

    A) Bartholin gland

    B) Clatoris

    C) Perineal gland

    D) None of these

    View Answer play_arrow
  • question_answer193) Correct sequence of electron acceptor of ATP synthesis is :

    A) Cyt \[a,\text{ }{{a}_{3}},\text{ }b,\text{ }c\]

    B) Cyt \[b,\text{ }c,\text{ }a,\text{ }{{a}_{3}}\]

    C) Cyt \[b,\text{ }c,\text{ }{{a}_{3}},\text{ }a\]

    D) Cyt \[c,\text{ }b,a,\text{ }{{a}_{3}}\]

    View Answer play_arrow
  • question_answer194) Regulation to restrict the movement of diseased plant material from one place to another are called :

    A) plant regulations

    B) plant quarantine

    C) plant protection

    D) crop rotation

    View Answer play_arrow
  • question_answer195) The name of first cloned sheep is :

    A) Dolly

    B) Polly

    C) Molley

    D) Holly

    View Answer play_arrow
  • question_answer196) Which of the following are symptoms of radiation desease?

    A) Red and ulcered skin

    B) Nausea and loss of hair

    C) Nausea and anaemia

    D) Ulcered skin, anaemia, nausea and loss of hair

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  • question_answer197) What is the generic name of Portugese man of war.

    A) Aurelia

    B) Obelia

    C) Physalia

    D) Velella

    View Answer play_arrow
  • question_answer198) Endemic plants are those which are :

    A) cosmopolition in distribution

    B) restricted to grow over certain areas

    C) found in artic region

    D) gregarious in habit

    View Answer play_arrow
  • question_answer199) Sigma factor is related to :

    A) RNA polymerase

    B) DNA polymerase

    C) both a and b

    D) none of these

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  • question_answer200) Double fertilization is a characteristic of :

    A) angiosperms

    B) gymnosperms

    C) thallophytes

    D) all plants

    View Answer play_arrow
  • question_answer201) Which one of the following is correctly matched regarding an Institute and its location?

    A) National Institute of -Pune Virology

    B) National Institute of -Lucknow Communicable disease

    C) Central Drug Research -Kasauli Institute

    D) National Institute of -Mumbai Nutrition

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  • question_answer202) Electron beam therapy is a kind of radiation therapy to treat :

    A) enlarged prostate gland

    B) gall bladder stones by breaking them

    C) certain types of cancer

    D) kidney stones

    View Answer play_arrow
  • question_answer203) Severe Acute Respiratory Syndrome (SARS) :

    A) is caused by a variant of Pneumococcus pneumonia

    B) is caused by a variant of the common cold virus (corona virus)

    C) is an acute form of asthma

    D) affects non-vegetarians much faster than the vegetarians

    View Answer play_arrow
  • question_answer204) Cattle fed with spoilt hay to sweet clover which contains dicumarol

    A) are healthier due to a good diet

    B) catch infections easily

    C) may suffer vitamin K deficiency and prolonged bleeding

    D) may suffer from beri-beri due to deficiency of vitamin-B

    View Answer play_arrow
  • question_answer205) If the Bengal Tiger becomes extinct :

    A) hyenas and wolves will become scars

    B) the wild areas will be safe for man and domestic animals

    C) its gene pool will be lost for ever

    D) the populations of beautiful animals like deers will get stabilized

    View Answer play_arrow
  • question_answer206) Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which Jead to :

    A) photochemical smog

    B) dry acid deposition

    C) industrial smog

    D) wet acid deposition

    View Answer play_arrow
  • question_answer207) A lake with an inflow of domestic sewage rich in organic waste may result in :

    A) drying of the lake very soon due to algal bloom

    B) an increased production of fish due to lot of nutrients

    C) death of fish due to lack of oxygen

    D) increased population of aquatic food web organisms

    View Answer play_arrow
  • question_answer208) Minimata disease was caused due to the consumption of :

    A) sea food containing lot of cadmium

    B) fish contaminated with mercury

    C) oysters with lot of pesticide

    D) sea food contaminated with selenium

    View Answer play_arrow
  • question_answer209) An artificial pace maker is implanted subcutaneously and connected to the heart in patients :

    A) having 90% blockage of the three main coronary arteries

    B) having a very high blood pressure

    C) with irregularity in the heart rhythm

    D) suffering from arteriosclerosis

    View Answer play_arrow
  • question_answer210) An example of gene therapy is :

    A) production of in jectable hepatitis B vaccine

    B) production of vaccines in food crops like potatoes which can be eaten

    C) introduction of gene for adenosine deaminase in persons suffering from Severe Combined Immuno deficiency (SCID)

    D) production of test tube babies by artificial insemination and implantation of fertilized eggs

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  • question_answer211) The pollen tube usually enters the embryo sac :

    A) between the egg cell and synergid

    B) by directly penetrating the egg

    C) between one synergid and antipodal cell

    D) by knocking off the antipodal cells

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  • question_answer212) What is the first step in the Southern blot technique ?

    A) Denaturation of DNA on the gel for hybridization with specific probe

    B) Production of a group of genetically identical cells

    C) Digestion of DNA by restriction enzyme

    D) Denaturation of DNA from a nucleated cell such as the one from the scene of crime

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  • question_answer213) Women who consumed the drug thalidomide for relief from vomiting during early months of pregnancy gave birth to children with :

    A) no spleen

    B) hare-lip

    C) extra fingers and toes

    D) under developed limbs

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  • question_answer214) The neem extract contains :

    A) Nicatine

    B) Cinerine

    C) Pyrethrin

    D) Azadiractin

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  • question_answer215) Which of the following type of mutation involves the reverse order of genes in a chromosome :

    A) deletion

    B) duplication

    C) inversion

    D) reciprocal translocation

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  • question_answer216) Which one of the following pairs is correctly matched with regard to the codon and the ammo acid coded by it?

    A) UUA- valine

    B) AAA- lysine

    C) AUG- cysteine

    D) CCC- alanine

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  • question_answer217) The treatment of snake-bite by antivenine is an example of :

    A) artificially acquired active immunity

    B) artificially acquired passive immunity

    C) naturally acquired passive immunity

    D) specific natural immunity

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  • question_answer218) The bacteria Psendonionas is useful because of its ability to :

    A) transfer genes from one plant to another

    B) decompose a variety of organic compounds

    C) fix atmospheric nitrogen in the soil

    D) produce a wide variety of antibiotics

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  • question_answer219) DNA is present in :

    A) chromosomes and dictyosomes

    B) chloroplasts and lysosomes

    C) mitochondria and chloroplasts

    D) mitochondria and endoplasmic reticulum

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  • question_answer220) Priming of plants promotes brandling because the axillary buds get sensitized to :

    A) ethylcne

    B) gibberellin

    C) cytokinin

    D) indole acetic acid

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  • question_answer221) The sugarcane plant has :

    A) dumb-bell shaped guard cells

    B) pentamerous flowers

    C) reticulate venation

    D) capsular fruits

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  • question_answer222) Potato and sweet potato :

    A) have edible parts which are homologous organs

    B) have edible parts which are analogous organs

    C) have been introduced in India from the same place

    D) are two species of the same genus

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  • question_answer223) In Ulothrix meiosis takes place in :

    A) cells of the filament

    B) holdfast

    C) zygote

    D) zoospores

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  • question_answer224) In a plant organ which is covered by periderm and in which the stomata are absent, some gaseous exchange still takes place through :

    A) aerenchyma

    B) crichomes

    C) pneumatophores

    D) lenticels

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  • question_answer225) Somaclonal variation can be obtained by:

    A) application of colchicine

    B) irradiation with gamma rays

    C) tissue culture

    D) hybridization

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  • question_answer226) If the high altitude birds become rare or extinct the plants which may disappear along with them are :

    A) pine

    B) oak

    C) orchids

    D) rhododendrons

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  • question_answer227) Companion cells in plants are associated with :

    A) vessels

    B) sperms

    C) sieve elements

    D) guard cells

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  • question_answer228) Mosses and ferns are found in moist and shady places because both :

    A) require presence of -water for fertilization

    B) do not need sunlight for photosynthesis

    C) depend for their nutrition on microoganisms which can survive only at low temperature

    D) cannot compete with sun-loving plants Cork cambium results in the formation of cork which becomes impermeable to

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  • question_answer229) water due to the accumulation of :

    A) resins

    B) suberin

    C) lignins

    D) tannins

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  • question_answer230) How many different types of gametes can be formed by progeny, resulting from the following cross? ?

    A) 3

    B) 8

    C) 27

    D) 64

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  • question_answer231) Cultivation of Bt cotton has been much in the news. The prefix Bt means :

    A) Barium-treated cotton seeds

    B) Bigger thread variety of cotton with better tensile strength

    C) produced by biotechnology using restriction enzymes and ligases

    D) carrying an endotoxin gene from Bacillus thuringiensis

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  • question_answer232) Which one feature is common to leech, cockroach and scorpion ?

    A) Nephridia

    B) Ventral nerve cord

    C) Cephalization

    D) Antennae

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  • question_answer233) Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that :

    A) nerve fibre is insulated by a medullary sheath

    B) sodium pump starts operating only a-t the cyton and then continues into the nerve fibre

    C) neurotransmitters are released by dendrites and not by axon endings

    D) neurotransmitters are released by the axon endings and not by dendrites

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  • question_answer234) The total number of nitrogenous bases in human genome is estimated to be about:

    A) 3.5 million

    B) 35 thousand

    C) 35 million

    D) 3.1 billion

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  • question_answer235) The great barrier reef along the east coast of Australia can be categorised as :

    A) population

    B) community

    C) ecosystem

    D) biome

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  • question_answer236) Which one of the following is a pair of endangered species ?

    A) Garden lizard and Mexican poppy

    B) Rhesus monkey and sal tree

    C) Indian peacock and carrot grass

    D) Hornbill and Indian aconite

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  • question_answer237) Which one of the following is a matching pair of a drug and its category ?

    A) Amphetamines -stimulant

    B) Lysergic acid -narcotic dimethyl amide

    C) Heroin -psychotropic

    D) Benzodiazepam -pain killer

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  • question_answer238) In which one of the following pairs the two items mean one and the same thing ?

    A) Malleus -anvil

    B) SA node-pace maker

    C) Leucocytes-lymphocytes

    D) Haemophilia-blood cancer

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  • question_answer239) Which one of the following categories of organisms do not evolve oxygen during photosynthesis ?

    A) Red algae

    B) Photosynthetic bacteria

    C) plants with Kranz anatomy

    D) Blue green algae

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  • question_answer240) A baby has been born with a small tail. It is the case exhibiting :

    A) retrogressive evolution

    B) mutation

    C) atavism

    D) metamorphosis

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  • question_answer241) Assertion: Agricultural output increased several times after introduction of DDT. Reason: DDT was the first insecticide used on a wide scale.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer242) Assertion: Diabetes in sipidus is marked by excessive urination and too much thirst of water. Reason: Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer243) Assertion: Coacervates are believed to be the precursors of life. Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer244) Assertion: Tapeworm roundworm and pinworm are endoparasites of human intestine. Reason: Improperly cooked food is the source of intestinal infections.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer245) Assertion: Fish meal is a rich source of protein for cattle and poultry. Reason: Fish meal is produced from non-edible parts of fishes like fins, tail etc.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer246) Assertion: Animals adopt different strategies to survive in hostile environment. Reason: Praying mantis is green in colour which merges with plant foliage.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer247) Assertion: Among the primates, chimpanzee is the closest relative of the present day humans. Reason : The banding pattern in the autosome numbers 3 and 6 of man and chimpanzee is remarkably similar.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer248) Assertion : Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol. Reason : A drunken person usually feels tense and less talkative.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer249) Assertion: The honey bee queen copulates only ones in her life time. Reason: The honey bee queen can lay fertilized as well as unfertilized eggs.

    A) A

    B) B

    C) C

    D) D

    E) E

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  • question_answer250) Assertion: From evolutionary point of view, human gestation period is believed to be shortening. Reason: One major evolutionary trend in humans has been the larger head undergoing relatively faster growth rate in the foetal stage.

    A) A

    B) B

    C) C

    D) D

    E) E

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