Solved papers for Uttarakhand PMT Uttarakhand PMT Solved Paper-2011

done Uttarakhand PMT Solved Paper-2011

  • question_answer1) A coil of resistance 10\[\Omega \] and an inductance 5 H is connected to a 100 V battery. The energy stored in the coil is

    A) 325 erg

    B) 125 J

    C) 250 erg

    D) 250 J

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  • question_answer2) A simple pendulum of length; has a brass bob attached at its lower end. Its period is T. If a steel bob of same size, having density \[x\] times that of brass, replaces the brass bob and its length is changed, so that period becomes, 2T then new length is

    A) \[2l\]

    B) \[4l\]

    C) \[4lx\]

    D) \[\frac{41}{x}\]

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  • question_answer3) Mass of 2 kg is moving with a string in horizontal circle with angular velocity 5 cycles/min keeping the radius constant, tension in string is doubled. Now, the angular velocity of the mass will be

    A) 14 cycles/min

    B) 10 cycles/min

    C) 2.25 cycles/min

    D) 7 cycles/min

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  • question_answer4) The equation of motion for a body executing SHM is given by\[y=1.5\text{ }sin(10~+\text{ }5)\]. Then the frequency is given by

    A) 5\[\pi \] Hz

    B) 1.5 Hz

    C) 5 Hz

    D) \[\pi \]Hz

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  • question_answer5) A black body emits heat at the rate of 20 W when its temperature is\[727{}^\circ C\]. Another black body emits heat at the rate of 15 W when its temperature is\[227{}^\circ C\]. Compare the area of the surface of the two bodies if the surrounding is at NTP.

    A) 16 : 1

    B) 1 : 4

    C) 12 : 1

    D) 1 : 12

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  • question_answer6) In order to double the separation between the molecules (keeping temperature fixed), the final pressure must be made how many times the initial pressure?

    A) Halved

    B) 1/4 A

    C) 1/8 th

    D) 1/16 th

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  • question_answer7) What is the potential energy of the soap film formed on a frame of area\[4\times {{10}^{-3}}{{m}^{2}}\]? If the area of the film is reduced by half, the change in its potential energy will be (Surface tension of the soap solution is\[{{10}^{-3}}N/m\])

    A) \[32\times {{10}^{-5}}J,\text{ }16\times {{10}^{-5}}J\]

    B) \[16\times {{10}^{-5}}J\text{ }8\times {{10}^{-5}}J\]

    C) \[48\times {{10}^{-5}}J,\text{ }12\times {{10}^{-5}}J,\]

    D) \[36\times {{10}^{-5}}J\text{ }2\times {{10}^{-5}}J\]

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  • question_answer8) A body rolls without slipping. The radius of gyration of the body about an axis passing through its centre of mass is K. The radius of the body is R. The ratio of rotational kinetic energy to translational kinetic energy is

    A) \[\frac{{{K}^{2}}}{{{R}^{2}}}\]

    B) \[\frac{{{R}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]

    C) \[\frac{{{R}^{2}}}{{{K}^{2}}+{{R}^{2}}}\]

    D) \[{{K}^{2}}+{{R}^{2}}\]

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  • question_answer9) In Metre Bridge or Wheatstone bridge for measurement of resistance, the known and the unknown resistances are interchanged. The error so removed is

    A) end correction

    B) index error

    C) due to temperature effect

    D) random error

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  • question_answer10) The compressibility of water is\[4\times {{10}^{-5}}\]per unit atmospheric pressure, 100 cc of water is subjected to a change of pressure of 100 atmosphere. The change in volume will be

    A) \[4\times {{10}^{-1}}cc\]

    B) \[4\times {{10}^{-4}}cc\]

    C) \[4\times {{10}^{-2}}cc\]

    D) \[4\times {{10}^{-3}}cc\]

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  • question_answer11) The gas in a vessel is subjected to a pressure of 20 atm at a temperature\[27{}^\circ C\]. The pressure of the gas in a vessel after one-half of the gas is released from the vessel and the temperature of the remainder is raised by\[50{}^\circ C\] is

    A) 8.5 atm

    B) 10.8 atm

    C) 11.7 atm

    D) 17 atm

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  • question_answer12) A tap supplies water at\[15{}^\circ C\]and another tap connected to geyser supplies water at\[95{}^\circ C\]. How much hot water must be taken so as to get 60 kg of water at\[35{}^\circ C\]?

    A) 5kg

    B) 10kg

    C) 15 kg

    D) 20 kg

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  • question_answer13) The magnifying power of a telescope is 9. Hen it is adjusted for parallel rays, the distance between the objective and the eye-piece is found to be 20 cm. The focal length of the lenses are

    A) 18 cm, 2 cm

    B) 11 cm, 9 cm

    C) 10 cm, 10 cm

    D) 11 cm, 5 cm

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  • question_answer14) If the energy of a 100\[\pi F\] capacitor charged to 6 kV could all be used to lift a 50 kg mass, hat would be the greatest vertical height through which mass could be raised?

    A) 0.6 mm

    B) 3.6 m

    C) 1.2 mm

    D) 12 m

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  • question_answer15) The daniel cell is balanced on 125 cm length of a potentiometer. Now the cell is short circuited by a resistance\[2\,\Omega \] and the balance is obtained at 100 cm. The internal resistances of the Daniel cell is

    A) \[\frac{4}{5}\Omega \]

    B) 1.5 \[\Omega \]

    C) 1.25 \[\Omega \]

    D) 0.5\[\Omega \]

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  • question_answer16) Among which the magnetic susceptibility does not depend on the temperature?

    A) Diamagnetism

    B) Paramagnetism

    C) Ferromagnetism

    D) Ferrite

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  • question_answer17) A galvanometer has a current range of 15 mA and voltage range 750 mV. To convert this galvanometer into an ammeter of range 25 A, the shunt required is

    A) 0.8 \[\Omega \]

    B) 0.93 \[\Omega \]

    C) 0.03 \[\Omega \]

    D) 2.0 \[\Omega \]

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  • question_answer18) In an atom, two electrons move around the nucleus in circular orbits or radii R and 4R. The ratio of the times taken by them to complete one revolution will be

    A) 8 :1

    B) 1 : 4

    C) 4 : 1

    D) 1: 8

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  • question_answer19) The moment of magnet is\[0.1\text{ }A-{{m}^{2}}\]and the force acting on each pole in a uniform magnetic field of 0.36 oersted is\[1.44\times {{10}^{-4}}\] N. The distance between the poles of magnet is

    A) 2.5 cm

    B) 5.0 cm

    C) 1.25cm

    D) 1.17cm

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  • question_answer20) 1 kg of water is evaporated from 6 kg of sea water containing 4% salt. The percentage of salt in the remaining solution will be

    A) 1%

    B) 3.33%

    C) 4%

    D) 4.8%

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  • question_answer21) A certain radioactive substance has a half-life of 5 years. Thus, for a nucleus in a sample of the element, the probability of decay in 10 years is

    A) 50%

    B) 75%

    C) 100%

    D) 60%

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  • question_answer22) An L-C resonant circuit contains a 400 pF capacitor and a 100 \[\mu H\] inductor. It is set in to oscillation coupled to an antenna. the wavelength of the radiated electromagnetic waves is

    A) 377 mm

    B) 377 m

    C) 377 cm

    D) 3.77 cm

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  • question_answer23) Four resistance of 10\[\Omega \], 60 \[\Omega \] 100 \[\Omega \] and 200 \[\Omega \] respectively taken in order are used to form a. Wheatstones bridge. A 15 V battery is connected to the ends of a 200\[\Omega \], resistance the current through it will be

    A) \[7.5\times {{10}^{-5}}A\]

    B) \[7.5\times {{10}^{-4}}A\]

    C) \[7.5\times {{10}^{-3}}A\]

    D) \[7.5\times {{10}^{-2}}A\]

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  • question_answer24) A reversible engine working between the temperature limits of 600 K and 1200 K receives 50 kJ of heat. The work done by the engine will be

    A) 50 kJ

    B) 100 kJ

    C) 25 kJ

    D) \[-25\text{ }kJ\]

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  • question_answer25) Platinum and silicon are heated up to\[250{}^\circ C\] and after that cooled. In this process of cooling

    A) resistance of platinum will increase and that of silicon will decrease

    B) resistance of silicon will increase and that of platinum will decrease

    C) resistance of both will decrease

    D) resistance of both will increase

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  • question_answer26) A ball after falling freely from a height of 4.9 m strikes a horizontal plane. If the coefficient of restitution is\[\frac{3}{4},\]the ball will strike second time 4 with the plane after

    A) \[\frac{1}{2}s\]

    B) \[1\,s\]

    C) \[\frac{3}{2}s\]

    D) \[\frac{3}{4}s\]

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  • question_answer27) A particle covers equal distance around a circular path, in equal internals of time. Which of the following quantities connected with the motion of the particle remains constant with time?

    A) Velocity

    B) Acceleration

    C) Speed

    D) Displacement

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  • question_answer28) A 500 kg horse pulls a cart of mass 1500 kg along a level road with an acceleration of\[1\text{ }m/{{s}^{2}}\]. If the coefficient of sliding friction is 0.2, then the horizontal force exerted by the earth on the horse is

    A) 300 kg wt

    B) 400 kg wt

    C) 500 kg wt

    D) 600 kg wt

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  • question_answer29) The transfer ratio \[\beta \] of a transistor is 50. The input resistance of the transistor when used in the common emitter mode is 1 k\[\Omega \]. The peak value of the collector alternating current for an input peak voltage of 0.01 V is

    A) 0.25 \[\mu A\]

    B) 0.01 \[\mu A\]

    C) 500 \[\mu A\]

    D) 100 \[\mu A\]

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  • question_answer30) If an electron enters a magnetic field with its velocity pointing in the same direction as the magnetic field, then the

    A) electron will turn to its right

    B) electron will turn to its left

    C) velocity of the electron will increase

    D) velocity of the electron will remain Unchanged

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  • question_answer31) Two charges of magnitude\[4\times {{10}^{-3}}C\]and \[6\times {{10}^{-8}}C\]at A and B are 50 cm apart. The electric potential is zero at a point along AB, where distance from A is given by

    A) 40 cm

    B) 20 cm

    C) 10 cm

    D) 30 cm

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  • question_answer32) Two pendulums begin to swing simultaneously. The first pendulum makes 9 full oscillations while the other makes 7 oscillations. The ratio of lengths of the two pendulums is

    A) \[\frac{9}{7}\]

    B) \[\frac{7}{9}\]

    C) \[\frac{49}{81}\]

    D) \[\frac{81}{49}\]

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  • question_answer33) The temperature of source and sink of a Carnot engine are\[327{}^\circ C\]and\[27{}^\circ C\] respectively. The efficiencies of the engine is

    A) \[1-\left( \frac{27}{327} \right)\]

    B) \[\frac{27}{327}\]

    C) \[0.5\]

    D) \[0.7\]

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  • question_answer34) The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate by using the formula \[p=\frac{F}{{{l}^{2}}}.\] If the maximum errors in the measurement of force and length are 4% and 2% respectively. Then the maximum error in the measurement of pressure is

    A) 1%

    B) 2%

    C) 8%

    D) 10%

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  • question_answer35) A point initially at rest moves along x-axis. Its acceleration varies with time as\[a=(61+5)\]in m/s. If it starts from origin, the distance covered in 2s is

    A) 20m

    B) 18m

    C) 16 m

    D) 25 m

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  • question_answer36) A glass marble projected horizontally from the top of a table falls at a distance \[x\] from the edge of the table. If h is the height of the table, then the velocity of projection is

    A) \[h\sqrt{\frac{g}{2x}}\]

    B) \[x\sqrt{\frac{g}{2h}}\]

    C) \[gxh\]

    D) \[gx+h\]

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  • question_answer37) A circuit has a self-inductance of 1H and carries a current of 2A. To prevent sparking, when the circuit is switched off, a capacitor which can withstand 400v is used. The least capacitance of the capacitor connected across the switch must be equal to

    A) 50 \[\mu F\]

    B) 25 \[\mu F\]

    C) 100 \[\mu F\]

    D) 12.5 \[\mu F\]

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  • question_answer38) A man wants to slide down a rope. The breaking load for the rope \[\frac{2}{3}\] rd of the weight of the man. With what minimum acceleration should fireman slide down?

    A) \[\frac{g}{4}\]

    B) \[\frac{g}{3}\]

    C) \[\frac{2g}{3}\]

    D) \[\frac{g}{6}\]

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  • question_answer39) A particle moving with a velocity equal to 0.4 m/s is subjected to an acceleration of 0.15 \[m/{{s}^{2}}\]for 2 s in a direction at right angles to its direction of motion. The resultant velocity is

    A) 0.7 m/s

    B) 0.5 m/s

    C) m/s

    D) between 0.7 and 0.1 m/s

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  • question_answer40) If the amplitude of a wave at a distance r from a point source is A, the amplitude at a distance 2 r will be

    A) \[2A\]

    B) A

    C) \[\frac{A}{2}\]

    D) \[\frac{A}{4}\]

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  • question_answer41) Mixture used for the tips of match stick is

    A) \[S+K\]

    B) \[S{{b}_{2}}{{S}_{3}}+red\,P\]

    C) \[\text{KCl}{{\text{O}}_{\text{3}}}\text{+S+white}\,\text{P}\]

    D) \[{{\text{K}}_{\text{2}}}\text{C}{{\text{r}}_{\text{2}}}{{\text{O}}_{\text{7}}}\text{+K+S}\]

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  • question_answer42) The structural formula of hypophosphorus acid is

    A)

    B)

    C)

    D)

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  • question_answer43) Which of the following has\[p\pi -d\pi \]bonding?

    A) \[NO_{3}^{-}\]

    B) \[SO_{3}^{2-}\]

    C) \[BO_{3}^{3-}\]

    D) \[CO_{3}^{2-}\]

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  • question_answer44) Ozonised oxygen can be obtained from\[{{H}_{2}}O\]by the action of

    A) conc. \[{{H}_{2}}S{{O}_{4}}\]

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

    C) \[MnSO_{4}^{2-}\]

    D) \[{{F}_{2}}\]

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  • question_answer45) Welding of magnesium can be done in an atmosphere of

    A) \[Xe\]

    B) He

    C) Kr

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

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  • question_answer46) A substance X when heated with cone.\[{{H}_{2}}S{{O}_{4}}\] liberates a gas which turns starch paper blue. The substance X is

    A) \[NaI\]

    B) \[NaBr\]

    C) \[NaCl\]

    D) \[NaN{{O}_{3}}\]

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  • question_answer47) Sangers reagent is used for the identification of

    A) side chain of amino acids

    B) number of amino acids in the peptide chain

    C) N-terminal of a peptide chain

    D) C-terminal of a peptide chain

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  • question_answer48) Which of the following is provitamin A?

    A) \[\beta -\]carotene

    B) Calciferol

    C) Chlorophyll

    D) Ergosterol

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  • question_answer49) When silver nitrate is heated to red hot what is formed?

    A) \[A{{g}_{2}}O\]

    B) \[Ag\]

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

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

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  • question_answer50) Which is used as a fungicide?

    A) \[CuS{{O}_{4}}\]and slaked lime

    B) \[CuO\] and quick lime

    C) \[CuC{{O}_{3}}\]and quick lime

    D) \[CuS{{O}_{4}}\]and calcium nitrate

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  • question_answer51) In the following nuclear reaction, the other product is \[_{52}T{{e}^{130}}{{+}_{1}}{{H}^{2}}{{\xrightarrow[{}]{{}}}_{53}}{{I}^{131}}+?\]

    A) positron

    B) one neutron

    C) proton

    D) alpha particle

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  • question_answer52) According to MO theory which of the following statements about the magnetic character and bond order is correct regarding\[O_{2}^{+}\]?

    A) Paramagnetic and bond order\[<{{O}_{2}}\]

    B) Paramagnetic and bond order\[>{{O}_{2}}\]

    C) Diamagnetic and bond order\[<{{O}_{2}}\]

    D) Diamagnetic and bond order\[>{{O}_{2}}\]

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  • question_answer53) With which of the given pairs\[C{{O}_{2}}\]resembles?

    A) \[HgC{{l}_{2}},{{C}_{2}}{{H}_{2}}\]

    B) \[{{C}_{2}}{{H}_{2}},N{{O}_{2}}\]

    C) \[HgC{{l}_{2}},\text{ }SnC{{l}_{4}}\]

    D) \[{{N}_{2}}O,\text{ }N{{O}_{2}}\]

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  • question_answer54) The order of magnitude of ionic radii of ions \[N{{a}^{+}},M{{g}^{2+}},A{{l}^{3+}}\]and\[S{{i}^{4+}}\]is

    A) \[N{{a}^{+}}>S{{i}^{4+}}>A{{l}^{3+}}>M{{g}^{2+}}\]

    B) \[M{{g}^{2+}}>N{{a}^{+}}>A{{l}^{3+}}>S{{i}^{4+}}\]

    C) \[N{{a}^{+}}>M{{g}^{2+}}>A{{l}^{3+}}>S{{i}^{4+}}\]

    D) \[S{{i}^{4+}}>A{{l}^{3+}}>M{{g}^{2+}}>N{{a}^{+}}\]

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  • question_answer55) Which one of the following has Frenkel defect?

    A) \[NaCl\]

    B) \[AgBr\]

    C) Diamond

    D) All of these

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  • question_answer56) Zn and Hg belong to the same group yet they differ in many of their properties. The property that is shared by both is

    A) they form oxide with air

    B) they react with steam readily

    C) they react with dil.\[{{H}_{2}}S{{O}_{4}}\]

    D) they react with hot\[NaOH\]

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  • question_answer57) In the extraction of copper from its sulphide ore, the metal is formed by reduction of \[C{{u}_{2}}O\]with

    A) \[FeS\]

    B) CO

    C) \[C{{i}_{2}}S\]

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

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  • question_answer58) N-methylaniline on reaction with nitrous acid gives

    A) N-nitroso-N-methylaniline

    B) p-nitroso-N-methylaniline

    C) p-nitro-N-methylaniline

    D) N-nitro-N-methylaniline

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  • question_answer59) Which of the following has the highest melting point?

    A) n-pentane

    B) Iso-pentane

    C) Neo-pentane

    D) Cyclopentane

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  • question_answer60) Identify Z in the following reaction sequence \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}OH\xrightarrow[160-180{}^\circ ]{conc.\,{{H}_{2}}S{{O}_{4}}}X\xrightarrow[{}]{B{{r}_{2}}}\] \[Y\xrightarrow[(ii)\,NaN{{H}_{2}}]{(i)\,Alc.\,LOH}Z\]

    A) \[C{{H}_{3}}CH(N{{H}_{2}})C{{H}_{2}}N{{H}_{2}}\]

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

    C) \[C{{H}_{3}}\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}\]

    D) \[C{{H}_{3}}C=CH\]

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  • question_answer61) The hydrogen bond is strongest in

    A) \[O-H---S\]

    B) \[SH---O\]

    C) \[FH---F\]

    D) \[FH---O\]

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  • question_answer62) Nitromethane is subjected to the treatment with chlorine in the presence of sodium hydroxide, the main product is

    A) monochloromethane

    B) trichloromethane

    C) chloropicrin

    D) None of the above

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  • question_answer63) According to Freundlich adsorption isotherm at high pressure, the value of\[\frac{x}{m}\]is

    A) directly proportional to pressure

    B) inversely proportional to pressure

    C) directly proportional to square of pressure

    D) independent of pressure

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  • question_answer64) The difference of water molecules in gypsum and plaster of Paris is

    A) \[\frac{5}{2}\]

    B) \[2\]

    C) \[\frac{1}{2}\]

    D) \[1\frac{1}{2}\]

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  • question_answer65) An acidified solution of potassium dichromate is turned green when

    A) hydrogen gas is bubbled through it

    B) air is passed through it

    C) zinc pieces are added to it

    D) zinc chloride is added to it

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  • question_answer66) The ionisation energy of hydrogen atom in the ground state is\[x\text{ }kJ\]. The energy required for an electron to jump from 2nd orbit to 3rd orbit is

    A) \[\frac{5x}{36}\]

    B) \[5x\]

    C) \[7.2\,x\]

    D) \[\frac{x}{6}\]

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  • question_answer67) At a given temperature, the equilibrium constants for the reactions, \[NO(g)+\frac{1}{2}{{O}_{2}}(g)N{{O}_{2}}(g)\] and \[2N{{O}_{2}}(g)2NO(g)+{{O}_{2}}(g)\] are\[{{K}_{1}}\]and\[{{K}_{2}}\]respectively. If\[{{K}_{1}}\]is\[4\times {{10}^{-3}}\]then will be

    A) \[8\times {{10}^{-3}}\]

    B) \[16\times {{10}^{-3}}\]

    C) \[6.25\times {{10}^{4}}\]

    D) \[6.25\times {{10}^{6}}\]

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  • question_answer68) At constant T and p which of the following statements is correct for the reaction, \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}C{{O}_{2}}(g)?\]

    A) \[\Delta H=\Delta E\]

    B) \[\Delta H<\Delta E\]

    C) \[\Delta H>\Delta E\]

    D) \[\Delta H\]is independent of physical state of reactants

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  • question_answer69) Sodium metal crystallises in body centred cubic lattice with the cell edge\[a=4.29\overset{o}{\mathop{\text{A}}}\,\]. What is the radius of the sodium atom?

    A) \[1.86\overset{o}{\mathop{\text{A}}}\,\]

    B) \[6.81\overset{o}{\mathop{\text{A}}}\,\]

    C) \[8.61\overset{o}{\mathop{\text{A}}}\,\]

    D) \[2.94\overset{o}{\mathop{\text{A}}}\,\]

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  • question_answer70) The major product of dehydration of\[{{(C{{H}_{3}})}_{3}}C-C{{H}_{2}}OH\]is

    A) \[{{(C{{H}_{3}})}_{2}}C=CHC{{H}_{3}}\]

    B) \[C{{H}_{3}}CH=CHC{{H}_{3}}\]

    C) \[{{(C{{H}_{3}})}_{2}}CHCH=C{{H}_{2}}\]

    D) \[{{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\]

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  • question_answer71) Urea is a diamide of

    A) carbonic acid

    B) acetic acid

    C) formic acid

    D) acetamide

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  • question_answer72) The IUPAC name of the compound, \[\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix} | \\ N{{H}_{2}} \end{smallmatrix}}{\mathop{CH}}\,-COOH\]is

    A) 2-amino-3-hydroxypropanoic acid

    B) 1-hydroxy-2-aminopropan-3-oicacid

    C) 1-amino-2-hydroxypropanoic acid

    D) 3-hydroxy-2-aminopropanoic acid

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  • question_answer73) Which one of the following is the stablest structure of cyclohexatriene?

    A) Chair form

    B) Boat form

    C) Half chair form

    D) Planar form

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  • question_answer74) Which of the following is the most reactive towards ring nitration?

    A) o-xylene

    B) Toluene

    C) p-xylene

    D) m-xylene

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  • question_answer75) One of the following is a Bronsted acid but not a Bronsted base

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

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

    C) \[HC{{O}_{3}}\]

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

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  • question_answer76) The pH of a solution obtained by mixing 50 mL of\[0.4\text{ }N\text{ }HCl\]and 50 mL of\[0.2\text{ }N\text{ }NaOH\]is

    A) \[-log\text{ }2\]

    B) \[-log\text{ 0}.2\]

    C) 1.0

    D) 2.0

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  • question_answer77) In the cell,\[Zn|Z{{n}^{2+}}({{C}_{1}})||C{{u}^{2+}}({{C}_{2}})|Cu\] \[{{E}_{cell}}-E_{cell}^{o}=0.0591\,V.\]The ratio\[\frac{{{C}_{1}}}{{{C}_{2}}}\]at 298 K will be

    A) 2

    B) \[{{10}^{-2}}\]

    C) 1

    D) 100

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  • question_answer78) If three faradays of electricity is passed through the solutions of\[AgN{{O}_{3}},CuS{{O}_{4}}\]and \[AuC{{l}_{3}},\]the molar ratio of the cations deposited at the cathode will be

    A) \[1:1:1\]

    B) \[1:2:3\]

    C) \[3:2:1\]

    D) \[6:3:2\]

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  • question_answer79) The rms velocity of\[C{{O}_{2}}\]at a temperature T (in K) is\[x\text{ }cm\text{ }{{s}^{-1}}\]. At what temperature (in K) the rms velocity of nitrous oxide would be\[4x\text{ }cm{{s}^{-1}}\]?

    A) 16 T

    B) 2T

    C) 4T

    D) 32 T

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  • question_answer80) The oxidation number and covalency of sulphur in sulphur molecule\[({{S}_{8}})\]are

    A) 0 and 2

    B) +6 and 8

    C) 0 and 8

    D) +6 and 2

    View Answer play_arrow
  • question_answer81) Which of the following statements is correct? Dielectric constant of\[{{H}_{2}}{{O}_{2}}\]

    A) increases with dilution

    B) decreases with dilution

    C) is unaffected by dilution

    D) first increases and then decreases with dilution

    View Answer play_arrow
  • question_answer82) The alumina-silica clay called bentonite is dropped from aeroplanes in the slurry form for

    A) fertilizing the soil

    B) spreading water over fires

    C) cooling the soil

    D) fumigation

    View Answer play_arrow
  • question_answer83) Which of the following on heating does not form an anhydride?

    A) Oxalic acid

    B) Succinic acid

    C) Maleic acid

    D) Glutamic acid

    View Answer play_arrow
  • question_answer84) Which of the following trihalides of P has maximum bond angle?

    A) \[P{{F}_{3}}\]

    B) \[PB{{r}_{3}}\]

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

    D) \[P{{I}_{3}}\]

    View Answer play_arrow
  • question_answer85) \[{{C}_{6}}{{H}_{5}}NM{{e}_{2}}+HCONM{{e}_{2}}\xrightarrow[{}]{POC{{l}_{3}}}\] The above reaction is called

    A) Hofmann mustard oil reaction

    B) Vilsmeier-Haack reaction

    C) Darzens reaction

    D) Arndt-Eistert reaction

    View Answer play_arrow
  • question_answer86) A typical compound which undergoes both Cannizaro reaction and aldol condensation is

    A) \[{{(C{{H}_{3}})}_{2}}CH-CHO\]

    B) \[HCHO\]

    C) \[{{C}_{6}}{{H}_{5}}CHO\]

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

    View Answer play_arrow
  • question_answer87) Which of the following sets of reactants is used for the preparation of paracetamol from phenol?

    A) \[HN{{O}_{3}},{{H}_{2}}/Pd,{{(C{{H}_{3}}CO)}_{2}}O\]

    B) \[{{H}_{2}}S{{O}_{4}},{{H}_{2}}/Pd,{{(C{{H}_{3}}CO)}_{2}}O\]

    C) \[{{C}_{6}}{{H}_{5}}{{N}_{2}}Cl,SnC{{l}_{2}}/HCl,(C{{H}_{3}}C{{O}_{2}})O\]

    D) \[B{{r}_{2}}/{{H}_{2}}O,Zn/HCl,{{(C{{H}_{3}}CO)}_{2}}O\]

    View Answer play_arrow
  • question_answer88) Ethyl acetate is obtained when methyl magnesium bromide reacts with

    A) ethyl formate

    B) acetyl chloride

    C) carbon dioxide

    D) ethyl chloroformate

    View Answer play_arrow
  • question_answer89) 150 mL of\[{{C}_{2}}HOH\](density 0.78 g/mL) is diluted to 1 L by adding water. Molality of the solution is

    A) 2.54

    B) 1.17

    C) 2.99

    D) 29.9

    View Answer play_arrow
  • question_answer90) Which of the following does not have optical isomer?

    A) \[[Co(en){{(N{{H}_{3}})}_{2}}C{{l}_{2}}]Cl\]

    B) \[[Co{{(en)}_{2}}C{{l}_{2}}]Cl\]

    C) \[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]

    D) \[[Co{{(en)}_{3}}]C{{l}_{3}}\]

    View Answer play_arrow
  • question_answer91) With oxalic acid, glycerol at\[260{}^\circ C\]gives

    A) formic acid

    B) allyl alcohol

    C) acrolein

    D) glyceraldehyde

    View Answer play_arrow
  • question_answer92) When phenolic ether is heated with HI, it yields

    A) alkyl halide + aryl halide + water

    B) alkyl halide + phenol

    C) alcohol + aryl halide

    D) aryl halide + phenol

    View Answer play_arrow
  • question_answer93) The rate constant for the reaction, \[2{{N}_{2}}{{O}_{5}}\xrightarrow[{}]{{}}4N{{O}_{2}}+{{O}_{2}}\] is\[3.0\times {{10}^{-5}}{{s}^{-1}}\]. If the rate is\[2.40\times {{10}^{-5}}\]then the concentration of\[{{N}_{2}}{{O}_{5}}\](in mol/L) is

    A) 1.4

    B) 1.2

    C) 0.04

    D) 0.8

    View Answer play_arrow
  • question_answer94) Permanent hardness of water can be removed by adding

    A) sodium chloride

    B) soda lime

    C) sodium carbonate

    D) sodium sulphate

    View Answer play_arrow
  • question_answer95) The pyrimidine bases present in DNA are

    A) cytosine and adenine

    B) cytosine and guanine

    C) cytosine and thymine

    D) cytosine and uracil

    View Answer play_arrow
  • question_answer96) Arsenic drugs are mainly used in the treatment of

    A) jaundice

    B) typhoid

    C) cholera

    D) syphilis

    View Answer play_arrow
  • question_answer97) Which of the following is a secondary pollutant?

    A) NO

    B) CO

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

    D) Phenols

    View Answer play_arrow
  • question_answer98) For a chemical reaction,.........can never be fraction.

    A) order

    B) half-life

    C) molecularity

    D) rate constant

    View Answer play_arrow
  • question_answer99) Which of the following has\[s{{p}^{2}}-\]hybridisation?

    A) \[S{{O}_{2}}\]

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

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

    D) \[SO_{4}^{2-}\]

    View Answer play_arrow
  • question_answer100) Acetic acid dissolved in benzene show a molecular mass of

    A) 30

    B) 60

    C) 120

    D) 180

    View Answer play_arrow
  • question_answer101) Wild rice originated in

    A) valley to Kashmir

    B) coast of Arabian Sea

    C) coast of Bay of Bengal

    D) delta of River Ganges

    View Answer play_arrow
  • question_answer102) Who is the famous Indian agriculturist. Scientist of International repute?

    A) B P Pal

    B) V L Chopra

    C) E A Siddiqui

    D) M S Swaminathan

    View Answer play_arrow
  • question_answer103) Mark the odd one.

    A) Family

    B) Class

    C) Taxon

    D) Phylum

    View Answer play_arrow
  • question_answer104) With which one of the following a bacterium resembles most?

    A) Yeast

    B) Virus

    C) Amoeba

    D) Anabaena

    View Answer play_arrow
  • question_answer105) Gymnosperms lack

    A) herbs

    B) shrubs

    C) trees

    D) lianas

    View Answer play_arrow
  • question_answer106) Thalamiflorae, Calyciflorae and Disciflorae are series of

    A) Polypetalae

    B) Gamopetalae

    C) Monochlamydae

    D) Monocots

    View Answer play_arrow
  • question_answer107) Cyanophycean algae are much important from point of view of

    A) food and fodder value

    B) medicinal value

    C) fibres and oils

    D) oils fertility

    View Answer play_arrow
  • question_answer108) Gill of mushrooms are meant for

    A) reproduction

    B) respiration

    C) assimilation

    D) nutrition

    View Answer play_arrow
  • question_answer109) Monoecious mosses in which antheridia and archegonia are borne on separate branches of the same plant is called

    A) synoecious mosses

    B) heteroecious mosses

    C) autoecious mosses

    D) autoecious mosses

    View Answer play_arrow
  • question_answer110) Formation of sex cells was first seen in

    A) pteridophytes

    B) bryophytes

    C) gymnosperms

    D) angiosperms

    View Answer play_arrow
  • question_answer111) Multicellular spores are released from the capsule of

    A) Riccia, Marchantia

    B) Pellia, Porella

    C) Anthoceros, Notothylas

    D) None of the above

    View Answer play_arrow
  • question_answer112) Which of the following can be seen only under the electron microscope?

    A) Ribosomes

    B) Leucoplasts

    C) Chloroplasts

    D) Chromosomes

    View Answer play_arrow
  • question_answer113) Geiger-Muller counter is used for the detection and measurement of

    A) RBCs

    B) WBCs

    C) radiation

    D) amino acids

    View Answer play_arrow
  • question_answer114) Golgi apparatus is absent in

    A) yeast

    B) liver cells

    C) higher plants

    D) blue-green algae

    View Answer play_arrow
  • question_answer115) Which of the following algae exhibits gametic meiosis?

    A) Chara

    B) Sargassam

    C) Polysiphonia

    D) Oedogonium

    View Answer play_arrow
  • question_answer116) Which one is not a carbohydrate?

    A) Starch

    B) Chitin

    C) Glycogen

    D) Methionine

    View Answer play_arrow
  • question_answer117) How many trisomics are possible in Datura?

    A) 10

    B) 24

    C) 12

    D) 30

    View Answer play_arrow
  • question_answer118) Utricularia grows in

    A) evergreen forests

    B) lakes and ponds as submerged hydrophyte

    C) bog as a marsh plant

    D) tropical deciduous forest

    View Answer play_arrow
  • question_answer119) The maize plant is monoecious and the flowers are

    A) cleistogamous

    B) unisexual

    C) bisexual

    D) neutar

    View Answer play_arrow
  • question_answer120) Seed surface produces cellulosic fibres in

    A) Helianthus

    B) Taraxacum

    C) Gossypium

    D) Xanthium

    View Answer play_arrow
  • question_answer121) Perianth is reduced to lodicules in

    A) Liliaceae

    B) Poaceae

    C) Orchidaceae

    D) Musaceae

    View Answer play_arrow
  • question_answer122) Ring porous and diffused porous wood are produced by

    A) conifers

    B) angiosperms

    C) monocots

    D) cycads

    View Answer play_arrow
  • question_answer123) Bast fibres are obtained from

    A) epidermis

    B) seed surface

    C) phloem

    D) pith

    View Answer play_arrow
  • question_answer124) Meristem, which produces vascular bundles, is

    A) procambium

    B) lateral meristem

    C) secondary meristem

    D) mass meristem

    View Answer play_arrow
  • question_answer125) In hypertonic solution, water potential of cell

    A) increases

    B) decreases

    C) first increases and then decreases

    D) remains unchanged

    View Answer play_arrow
  • question_answer126) Enzyme catalyzed reactions can be inhibited by

    A) \[Z{{n}^{2+}}\]

    B) \[M{{g}^{2+}}\]

    C) \[H{{g}^{2+}}\]

    D) \[C{{u}^{2+}}\]

    View Answer play_arrow
  • question_answer127) One of the following amino acids which one is sulphur containing one?

    A) Aspargine

    B) Proline

    C) Serine

    D) Methionine

    View Answer play_arrow
  • question_answer128) Photolysis of water is caused by

    A) PS-I

    B) PS-II

    C) Both [a] and [b]

    D) None of these

    View Answer play_arrow
  • question_answer129) Name the enzyme which changes its characteristics with change in concentration of\[{{O}_{2}}\]?

    A) RuBP carboxylase

    B) PEP

    C) PGA

    D) None of these

    View Answer play_arrow
  • question_answer130) Oxygen produced in photosynthesis comes from \[{{\text{H}}_{2}}\text{O}\] was shown by

    A) Robert Mayer

    B) Ruben and Kamen

    C) Calvin

    D) Robert Hill

    View Answer play_arrow
  • question_answer131) How many ATP and NADH; are produced in photorespiration?

    A) 2 and 4

    B) 1 and 2

    C) 4 and 6

    D) Zero

    View Answer play_arrow
  • question_answer132) Enzymes and hormones both are synthesized from

    A) endothecium

    B) inner layer

    C) archesporium

    D) tapetum

    View Answer play_arrow
  • question_answer133) The ploidy level is not the same in

    A) integument and nucellus

    B) root tip and shoot tip

    C) secondary nucleus and endosperm

    D) antipodals and synergids

    View Answer play_arrow
  • question_answer134) In the reciprocal crosses, the ploidy level does not change in

    A) embryo

    B) fruit

    C) endosperms

    D) All of these

    View Answer play_arrow
  • question_answer135) The material best for micropropagation is

    A) pollen

    B) embryo

    C) endosperm

    D) shoot or root tips

    View Answer play_arrow
  • question_answer136) Cybrids carry

    A) two similar genomes

    B) only one genome

    C) several genomes

    D) one genome and two plasmones

    View Answer play_arrow
  • question_answer137) Apical dominance is not affected by

    A) indole acetic acid

    B) gibberellins

    C) indole acetaldehyde

    D) indole butyric acid

    View Answer play_arrow
  • question_answer138) Sleeping movements in Samanea saman leaves are regulated by

    A) nitrogen

    B) potassium

    C) phosphorus

    D) magnesium

    View Answer play_arrow
  • question_answer139) Maximum amount of growth in root occurs

    A) in the presence of light

    B) at its apex

    C) behind the apex

    D) in the presence of soil

    View Answer play_arrow
  • question_answer140) Ecotypes are

    A) only morphologically different

    B) only genetically different

    C) Both [a] and [b]

    D) both morphologically and genetically similar

    View Answer play_arrow
  • question_answer141) Individuals of one kind occupying a particular geographical area are forming a

    A) community

    B) population

    C) biome

    D) species

    View Answer play_arrow
  • question_answer142) Shifting cultivation is harming much to

    A) biodiversity

    B) forestry

    C) silviculture

    D) horticulture

    View Answer play_arrow
  • question_answer143) Petrol and natural gases are found between the layers of

    A) magnetic rocks

    B) volcanic rocks

    C) igneous rocks

    D) sedimentary rocks

    View Answer play_arrow
  • question_answer144) Interlocking of food chain results into the formation of

    A) ecological pyramids

    B) energy flow

    C) food web

    D) None of the above

    View Answer play_arrow
  • question_answer145) Banana is cultivated by

    A) vegetative means

    B) bulbs

    C) seeds

    D) bulbilk

    View Answer play_arrow
  • question_answer146) Resetting of leaves in infected plants refers to

    A) etiolation

    B) chlorosis

    C) necrosis

    D) atrophy

    View Answer play_arrow
  • question_answer147) Plasmids capable of degrading octane, xylene, camphor and naphthalene occur in cells of

    A) Pseudomonas putida

    B) Bacillus subtilis

    C) Xanthomonas citri

    D) E. coli

    View Answer play_arrow
  • question_answer148) Transitional zone between two vegetation types is referred to

    A) ecotone

    B) ecotype

    C) ecades

    D) ecophenes

    View Answer play_arrow
  • question_answer149) Dischidia is a pitcher plant which

    A) shows insectivory

    B) shows parasitism

    C) shows epiphytic nature

    D) None of the above

    View Answer play_arrow
  • question_answer150) Auxin (IAA) was isolated by Thimann in 1935 from

    A) bryophytes

    B) algae

    C) fungi

    D) pteridophytes

    View Answer play_arrow
  • question_answer151) Histiocyte is a connective tissue cell which takes part in

    A) secretion

    B) phagocytosis

    C) fibre production

    D) matrix production

    View Answer play_arrow
  • question_answer152) Major cause of anaemia is deficiency of

    A) \[C{{a}^{2+}}\]

    B) \[F{{e}^{2+}}\]

    C) \[N{{a}^{+}}\]

    D) \[M{{g}^{2+}}\]

    View Answer play_arrow
  • question_answer153) Mast cells secrete

    A) heparin

    B) histamine

    C) serotonin

    D) All of these

    View Answer play_arrow
  • question_answer154) Axons serve to

    A) take away impulse from cytons

    B) bring impulse to cytons

    C) bring blood to heart

    D) None of the above

    View Answer play_arrow
  • question_answer155) Cerebral hemispheres of rat are connected by

    A) corpus luteum

    B) corpus callosum

    C) corpus albicans

    D) corpus spongiosum

    View Answer play_arrow
  • question_answer156) A renal portal system is found in

    A) man

    B) frog

    C) horse

    D) rabbit

    View Answer play_arrow
  • question_answer157) Rennin is found in

    A) bile

    B) saliva

    C) gastric juice

    D) pancreatic juice

    View Answer play_arrow
  • question_answer158) Absorption of fat-soluble vitamin requires

    A) chemotrypsin

    B) intrinsic factor

    C) pancreatic lipase

    D) None of these

    View Answer play_arrow
  • question_answer159) Rate of breathing is directly attacted by

    A) oxygen in trachea

    B) concentration of \[{{O}^{2}}\]

    C) concentration of \[C{{O}^{3}}\]

    D) diaphragm expansion

    View Answer play_arrow
  • question_answer160) Carotid labyrinth contains

    A) baroreceptors

    B) phonoreceptors

    C) chaemoreceptors

    D) olfactoreceptors

    View Answer play_arrow
  • question_answer161) Lymph capillaries differ from systemic blood capillaries in that they

    A) collapse when interstitial pressure increases

    B) are absent in the central nervous system

    C) are not lined by endothelium

    D) lack valves

    View Answer play_arrow
  • question_answer162) Which of these will be completely reabsorbed from glomerular filtrate under normal conditions in the nephrons?

    A) Urea

    B) Salts

    C) Glucose

    D) Uric acid

    View Answer play_arrow
  • question_answer163) The largest muscle in the human body is

    A) gluteus

    B) stapedius

    C) sartorius

    D) masseter

    View Answer play_arrow
  • question_answer164) In man, coccygeal bone is formed by the fusion of......... vertebrae.

    A) 3

    B) 4

    C) 5

    D) 8

    View Answer play_arrow
  • question_answer165) Myelin sheath is a layer covering

    A) muscle fibre in a vertebrate

    B) nerve fibre in a vertebrate

    C) ne rve fibre in an insect

    D) chick embryo

    View Answer play_arrow
  • question_answer166) Which one is main fuel for brain?

    A) Glucose

    B) Riboflavin

    C) Ornithine

    D) Glutamic acid

    View Answer play_arrow
  • question_answer167) Which of the following is known as cochlear duct?

    A) Scala media

    B) Scala vestibuli

    C) Scala tympani

    D) None of these

    View Answer play_arrow
  • question_answer168) The adrenal cortex secretes all the following hormones except

    A) tyrosine

    B) cholesterol

    C) glycoprotein

    D) None of these

    View Answer play_arrow
  • question_answer169) Which one is a modified lymph gland?

    A) Pineal

    B) Thymus

    C) Pituitary

    D) Thyroid

    View Answer play_arrow
  • question_answer170) The blood vessel and nerves enter the ovary through

    A) hilus

    B) zona pellucida

    C) antrum

    D) Graafian follicle

    View Answer play_arrow
  • question_answer171) In simplest type of placenta, six barriers separate maternal blood from foetal blood. How many barriers are lost in human placenta?

    A) One

    B) Four

    C) Two

    D) Three

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  • question_answer172) Decline in hearing power begins in man after

    A) 2 years

    B) 10 years

    C) 60 years

    D) 80 years

    View Answer play_arrow
  • question_answer173) The bones of old people become hard and brittle due to deposition of

    A) calcium

    B) potassium

    C) sodium

    D) carbon

    View Answer play_arrow
  • question_answer174) Highest rate of primary productivity is found in

    A) tropical rainforests

    B) coral reef and estuaries

    C) forest floor

    D) warm temperature forests

    View Answer play_arrow
  • question_answer175) Hormone used in sterile cows to induce lactation is

    A) relaxin

    B) stilbesterol

    C) oestrogen

    D) progesterone

    View Answer play_arrow
  • question_answer176) The disease, tetanus is also known as

    A) shingles

    B) gangrene

    C) lockjaw

    D) whooping cough

    View Answer play_arrow
  • question_answer177) Which of the following T-cells are destroyed by HIV?

    A) Cytotoxic T-cells

    B) Killer T-cells

    C) Suppressor T-cells

    D) Helper T-cells

    View Answer play_arrow
  • question_answer178) Humulin is a

    A) natural insulin

    B) insulin synthesized by genetically engineered E. coli

    C) human insulin synthesized by pancreas

    D) chemically synthesized insulin

    View Answer play_arrow
  • question_answer179) In Hydra, sperms and ova are formed from

    A) cnidoblasts

    B) interstitial cells

    C) epithelio-muscular cells

    D) None of the above

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  • question_answer180) How many filaments of Spirogyra are produced by germination of 100 zygospores?

    A) 100

    B) 200

    C) 400

    D) 50

    View Answer play_arrow
  • question_answer181) Muscles in sponges are

    A) striated

    B) smooth

    C) Both [a] and [b]

    D) None of these

    View Answer play_arrow
  • question_answer182) Which of these is not a cnidarian?

    A) Jellyfish

    B) Silverfish

    C) Sea anemone

    D) Physalia

    View Answer play_arrow
  • question_answer183) Cirrus in Taenia is associated with

    A) excretion

    B) digestion

    C) circulation

    D) reproduction

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  • question_answer184) During its migration in host body. Ascents passes through

    A) lungs

    B) spleen

    C) kidney

    D) skeletal muscle

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  • question_answer185) A definite number of body segments is found in

    A) slug

    B) leech

    C) earthworm

    D) tapeworm

    View Answer play_arrow
  • question_answer186) The outermost covering of the egg of housefly is

    A) chitin

    B) chorion

    C) vitelline membrane

    D) plasma membrane

    View Answer play_arrow
  • question_answer187) Pharyngeal gill-slits are found in

    A) Octopus

    B) crayfish

    C) dogfish

    D) cuttlefish

    View Answer play_arrow
  • question_answer188) Preen gland occurs in

    A) aves

    B) pisces

    C) reptiles

    D) mammals

    View Answer play_arrow
  • question_answer189) Sarcoplasmic reticulum is found in

    A) liver

    B) brain

    C) muscles

    D) All of these

    View Answer play_arrow
  • question_answer190) Select the odd one.

    A) Oleic acid

    B) Butyric acid

    C) Cupric acid

    D) Glutamic acid

    View Answer play_arrow
  • question_answer191) Which one is essential fatty acid having three double bonds?

    A) Linoleic acid

    B) Linolenic acid

    C) Arachidonic acid

    D) Clupanodonic acid

    View Answer play_arrow
  • question_answer192) Amylase is an example of

    A) ligase

    B) hydrolase

    C) transferase

    D) oxidoreductase

    View Answer play_arrow
  • question_answer193) Lipase breaks the

    A) ester bonds

    B) peptide bonds

    C) hydrogen bonds

    D) glycosidic bonds

    View Answer play_arrow
  • question_answer194) A gene, whose phenotypic effect kills the bearer, is called

    A) lethal

    B) pleiotropic

    C) supplementary

    D) complementary

    View Answer play_arrow
  • question_answer195) The segment of a DNA molecule determining the amino acid sequence of a protein, is known as

    A) operator gene

    B) regulator gene

    C) structural gene

    D) modifier gene

    View Answer play_arrow
  • question_answer196) A boy receives his X-chromosome from

    A) his mother only

    B) his father only

    C) Both father and mother

    D) Either mother or father

    View Answer play_arrow
  • question_answer197) The possibilities of hereditary and evolutionary changes are greater in species that are reproduced by

    A) fission

    B) budding

    C) sexual means

    D) spore formation

    View Answer play_arrow
  • question_answer198) The most important theory of general biology was proposed by

    A) Beadle and Tatum

    B) Watson and Crick

    C) Darwin and Wallace

    D) Mendel and Morgan

    View Answer play_arrow
  • question_answer199) Carriers of colour blindness are

    A) men

    B) women

    C) Both [a] and [b]

    D) None of these

    View Answer play_arrow
  • question_answer200) Which of these enzyme is not required for DNA synthesis?

    A) Ligase

    B) DNAse

    C) DNA polymerase

    D) RNA polymerase

    View Answer play_arrow

   

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