Solved papers for CET Karnataka Medical CET - Karnataka Medical Solved Paper-2015

done CET - Karnataka Medical Solved Paper-2015

  • question_answer1) A proton beam enters a magnetic field of \[{{10}^{-4}}\text{ }Wb\text{ }{{m}^{-2}}\]1normally. If the specific charge of the proton is \[{{10}^{11}}C\text{ }k{{g}^{-1}}\]and its velocity is \[{{10}^{9}}m\,{{s}^{-1}}\], then the radius of the circle described will be

    A) \[10m\]

    B) \[1\text{ }m~\]

    C) \[0.1m\]

    D) \[100m\]

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  • question_answer2) Two concentric coils each of radius equal to \[2\pi cm\]are placed right angles to each other. If 3 A and 4 A are the currents flowing through the two coils respectively. The magnetic induction (in Wb\[{{m}^{-2}}\]) at the centre of the coils will be

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

    B) \[7\times {{10}^{-5}}\]

    C) \[12\times {{10}^{-5}}\]

    D) \[5\times {{10}^{-5}}\]

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  • question_answer3) The resistance of the bulb filament is \[100\Omega \] at a temperature of \[{{100}^{{}^\circ }}C\]. If its temperature coefficient of resistance be 0.005 per \[^{{}^\circ }C\], its resistance will become \[200\Omega \] at a temperature

    A) \[{{400}^{{}^\circ }}C\]

    B) \[{{200}^{{}^\circ }}C\]

    C) \[{{300}^{{}^\circ }}C\]

    D) \[{{500}^{{}^\circ }}C\]

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  • question_answer4) In Wheatstones network \[P=2\Omega ,\,Q=2\Omega ,\,R=2\Omega \]and\[S=3\Omega \]. The resistance with which S is to shunted in order that the bridge may be balanced is

    A) \[2\Omega \]

    B) \[6\Omega \]

    C) \[1\Omega \]

    D) \[4\Omega \]

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  • question_answer5) Core of electromagnets are made of ferromagnetic material which has

    A) high permeability and high retentivity

    B) low permeability and low retentivity

    C) high permeability and low retentivity

    D) low permeability and high retentivity

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  • question_answer6) If there is no torsion in the suspension thread, then the time period of a magnet executing SHM is

    A) \[T=\frac{1}{2\pi }\sqrt{\frac{I}{MB}}\]

    B) \[T=2\pi \sqrt{\frac{MB}{I}}\]

    C) \[T=\frac{1}{2\pi }\sqrt{\frac{MB}{I}}\]

    D) \[T=2\pi \sqrt{\frac{I}{MB}}\]

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  • question_answer7) Two parallel wires 1 m apart carry currents of 1 A and 3 A respectively in opposite directions. The force per unit length acting between these two wires is

    A) \[6\times {{10}^{-7}}N\text{ }{{m}^{-1}}\text{ }attractive\]

    B) \[6\times {{10}^{-5}}\text{ }N\text{ }{{m}^{-1}}\text{ }attractive\]

    C) \[6\times {{10}^{-7}}\text{ }N\text{ }{{m}^{-1}}\text{ }repulsive\]

    D) \[6\times {{10}^{-5}}\text{ }N\text{ }{{m}^{-1}}\text{ }repulsive\]

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  • question_answer8) A galvanometer of resistance \[50\Omega \] gives a full scale deflection for a current \[5\times {{10}^{-4}}A\]. The resistance that should be connected in series with the galvanometer to read 3 V is

    A) \[5050\Omega \]

    B) \[5950\Omega \]

    C) \[595\Omega \]

    D) \[5059\Omega \]

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  • question_answer9) A cyclotron is used to accelerate

    A) only positively charged particles

    B) both positively and negatively charged particles

    C) Neutron

    D) Only negatively charged particles

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  • question_answer10) A transformer is used to light 100 W-110 V lamp from 220 V mains. If the main current is 0.5 A, the efficiency of the transformer is

    A) \[95%\]

    B) \[99%\]

    C) \[90%\]

    D) \[96%\]

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  • question_answer11) In an LCR circuit, at resonance

    A) The impedance is maximum

    B) The current leads the voltage by \[\pi /2\]

    C) The current and voltage are in phase

    D) The current is minimum

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  • question_answer12) An aircraft with a wingspan of 40 m flies with a speed of 1080 km/hr in the eastward direction at a constant altitude in the northern hemisphere, where the vertical component of the earths magnetic field \[1.75\times {{10}^{-5}}T\]. Then the emf developed between the tips of the wings is

    A) \[0.34V\]

    B) \[2.1V\]

    C) \[0.5V\]

    D) \[0.21V\]

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  • question_answer13) Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to the equation \[i={{i}_{m}}\sin \omega t\] where \[{{i}_{m}}=10A\] and \[\omega =100\pi \,\,rad\,\,{{s}^{-1}}\]. The maximum value of the emf induced in the second coil is

    A) \[5\pi \]

    B) \[4\pi \]

    C) \[2\pi \]

    D) \[\pi \]

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  • question_answer14) The magnetic susceptibility of a paramagnetic material at \[-{{73}^{o}}C\]is 0.0075 and its value at \[-{{173}^{o}}C\]will be

    A) \[0.0030\]

    B) \[0.0075\]

    C) \[0.0045~\]

    D) \[0.015\]

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  • question_answer15) In a Youngs double slit experiment the slit separation is 0.5 m from the slits. For a monochromatic light of wavelength 500 nm, the distance of 3rd maxima from 2nd minima on the other side is

    A) \[2.5mm\]

    B) \[2.25mm\]

    C) \[2.75mm\]

    D) \[22.5mm\]

    E) None of the Above

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  • question_answer16) Calculate the focal length of a reading glass of a person if his distance of distinct vision is 75 cm.

    A) \[37.5cm\]

    B) \[100.4cm\]

    C) \[25.6cm\]

    D) \[75.2cm\]

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  • question_answer17) A person wants a real image of his own, 3 times enlarged. Where should he stand in front of a concave mirror of radius of curvature 30 cm?

    A) \[30cm\]

    B) \[20cm\]

    C) \[10cm\]

    D) \[90cm\]

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  • question_answer18) If \[{{\varepsilon }_{0}}\] and \[{{\mu }_{0}}\] are the permittivity and permeability of free space and e and \[\mu \] are the corresponding quantities for a medium, then refractive index of the medium is

    A) \[\sqrt{\frac{\mu \varepsilon }{{{\mu }_{0}}{{\varepsilon }_{0}}}}\]

    B) Insufficient information

    C) \[\sqrt{\frac{{{\mu }_{0}}{{\varepsilon }_{0}}}{\mu \varepsilon }}\]

    D) 1

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  • question_answer19) The average power dissipated in a pure inductor is

    A) \[V{{I}^{2}}\]

    B) zero

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

    D) \[\frac{V{{I}^{2}}}{4}\]

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  • question_answer20) An a-particle of energy 5 MeV is scattered through \[{{180}^{o}}\] by gold nucleus. The distance of closest approach is of the order of

    A) \[{{10}^{-12}}cm\]

    B) \[{{10}^{-16}}cm\]

    C) \[{{10}^{-10}}cm\]

    D) \[{{10}^{-14}}cm\]

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  • question_answer21) Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV.

    A) \[102pm\]

    B) \[124pm\]

    C) \[95pm\]

    D) \[112pm\]

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  • question_answer22) Light of two different frequencies whose photons have energies 1 eV and 2.5 eV respectively, successively illuminate a metallic surface whose work function is 0.5 eV. Ratio of maximum speeds of emitted electrons will be

    A) \[1:4\]

    B) \[1:1\]

    C) \[1:5\]

    D) \[1:2\]

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  • question_answer23) The polarizing angle of glass is \[{{57}^{o}}\]. A ray of light which is incident at this angle will have an angle of refraction as

    A) \[{{33}^{o}}\]

    B) \[{{38}^{o}}\]

    C) \[{{25}^{o}}\]

    D) \[{{43}^{o}}\]

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  • question_answer24) To observe diffraction, the size of the obstacle

    A) Should be \[\lambda /2\], where \[\lambda \] is the wavelength.

    B) Should be of the order of wavelength.

    C) Has no relation to wavelength.

    D) should be much larger than the wavelength.

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  • question_answer25) A radioactive decay can form an isotope of the original nucleus with the emission of particles

    A) One \[\alpha \] and two \[\beta \]

    B) Four \[\alpha \] and one \[\beta \]

    C) One \[\alpha \]and four \[\beta \]

    D) One \[\alpha \] and one \[\beta \]

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  • question_answer26) The half-life of a radioactive substance is 20 minutes. The time taken between 50% decay and 87.5% decay of the substance will be

    A) 40 minutes

    B) 10 minutes

    C) 30 minutes

    D) 25 minutes

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  • question_answer27) A nucleus at rest splits into two nuclear parts having radii in the ratio\[1:2\]. Their velocities are in the ratio

    A) \[6:1\]

    B) \[2:1\]

    C) \[8:1\]

    D) \[4:1\]

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  • question_answer28) What is the wavelength of light for the least energetic photon emitted in the Lyman series of the hydrogen spectrum? (Take he = 1240 eV nm)

    A) \[102nm\]

    B) \[150nm\]

    C) \[82nm\]

    D) \[122nm\]

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  • question_answer29) If an electron in hydrogen atom jumps from an orbit of level n = 3 to an orbit of level n = 2, the emitted radiation has a frequency (R = Rydberg constant, C = velocity of light)

    A) \[\frac{RC}{25}\]

    B) \[\frac{5RC}{36}\]

    C) \[\frac{3RC}{27}\]

    D) \[\frac{8RC}{9}\]

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  • question_answer30) The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit?

    A) \[2.0A\]

    B) \[1.33A\]

    C) \[1.71\text{ }A\]

    D) \[2.31A\]

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  • question_answer31) Amplitude modulation has

    A) One carrier

    B) One carrier with high frequency

    C) One carrier with two side band frequencies

    D) One carrier with infinite frequencies

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  • question_answer32) An LED is constructed from a pn junction based on a certain semi-conducting material whose energy gap is 1.9 eV. Then the wavelength of the emitted light is

    A) \[1.6\times {{10}^{-8}}m\]

    B) \[9.1\times {{10}^{-5}}m\]

    C) \[2.9\times {{10}^{-9}}m\]

    D) \[6.5\times {{10}^{-7}}m\]

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  • question_answer33) The waves used for line-of-sight (LOS) communication is

    A) Space waves

    B) Sky waves

    C) Ground waves

    D) Sound waves

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  • question_answer34) The given truth table is for

    Input Out Put
    A B Y
    0 0 1
    0 1 1
    1 0 1
    1 1 0

    A) OR gate

    B) NOR gate

    C) AND gate

    D) NAND gate

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  • question_answer35) The input characteristics of a transistor in CE mode is the graph obtained by plotting

    A) \[{{I}_{B}}\] against \[{{V}_{CE}}\] at constant \[{{V}_{BE}}\]

    B) \[{{I}_{B}}\] against \[{{I}_{C}}\] at constant \[{{V}_{BE}}\]

    C) \[{{I}_{B}}\] against \[{{V}_{BE}}\] at constant \[{{V}_{CE}}\]

    D) \[{{I}_{B}}\] against \[{{I}_{C}}\] at constant \[{{V}_{CE}}\]

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  • question_answer36) A particle is projected with a velocity v so that its horizontal range twice the greatest height attained. The horizontal range is

    A) \[\frac{2{{V}^{2}}}{3g}\]

    B) \[\frac{{{v}^{2}}}{2g}\]

    C) \[\frac{{{v}^{2}}}{g}\]

    D) \[\frac{4{{v}^{2}}}{5g}\]

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  • question_answer37) The velocity - time graph for two bodies A and B are shown. Then the acceleration of A and B are in the ratio

    A) \[tan{{25}^{o}}\]to \[tan{{50}^{o}}\]

    B) \[cos{{25}^{o}}\]to \[cos{{50}^{o}}\]

    C) \[\tan {{25}^{o}}\] to \[\tan {{40}^{o}}\]

    D) \[\sin {{25}^{o}}\] to \[\sin {{50}^{o}}\]

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  • question_answer38) The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of

    A) Frequency

    B) Velocity

    C) Time

    D) Angular momentum

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  • question_answer39) Moment of inertia of a thin uniform rod rotating about the perpendicular axis passing through its centre is I. If the same rod is bent into a ring and its moment of inertia about its diameter is I, then the ratio \[\frac{I}{I}\] is

    A) \[\frac{8}{3}{{\pi }^{2}}\]

    B) \[\frac{5}{3}{{\pi }^{2}}\]

    C) \[\frac{3}{2}{{\pi }^{2}}\]

    D) \[\frac{2}{3}{{\pi }^{2}}\]

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  • question_answer40) If the mass of a body is M on the surface of the earth, the mass of the same body on the surface of the moon is

    A) \[M\]

    B) zero

    C) \[\frac{M}{6}\]

    D) \[6M\]

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  • question_answer41) The ratio of angular speed of a second-hand to the hour-hand of a watch is

    A) \[60:1\]

    B) \[72:1\]

    C) \[720:1\]

    D) \[3600:1\]

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  • question_answer42) The kinetic energy of a body of mass 4 kg and momentum 6 N s will be

    A) \[3.5J~\]

    B) \[5.5J~\]

    C) \[2.5J~\]

    D) \[4.5J~\]

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  • question_answer43) A stone of mass 0.05 kg is thrown vertically upwards. What is the direction and magnitude of net force on the stone during its upward motion?

    A) 0.49 N vertically downwards

    B) 9.8 N vertically downwards

    C) 0.49 N vertically upwards

    D) 0.98 N vertically downwards

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  • question_answer44) The ratio of kinetic energy to the potential energy of a particle executing SHM at a distance equal to half its amplitude, the distance being measured from its equilibrium position is

    A) \[4:1\]

    B) \[8:1\]

    C) \[3:1\]

    D) \[2:1\]

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  • question_answer45) 1 gram of ice is mixed with 1 gram of steam. At thermal equilibrium, the temperature of the mixture is

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

    B) \[{{55}^{o}}C\]

    C) \[{{0}^{o}}C\]

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

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  • question_answer46) Water is heated from \[{{0}^{o}}C\] to \[{{10}^{o}}C\], then its volume

    A) Increases

    B) First decreases and then increases

    C) Decreases

    D) Does not change

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  • question_answer47) The efficiency of a Carnot engine which operates between the two temperatures \[{{T}_{1}}=500K\] and \[{{T}_{2}}=300K\] is

    A) \[25%\]

    B) \[40%\]

    C) \[50%\]

    D) \[75%\]

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  • question_answer48) The ratio of hydraulic stress to the corresponding strain is known as

    A) Bulk modulus

    B) Rigidity modulus

    C) Compressibility

    D) Youngs modulus

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  • question_answer49) The angle between the dipole moment and electric field at any point on the equatorial plane is

    A) \[{{90}^{o}}\]

    B) \[{{45}^{o}}\]

    C) \[{{0}^{o}}\]

    D) \[{{180}^{o}}\]

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  • question_answer50) Pick out the statement which is incorrect.

    A) The electric field lines forms closed loop.

    B) Field lines never intersect.

    C) The tangent drawn to a line of force represents the direction of electric field.

    D) A negative test charge experiences a force opposite to the direction of the field.

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  • question_answer51) Two spheres carrying charges \[+6\mu C\] and \[+9\mu C\], separated by a distance d, experiences a force of repulsion F. When a charge of \[-3\mu C\]is given to both the sphere and kept at the same distance as before, the new force of repulsion is

    A) \[3F\]

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

    C) \[F\]

    D) \[\frac{F}{3}\]

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  • question_answer52) A stretched string is vibrating in the second overtone, then the number of nodes and antinodes between the ends of the string are respectively

    A) 3 and 2

    B) 2 and 3

    C) 4 and 3

    D) 3 and 4

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  • question_answer53) When two tuning forks A and B are sounded together, 4 beats per second are heard. The frequency of the fork B is 384 Hz. When one of the prongs of the fork A is filed and sounded with B, the beat frequency increases, then the frequency of the fork A is

    A) \[388Hz\]

    B) \[389Hz\]

    C) \[380Hz\]

    D) \[379Hz\]

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  • question_answer54) Three resistances \[2\Omega \], \[3\Omega \]. and \[4\Omega \] are connected in parallel. The ratio of currents passing through them when a potential difference is applied across its ends will be

    A) \[6:4:3\]

    B) \[4:3:2\]

    C) \[6:3:2\]

    D) \[5:4:3\]

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  • question_answer55) Four identical cells of emf E and internal resistance r are to be connected in series. Suppose if one of the cell is connected wrongly, the equivalent emf and effective internal resistance of the combination is

    A) \[4E\]and \[2r\]

    B) \[2E\] and \[2r\]

    C) \[4E\] and \[4r\]

    D) \[2E\] and \[4r\]

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  • question_answer56) A parallel plate capacitor is charged and then isolated. The effect of increasing the plate separation on charge, potential and capacitance respectively are

    A) Increases, decreases, decreases

    B) Constant, increases, decreases

    C) Constant, decreases, decreases

    D) Constant, decreases, increases

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  • question_answer57) A spherical shell of radius 10 cm is carrying a charge q. If the electric potential at distances .5 cm, 10 cm and 15 cm from the center of the spherical shell is Vi, V. and V^ respectively, then

    A) \[{{V}_{1}}<{{V}_{2}}<{{V}_{3}}\]

    B) \[{{V}_{1}}={{V}_{2}}<{{V}_{3}}\]

    C) \[{{V}_{1}}>{{V}_{2}}>{{V}_{3}}\]

    D) \[{{V}_{1}}={{V}_{2}}>{{V}_{3}}\]

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  • question_answer58) Three point charges \[3\,nC\], \[6\,nC\] and \[9\,nC\] are placed at the corners of an equilateral triangle of side 0.1m. The potential energy of the system is

    A) \[89100J\]

    B) \[99100J\]

    C) \[8910\text{ }J\]

    D) \[9910J\]

    E) None of the Above

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  • question_answer59) In the circuit shown below, the ammeter and the voltmeter readings are 3 A and 6 V respectively. Then the value of the resistance R is

    A) \[>2\Omega \]

    B) \[\ge 2\Omega \]

    C) \[2\Omega \]

    D) \[<2\Omega \]

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  • question_answer60) Two cells of emf \[{{E}_{1}}\] and \[{{E}_{2}}\] are joined in opposition (such that \[{{E}_{1}}>{{E}_{2}}\]). If \[{{r}_{1}}\] and \[{{r}_{2}}\] be the internal resistance and R be the external resistance, then the terminal potential difference is

    A) \[\frac{{{E}_{1}}+{{E}_{2}}}{{{r}_{1}}+{{r}_{2}}+R}\times R\]

    B) \[\frac{{{E}_{1}}-{{E}_{2}}}{{{r}_{1}}+{{r}_{2}}+R}\times R\]

    C) \[\frac{{{E}_{1}}+{{E}_{2}}}{{{r}_{1}}+{{r}_{2}}}\times R\]

    D) \[\frac{{{E}_{1}}-{{E}_{2}}}{{{r}_{1}}+{{r}_{2}}}\times R\]

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  • question_answer61) \[0.30g\]of an organic compound containing C, H and O on combustion yields \[0.44g\,C{{O}_{2}}\]and\[0.18g\,{{H}_{2}}O\]. If one mole of compound weighs 60, then molecular formula of the compound is

    A) \[{{C}_{3}}{{H}_{8}}O\]

    B) \[{{C}_{2}}{{H}_{4}}{{O}_{2}}\]

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

    D) \[{{C}_{4}}{{H}_{6}}O\]

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  • question_answer62) For one of the element various successive ionization enthalpies (in\[kJ\text{ }mo{{l}^{-1}}\]) are given below:

    I.E 1st 2nd 3rd 4th 5th
    \[577.5\] \[1810\] \[2750\] \[11,580\] \[14,820\]
    The element is

    A) \[P\]

    B) \[Mg\]

    C) \[Si\]

    D) \[Al\]

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  • question_answer63) The aqueous solution of following salt will have the lowest \[pH\]

    A) \[NaClO\]

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

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

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

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  • question_answer64) One of the following is an essential amino acid.

    A) Cysteine

    B) Serine

    C) Tyrosine

    D) Isoleucine

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  • question_answer65) The formation of cyanohydrin from a ketone is an example of

    A) nucleophilic addition

    B) electrophilic substitution

    C) nucleophilic substitution

    D) electrophilic addition.

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  • question_answer66) \[100c{{m}^{3}}\]of \[1M\text{ }C{{H}_{3}}COOH\]was mixed with \[100\text{ }c{{m}^{3}}\]of \[2M\text{ }C{{H}_{3}}OH\]to form an ester. The change in the initial rate if each solution is diluted with equal volume of water would be

    A) 4 times

    B) 0.25 times

    C) 2 times

    D) 0.5 times.

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  • question_answer67) How many coulombs of electricity are required for the oxidation of one mol of water to dioxygen?

    A) \[1.93\times {{10}^{4}}C\]

    B) \[19.3\times {{10}^{5}}C\]

    C) \[9.65\times {{10}^{4}}C\]

    D) \[1.93\times {{10}^{5}}C\]

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  • question_answer68) Cheilosis and digestive disorders are due to the deficiency of

    A) ascorbic acid

    B) pyridoxine

    C) thiamine

    D) riboflavin.

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  • question_answer69) One of the following amides will not undergo Hoffmann bromamide reaction:

    A) \[C{{H}_{3}}CONHC{{H}_{3}}\]

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

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

    D) \[{{C}_{6}}{{H}_{5}}CON{{H}_{2}}\]

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  • question_answer70) lodoform can be prepared from all, except

    A) butan-2-one

    B) acetophenone

    C) propan-2-ol

    D) propan-1-ol.

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  • question_answer71) The arrangement of following compounds :

    (i) bromomethane
    (ii) bromoform
    (iii) chloromethane
    (iv) dibromomethane
    In the increasing order of their boiling point is

    A) \[iv<iii<i<ii\]

    B) \[i<ii<iii<iv\]

    C) \[iii<i<iv<ii\]

    D) \[ii<iii<i<iv\]

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  • question_answer72) The complex ion having minimum magnitude of \[{{\Delta }_{\upsilon }}(CFSE)\] is

    A) \[{{[Co{{(N{{H}_{3}})}_{6}}]}^{3+}}\]

    B) \[{{[Cr{{({{H}_{2}}O)}_{6}}]}^{3+}}\]

    C) \[{{[Cr{{(CN)}_{6}}]}^{3-}}\]

    D) \[{{[CoC{{l}_{6}}]}^{3-}}\]

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  • question_answer73) Which of the following colloids cannot be easily coagulated?

    A) Multimolecular colloids

    B) Irreversible colloids

    C) Lyophobic colloids

    D) Macromolecular colloids

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  • question_answer74) After adding non-volatile solute freezing point of water decreases to\[-{{0.186}^{o}}C\]. Calculate \[\Delta {{T}_{b}}\], if \[{{K}_{f}}\text{=}1.86\text{ }K\text{ }kg\text{ }mo{{l}^{-1}}\]and \[{{K}_{f}}\text{=}1.86\text{ }K\text{ }kg\text{ }mo{{l}^{-1}}\]

    A) \[0.0521K\]

    B) \[0.0186K\]

    C) \[0.521K\]

    D) \[1.86K\]

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  • question_answer75) Which of the following compounds of xenon has pyramidal geometry?

    A) \[Xe{{F}_{2}}\]

    B) \[Xe{{F}_{4}}\]

    C) \[XeO{{F}_{4}}\]

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

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  • question_answer76) Cryolite is

    A) \[N{{a}_{3}}Al{{F}_{6}}\]and is used in the electrolysis of alumina for lowering the melting point of alumina only

    B) \[N{{a}_{3}}Al{{F}_{6}}\] and is used in the electrolytic refining of alumina

    C) \[N{{a}_{3}}Al{{F}_{6}}\] and is used in the electrolysis of alumina for decreasing electrical conductivity

    D) \[N{{a}_{3}}Al{{F}_{6}}\] and is used in the electrolysis of alumina for lowering the melting point and increasing the conductivity of alumina.

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  • question_answer77) Identify Q in the following sequence of reactions:

    A)

    B)

    C)

    D)

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  • question_answer78) What amount of dioxygen (in gram) contains \[1.8\times {{10}^{22}}\]molecules?

    A) \[0.960\]

    B) \[96.0\]

    C) \[0.0960\]

    D) \[9.60\]

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  • question_answer79) The pair of compound which cannot exist together in solution is

    A) \[NaHC{{O}_{3}}\]and \[{{H}_{2}}O\]

    B) \[N{{a}_{2}}C{{O}_{3}}\]and \[NaOH\]

    C) \[NHC{{O}_{3}}\]and \[NaOH\]

    D) \[NaHC{{O}_{3}}\]and \[N{{a}_{2}}C{{O}_{3}}\]

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  • question_answer80) Plot of Maxwells distribution of velocities is given below: Which of the following is correct about this plot?

    A) \[{{f}_{1}}>{{f}_{2}}\]

    B) \[{{V}_{1}}<{{V}_{2}}\]

    C) \[{{T}_{1}}<{{T}_{2}}\]

    D) \[{{T}_{1}}>{{T}_{2}}\]

    View Answer play_arrow
  • question_answer81) Arrange the following compounds in the increasing order of their acidic strength: (i) m-Nitrophenol (ii) m-Cresol (iii) Phenol (iv) m-Chlorophenol

    A) \[ii<iv<iii<i\]

    B) \[ii<iii<i<iv\]

    C) \[iii<ii<i<iv\]

    D) \[ii<iii<iv<i\]

    View Answer play_arrow
  • question_answer82) . In the reaction: \[S+\frac{3}{2}{{O}_{2}}\xrightarrow{{}}S{{O}_{3}}+2x\,kJ\] and \[S{{O}_{2}}+\frac{1}{2}{{O}_{2}}\xrightarrow{{}}S{{O}_{3}}+y\,kJ\]heat of formation of \[S{{O}_{2}}\] is

    A) \[x-y\]

    B) \[2x+y\]

    C) \[x+y\]

    D) \[2x-y\]

    E) None of the Above

    View Answer play_arrow
  • question_answer83) Which of the following is not true?

    A) Ampicillin is not a natural antibiotic.

    B) Vancomycin is a broad spectrum antibiotic.

    C) Erythromycin is a bacteriostatic antibiotic.

    D) Prontosil is not converted into sulphanilamide in the body.

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  • question_answer84) Using MOT, compare \[O_{2}^{+}\] and \[O_{2}^{-}\] species and choose the incorrect option.

    A) \[O_{2}^{-}\]is less stable.

    B) Both \[O_{2}^{+}\]and \[O_{2}^{-}\] are paramagnetic.

    C) \[O_{2}^{+}\] have higher bond order than\[O_{2}^{-}\] .

    D) \[O_{2}^{+}\] is diamagnetic while \[O_{2}^{-}\] is paramagnetic.

    View Answer play_arrow
  • question_answer85) Which of the following compounds possesses the \[C-H\] bond with the lowest bond dissociation energy?

    A) Benzene

    B) 2,2-Dimethylpropane

    C) Toluene

    D) n-Pentane

    View Answer play_arrow
  • question_answer86) The correct statement is

    A) \[B{{I}_{3}}\] is the weakest Lewis acid among the boron halides

    B) there is minimum \[p\pi -p\pi \] back bonding in \[B{{F}_{3}}\]

    C) \[B{{F}_{3}}\] is the strongest Lewis acid among the other boron halides

    D) there is maximum \[p\pi -p\pi \] back bonding in \[B{{F}_{3}}\].

    View Answer play_arrow
  • question_answer87) Acetic acid is treated with \[Ca{{(OH)}_{2}}\]and the product so obtained is subjected to dry distillation. The final product is

    A) propanal

    B) ethanol

    C) ethanal

    D) propanone.

    View Answer play_arrow
  • question_answer88) In the sequence of following reactions: The starting compound P is

    A) m-nitro toluene

    B) p-nitro toluene

    C) p-nitro toluene

    D) o-bromotoluene.

    View Answer play_arrow
  • question_answer89) An alkali metal hydride \[(NaH)\] reacts with diborane in A to give a tetrahedral compound B which is extensively used as reducing agent in organic synthesis. The compound A and B respectively are

    A) \[C{{H}_{3}}COC{{H}_{3}}\]and \[{{B}_{3}}{{N}_{3}}{{H}_{6}}\]

    B) \[{{({{C}_{2}}{{H}_{5}})}_{2}}O\] and \[NaB{{H}_{4}}\]

    C) \[{{C}_{2}}{{H}_{6}}\]and \[{{C}_{2}}{{H}_{5}}Na\]

    D) \[{{C}_{6}}{{H}_{6}}\]and \[NaB{{H}_{4}}\]

    View Answer play_arrow
  • question_answer90) Water softening by Clarks process uses

    A) \[NaHC{{O}_{3}}\]

    B) \[Ca{{(OH)}_{2}}\]

    C) \[Ca{{(HC{{O}_{3}})}_{2}}\]

    D) \[N{{a}_{2}}C{{O}_{3}}\]

    View Answer play_arrow
  • question_answer91) One of the following conversion results in the change of hybridization and geometry.

    A) \[N{{H}_{3}}\]to \[NH_{4}^{+}\]

    B) \[{{H}_{2}}O\]to \[{{H}_{3}}{{O}^{+}}\]

    C) \[C{{H}_{4}}\]to\[{{C}_{2}}{{H}_{6}}~\]

    D) \[B{{F}_{3}}\]to \[BF_{4}^{-}\]

    View Answer play_arrow
  • question_answer92) In presence of \[HCl\], \[{{H}_{2}}S\] results the precipitation of group-2 elements but not group-4 elements during qualitative analysis. It is due to

    A) higher concentration of \[{{H}^{+}}\]

    B) lower concentration of \[{{H}^{+}}\]

    C) higher concentration of \[{{S}^{2-}}\]

    D) lower concentration of \[{{S}^{2-}}\].

    View Answer play_arrow
  • question_answer93) The two electrons have the following sets of quantum numbers: \[P=3,2,-2,+\frac{1}{2},\,\,Q=3,\,0,\,0,+\frac{1}{2}\] Which of the following statements is true?

    A) P has greater energy than Q.

    B) P and Q represent same electron.

    C) P and Q have same energy.

    D) P has lesser energy than Q.

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  • question_answer94) Orion has monomeric unit

    A) glycol

    B) isoprene

    C) acrolein

    D) vinyl cyanide.

    View Answer play_arrow
  • question_answer95) Adenosine is an example of

    A) purine base

    B) nucleoside

    C) nucleotide

    D) pyrimidine base.

    View Answer play_arrow
  • question_answer96) While charging the lead storage battery

    A) \[PbS{{O}_{4}}\]on cathode is reduced to \[Pb\]

    B) \[PbS{{O}_{4}}\] on anode is oxidized to \[Pb{{O}_{2}}\]

    C) \[PbS{{O}_{4}}\] on anode is reduced to \[Pb\]

    D) \[PbS{{O}_{4}}\] on cathode is oxidized to \[Pb\].

    View Answer play_arrow
  • question_answer97) The unit cell with crystallographic dimensions, \[a\ne b\ne c,\] \[\alpha =\gamma ={{90}^{o}}\] and \[\beta \ne {{90}^{o}}\] is

    A) monoclinic

    B) tetragonal

    C) triclinic

    D) orthorhombic.

    View Answer play_arrow
  • question_answer98) Sodium metal crystallizes in bcc lattice with edge length of\[4.29\overset{\text{o}}{\mathop{\text{A}}}\,\]. The radius of sodium atom is

    A) \[1.601\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[1.857\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[2.857\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[2.145\overset{\text{o}}{\mathop{\text{A}}}\,\]

    View Answer play_arrow
  • question_answer99) On heating with concentrated \[NaOH\] solution in an inert atmosphere of \[C{{O}_{2}}\], white phosphorus gives a gas. Which of the following statements is incorrect about the gas?

    A) It is more basic than \[N{{H}_{3}}\]

    B) Its solution in water decomposes in the presence of light.

    C) It is less basic than \[N{{H}_{3}}\].

    D) It is highly poisonous and has smell like rotten fish.

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  • question_answer100) In the given set of reactions: 2-Bromopropane \[\xrightarrow[heat]{alc.\,\,AgCN}X\xrightarrow{LiAl{{H}_{4}}}Y\] The IUPAC name of product Y is

    A) N-isopropylmethanamine

    B) N-methylpropan-2-amine

    C) N-methylpropanamine

    D) butan-2-amine.

    View Answer play_arrow
  • question_answer101) \[{{H}_{2}}{{O}_{2}}\] cannot oxidise

    A) \[N{{a}_{2}}S{{O}_{3}}\]

    B) \[KI\]

    C) \[PbS\]

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

    View Answer play_arrow
  • question_answer102) Which of the following will be able to show geometrical isomerism?

    A) \[M{{A}_{2}}{{B}_{2}}\]-Tetrahedral

    B) \[MABCD\]-Tetrahedral

    C) \[M{{A}_{3}}B\]-Square planar

    D) \[MABCD\]-Square planar

    View Answer play_arrow
  • question_answer103) Copper is extracted from copper pyrites by heating in a Bessemer converter. The method is based on the principle that

    A) iron has less affinity for oxygen than sulphur at high temperature

    B) sulphur has less affinity for oxygen at high temperature

    C) copper has more affinity for oxygen than sulphur at high temperature

    D) copper has less affinity for oxygen than sulphur at high temperature.

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  • question_answer104) The electrolyte having maximum flocculation value for \[AgI/A{{g}^{+}}\] sol is

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

    B) \[N{{a}_{3}}P{{O}_{4}}\]

    C) \[NaCl\]

    D) \[N{{a}_{2}}S{{O}_{4}}\]

    View Answer play_arrow
  • question_answer105) In a first order reaction, the concentration of the reactant is reduced to 12.5% in one hour. When was it half completed?

    A) \[20min\]

    B) \[15min\]

    C) \[3hr\]

    D) \[30min\]

    View Answer play_arrow
  • question_answer106) 0.06% (w/v) aqueous solution of urea is isotonic with

    A) 0.6% glucose solution

    B) 0.1 M glucose solution

    C) 0.06% glucose solution

    D) 0.01 M glucose solution.

    View Answer play_arrow
  • question_answer107) In \[{{H}_{2}}-{{O}_{2}}\] fuel cell the reaction occurring at cathode is

    A) \[{{O}_{2(g)}}+2{{H}_{2}}{{O}_{(l)}}+4{{e}^{-}}\xrightarrow{{}}4OH_{(aq)}^{-}\]

    B) \[H_{(aq)}^{+}+OH_{(aq)}^{-}\xrightarrow{{}}{{H}_{2}}{{O}_{(l)}}\]

    C) \[2{{H}_{2(g)}}+{{O}_{2(g)}}\xrightarrow{{}}2{{H}_{2}}{{O}_{(l)}}\]

    D) \[{{H}^{+}}+{{e}^{-}}\xrightarrow{{}}\frac{1}{2}{{H}_{2}}\]

    View Answer play_arrow
  • question_answer108) The distinguishing test between methanoic acid and ethanoic acid is

    A) Tollenst -

    B) sodium bicarbonate test

    C) litmus test

    D) esterification test.

    View Answer play_arrow
  • question_answer109) The hydrolysis of optically active 2-bromobutane with aqueous \[NaOH\] results in the formation of

    A) \[(-)-butan-2-ol\]

    B) \[(\pm )-butan-2-ol\]

    C) \[(+)-butan-2-ol\]

    D) \[(\pm )-butan-1-ol\]

    View Answer play_arrow
  • question_answer110) \[MS{{O}_{4}}\xrightarrow{N{{H}_{4}}OH}\underset{white}{\mathop{X\downarrow }}\,\xrightarrow[Excess]{N{{H}_{4}}OH}Y\xrightarrow{{{H}_{2}}S}Z\downarrow \]Here M and Z are

    A) \[Zn,ZnS\]

    B) \[Al,A{{l}_{2}}{{S}_{3}}\]

    C) \[Cu,ZnS\]

    D) \[Fe,FeS\]

    View Answer play_arrow
  • question_answer111) The electronic configuration of \[G{{d}^{2+}}\] is (at. no. of Gd is 64)

    A) \[[Xe]4{{f}^{7}}\]

    B) \[[Xe]\,4{{f}^{7}}\,5{{d}^{1}}\]

    C) \[[Xe]\,4{{f}^{8}}\]

    D) \[[Xe]\,4{{f}^{7}}\,\,5{{d}^{1}}\,\,6{{s}^{2}}\]

    View Answer play_arrow
  • question_answer112) Number of possible alkynes with formula \[{{C}_{5}}{{H}_{8}}\]is

    A) \[3\]

    B) \[5\]

    C) \[2\]

    D) \[4\]

    View Answer play_arrow
  • question_answer113) Glycogen is

    A) a structural polysaccharide

    B) structurally similar to amytopectin but extensively branched

    C) a polymer of \[\beta \]-D-glucose units

    D) structurally very much similar to amylopectin.

    View Answer play_arrow
  • question_answer114) How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water?

    A) \[5\]

    B) \[10\]

    C) \[4\]

    D) \[6\]

    View Answer play_arrow
  • question_answer115) Which of the following curves is in accordance with Freundlich adsorption isotherm?

    A)

    B)

    C)

    D)

    View Answer play_arrow
  • question_answer116) The product B is

    A)

    B)

    C)

    D)

    View Answer play_arrow
  • question_answer117) On heating potassium permanganate, one of the following compound is not obtained

    A) \[MnO\]

    B) \[{{K}_{2}}Mn{{O}_{4}}\]

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

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

    View Answer play_arrow
  • question_answer118) The salt which responds to dilute and concentrated \[{{H}_{2}}S{{O}_{4}}\] is

    A) \[Ba{{(N{{O}_{3}})}_{2}}\]

    B) \[N{{a}_{3}}P{{O}_{4}}\]

    C) \[Ca{{F}_{2}}\]

    D) \[N{{a}_{2}}S{{O}_{4}}\]

    View Answer play_arrow
  • question_answer119) Half-life period of a first order reaction is 10 min. Starting with initial concentration 12 M, the rate after 20 min is:

    A) \[0.693\times 3M\text{ }mi{{n}^{-1}}\]

    B) \[0.0693\times 4M\text{ }mi{{n}^{-1}}\]

    C) \[0.0693M\text{ }mi{{n}^{-1}}\]

    D) \[0.0693\times 3M\text{ }mi{{n}^{-1}}\]

    View Answer play_arrow
  • question_answer120) Which of the following aqueous solutions has the highest freezing point?

    A) \[0.01M\text{ }NaCl\]

    B) \[0.01M\text{ }N{{a}_{2}}S{{O}_{4}}\]

    C) \[0.1M\]Sucrose

    D) \[0.1M\text{ }NaCl\]

    View Answer play_arrow
  • question_answer121) Which of the following sentences is correct?

    A) In prokaryotes there are no membrane bound cell organelles.

    B) Cells of all living organisms have a nucleus.

    C) Cells are formed dc novo from abiotic materials.

    D) Both animal and plant cells have a well-defined cell wall.

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  • question_answer122) The element responsible for the ring structure of chlorophyll and maintenance of ribosome structure is

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

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

    C) \[S\]

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

    View Answer play_arrow
  • question_answer123) One hormone hastens maturity period in juvenile conifers, a second hormone controls xylem differentiation, while the third increases the tolerance of plants to various stresses. They are respectively

    A) Gibberellin, Auxin, Cytokinin

    B) Auxin, Gibberellin, Cytokinin

    C) Gibberellin, Auxin, ABA

    D) Auxin, Gibberellin, ABA.

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  • question_answer124) Which of the following is not an ex-situ conservation? .

    A) Cryopreservation

    B) Seed bank

    C) Biosphere reserves

    D) Botanical garden

    View Answer play_arrow
  • question_answer125) If 30J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain? \[Plant\to Mice\to Snake\text{ }\to Peacock\]

    A) \[0.3J\]

    B) \[0.03J\]

    C) \[0.0003J\]

    D) \[0.003J\]

    View Answer play_arrow
  • question_answer126) With respect to phenylketonuria identify which statement is not correct.

    A) It is a case of aneuploidy.

    B) It is an example of pleiotropy.

    C) Caused due to autosomal recessive trait.

    D) It is an error in metabolism.

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  • question_answer127) In a human foetus the limbs and digits develop after

    A) 12 weeks

    B) first trimester

    C) 5th month

    D) 8 weeks.

    View Answer play_arrow
  • question_answer128) The 2000 year old seed excavated from King Herods palace at dead sea belong to

    A) Dendrocalamus strictus

    B) Lupine articus

    C) Phoenix dactylifera

    D) Strobilanthus kunthiana.

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  • question_answer129) Label the correct part of the Myosin monomer.

    A)

    [A] Actin binding site
    [B] Head
    [C] ATP binding site
    [D] Cross arm

    B)

    [A] Cross arm
    [B] Actin binding site
    [C] Head
    [D] ATP binding site

    C)

    [A] ATP binding site
    [B] Actin binding site
    [C] Head
    [D] Cross arm

    D)

    [A] Head
    [B] Cross arm
    [C] Actin binding site
    [D] ATP binding site

    View Answer play_arrow
  • question_answer130) Greenhouse crops such as tomatoes and bell pepper produce higher yields. This is due to

    A) \[C{{O}_{2}}\] enriched atmosphere leads to higher yields

    B) \[C{{O}_{2}}\] is a limiting factor to photosynthesis

    C) diffused light in green house

    D) tomatoes and bell pepper are not \[{{C}_{3}}\] plants.

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  • question_answer131) The organisms which completely lack a cell wall and can live without oxygen are

    A) mycoplasmas

    B) archaebacteria

    C) methanogens

    D) thermoacidophiles.

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  • question_answer132) RNA polymerase-I transcribes eukaryotic ribosome which does not consist of

    A) \[5.8S\text{ }rRNA\]

    B) \[28S\text{ }rRNA\]

    C) \[18S\text{ }rRNA\]

    D) \[5S\text{ }rRNA\].

    View Answer play_arrow
  • question_answer133) Match the following.

    [A] VNTR p. Largest gene
    [B] Introns and Exons q. DNA fingerprinting
    [C] Dystrophin r. Bulk DNA
    [D] Satellite DNA s. Splicing

    A) \[\text{(A)}-r,(B)-\text{ }s,(C)-\text{ }p,(D)-\text{ }q\]

    B) \[\text{(A)}-q,(B)-\text{ }s,(C)-\text{ }p,(D)-r\]

    C) \[\text{(A)}-q,(B)-p,(C)-\text{s},(D)-r\]

    D) \[\text{(A)}-s,(B)-p,(C)-q,(D)-r\]

    View Answer play_arrow
  • question_answer134) Smack and Crack are produced from

    A) Cannabis saliva and Papaver somniferum

    B) Cannabis saliva and Atropa belladonna

    C) Erythroxylon coca and Atropa belladonna

    D) Papaver somniferum and Erythroxylon coca.

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  • question_answer135) Double lines in pedigree analysis show

    A) unaffected offspring

    B) sex unspecified

    C) normal mating

    D) consanguineous marriage.

    View Answer play_arrow
  • question_answer136) Progestasert is an IUD which makes the uterus unsuitable and cervix hostile to the sperms as they are

    A) hormone releasing lUDs

    B) copper releasing lUDs

    C) ideal contraceptive

    D) non-medicated lUDs.

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  • question_answer137) The chromosome number in meiocyte is 34. Therganism could be

    A) Ophioglossum

    B) dog

    C) onion

    D) apple.

    View Answer play_arrow
  • question_answer138) A fall in glomerular filtration rate activates

    A) adrenal medulla to release adrenaline

    B) juxtaglomerular cells to release renin

    C) posterior pituitary to release vasopressin

    D) adrenal cortex to release aldosterone.

    View Answer play_arrow
  • question_answer139) In a \[3.2Kbp\]long piece of DNA, 820 adenine bases were found. What would be the number of cytosine bases?

    A) \[780\]

    B) \[1560\]

    C) \[740\]

    D) \[1480\]

    View Answer play_arrow
  • question_answer140) Assisted Reproductive Technology does not include

    A) Zygote Extra Fallopian Transfer

    B) In vitro fertilisation and embryo transfer

    C) artificial insemination

    D) Gamete Intra Fallopian Transfer.

    View Answer play_arrow
  • question_answer141) During menstrual cycle, the cyclical changes take place in

    A) perimetrium

    B) endometrium

    C) corpus luteum

    D) myometrium.

    View Answer play_arrow
  • question_answer142) BOD refers to

    A) the oxygen required for bacteria to grow in 1 Litre of effluent.

    B) the amount of oxygen consumed if all the organic matter in 1000 mL of water were oxidised by bacteria

    C) the amount of oxygen released if all the organic matter in 1000 mL of water were oxidised by bacteria

    D) the amount of oxygen released when all the organic matter was consumed by bacteria in 1 litre of water

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  • question_answer143) Sonalika and Kalyan Sona are high yielding varieties of

    A) sugarcane

    B) rice

    C) wheat

    D) maize.

    View Answer play_arrow
  • question_answer144) According to Robert Constanza, 50% of the total cost for ecosystem services goes to

    A) nutrient cycling

    B) recreation

    C) soil formation

    D) climate regulation.

    View Answer play_arrow
  • question_answer145) Choose the correct statement.

    A) Oxygen is vital in respiration for removal of hydrogen.

    B) Pyruvate is formed in the mitochondrial matrix.

    C) There is complete breakdown of glucose in fermentation.

    D) During the conversion of succinyl CoA to succinic acid a molecule of ATP is synthesised.

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  • question_answer146) Given below is the representation of the extent of global diversity of vertebrates. What groups does the portions represent?

    A)

    A B C D E
    Birds Reptiles Fishes Mammals Amphibians

    B)

    A B C D E
    Mammals Birds Fishes Amphibians Reptiles

    C)

    A B C D E
    Fishes Amphibians Mammals Birds Reptiles

    D)

    A B C D E
    Fishes Mammals Birds Reptiles Amphibians

    View Answer play_arrow
  • question_answer147) Select the mismatch pair from the following.

    A) Oxytocin - Contraction of uterine muscles

    B) Insulin - Gluconeogenesis

    C) Prolactin - Milk production in mammary glands

    D) Glucagon - Glycogenolysis

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  • question_answer148) Which of the following would most likely help to slow down the greenhouse effect?

    A) Converting tropical forests into grazing land for cattle.

    B) Ensuring that all excess paper packaging is burned to ashes.

    C) Redesigning landfill dumps to allow methane to be collected.

    D) Promoting the use of-private rather than public transport.

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  • question_answer149) If an inheritable mutation is observed in a population at high frequency, it is referred to as 0risinal Question is incorrectly framed

    A) sequence annotation

    B) DNA polymorphism

    C) linkage

    D) expressed sequence tag.

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  • question_answer150) Find the wrongly matched pair.

    A)

    Lungs of the Amazon rainforest planet

    B)

    Endemism Species confined to one region and also found in other regions

    C)

    Hotspots Regions with species richness

    D)

    Alien species Glorias gariepinus

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  • question_answer151) The function of a selectable marker is

    A) eliminating transformants and permitting non-transformants

    B) identify ori site

    C) elimination of non-transformants and permitting transformants

    D) to destroy recognition sites.

    View Answer play_arrow
  • question_answer152) The T-wave in an ECG represents

    A) depolarisation of ventricles

    B) electrical excitation of atria

    C) beginning of systole

    D) return of the ventricles from excited state.

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  • question_answer153) In prokaryotes the glycocalyx when it is thick is called

    A) capsule

    B) slime layer

    C) cell wall

    D) mesosome.

    View Answer play_arrow
  • question_answer154) Which of the following is not correct in mass flow hypothesis?

    A) As hydrostatic pressure in the phloem sieve tube increases pressure flow stops and sap is accumulated in phloem.

    B) The sugar is moved bidirectionally.

    C) The sugar which is transported is sucrose.

    D) Loading of the phloem sets up a water potential gradient that facilitates the mass movement in the phloem.

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  • question_answer155) Identify this structure.

    A) Adenylic acid

    B) Uracil

    C) Cholesterol

    D) Adenosine

    View Answer play_arrow
  • question_answer156) In 125 amino acid sequence if the codon for 25th amino acid is mutated to UAA, then

    A) a polypeptide of 24 amino acids is formed

    B) a polypeptide of 124 amino acids is formed

    C) no polypeptides are formed

    D) a polypeptide of 25 amino acids is formed.

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  • question_answer157) Three copies of chromosome - 21 in a child with Downs syndrome have been analysed using molecular biology technology to detect any possible DNA polymorphism with reference to different alleles located on chromosome - 21. Results showed that out of 3 copies 2 of the chromosomes of the child contain the same alleles as one of the mother s alleles. Based on this when did the non-disjunction event most likely occur?

    A) Paternal meiosis-I

    B) Maternal meiosis-I

    C) Paternal meiosis-II

    D) Maternal meiosis-II

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  • question_answer158) Which of the following is not correct with respect to malaria?

    A) RBCs rupture and release haemozoin which causes chills.

    B) Sporozoites multiply in blood.

    C) Female Anopheles mosquito is the vector.

    D) Malignant malaria is caused by Plasmodium falciparum.

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  • question_answer159) Ernst Chain and Howard Floreys contribution was

    A) establishing the potential of penicillin as an effective antibiotic

    B) discovery of streptokinase

    C) production of genetically engineered insulin

    D) discovery of DNA sequence.

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  • question_answer160) Choose the correct combination of labelling the molecules involved in the pathway of anaerobic respiration in Yeast.

    A) A - Acetaldehyde, B -\[C{{O}_{2}}\] C - Ethanol

    B) A - Ethanol, B - \[C{{O}_{2}}\], C - Acetaldehyde

    C) A - Ethanol, B - Acetaldehyde, C - \[C{{O}_{2}}\]

    D) A - \[C{{O}_{2}}\], B - Ethanol, C - Acetaldehyde

    View Answer play_arrow
  • question_answer161) The breakdown of detritus into small particles by detritivores is called

    A) leaching

    B) humification

    C) fragmentation

    D) catabolism.

    View Answer play_arrow
  • question_answer162) The formation of two species from one ancestral species is known as

    A) convergent evolution

    B) phyletic evolution

    C) allopatry

    D) divergent evolution.

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  • question_answer163) A scrubber in the exhaust of a chemical industrial plant removes

    A) gases like ozone or methane

    B) gases like sulphur dioxide

    C) gases like nitrous oxide

    D) particulate matter of the size 5 micrometers or above.

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  • question_answer164) With respect to DNA fragmentation Statement A: Gel electrophoresis and elution are two important processes. Statement B: After staining with ethidium bromide it has to be exposed to U.V. light.

    A) Only A is correct.

    B) Both A and B are correct statements.

    C) Only B is correct.

    D) Only A is correct and B is not correct.

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  • question_answer165) The pioneer species in xerarch and hydrarch succession are respectively

    A) lichens and phytoplanktons

    B) lichens and sedges

    C) phytoplanktons and lichens

    D) lichens and rooted hydrophytes.

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  • question_answer166) Hibernating animals have tissues containing mitochondria with a membrane protein that accelerates electron transport while blocking the synthesis of ATR What is the consequence of this?

    A) Hibernating animals can synthesise fat instead of wasting energy of respiration,

    B) Energy is saved because glycolysis and the citric acid cycle shuts down.

    C) Pyruvate is converted to lactic acid by anaerobic fermentation.

    D) The energy of respiration is converted into heat.

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  • question_answer167) Which of the following conditions correctly describes the manner of determining the sex in the given example?

    A) Homozygous sex chromosome XX produces male in Drosophila.

    B) XO type of sex determines male sex in grasshopper.

    C) Homozygous sex chromosome ZZ determines female sex in birds.

    D) XO condition in humans as found in Klinefelters syndrome determines female sex.

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  • question_answer168) Natural killer lymphocytes are an example for

    A) physical barrier

    B) cytokine barrier

    C) cellular barrier

    D) physiological barrier.

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  • question_answer169) The codon AUG has dual function. It is an initiation codon and also codes for

    A) phenylalanine

    B) formaldehyde

    C) serine

    D) methionine.

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  • question_answer170) Identify the wrong statement.

    A) Alleles b and c also produce sugar.

    B) Alleles \[{{I}^{A}}\] and \[{{I}^{B}}\] produce sugars.

    C) When \[{{I}^{B}}\] and b or i are present only \[{{I}^{B}}\] is expressed.

    D) Both \[{{I}^{A}}\] and \[{{I}^{B}}\] are present together and they express because of co-dominance.

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  • question_answer171) Continued self-pollination results in

    A) formation of unisexual flowers

    B) inbreeding depression

    C) gametes loose vigour

    D) self incompatibility.

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  • question_answer172) Which vector can clone a small fragment of DNA?

    A) Plasmid

    B) Bacterial artificial chromosome

    C) Cosmid

    D) Yeast artificial chromosome

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  • question_answer173) Seeds without fertilisation are obtained from

    A) polyembryony

    B) parthenocarpy

    C) dormancy

    D) apomixis.

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  • question_answer174) With respect to Eichhornia: Statement X: It drains offoxvgen from water and is seen growing in standing water. Statement Y: It is an indigenous species of our country.

    A) Only statement X is correct and Y is wrong.

    B) Both statements X and Y are correct.

    C) Only statement Y is correct and X is wrong.

    D) Both statements X and Y are wrong.

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  • question_answer175) Identify the Phylum X.

    A) Hemichordata

    B) Aschelminthes

    C) Platyhelminthes

    D) Ctenophora

    E) None of the Above

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  • question_answer176) During sewage treatment biogas produced includes

    A) hydrogen sulphide, nitrogen, methane

    B) methane, oxygen, hydrogen sulphide

    C) methane, hydrogen sulphide, carbon dioxide

    D) hydrogen sulphide, methane, sulphur oxide.

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  • question_answer177) The ancestors of modern day frogs and salamanders are

    A) Icthyophis

    B) jawless fish

    C) Amphioxus

    D) Coelacanth.

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  • question_answer178) Hisardale is obtained by crossing

    A) horse with donkey

    B) Merino ewes with Bikaneri rams

    C) superior bull with superior cow

    D) Bikaneri ewes with Merino rams.

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  • question_answer179) The nitrogen base found only in DNA is also called

    A) uracil

    B) 5-methyl uracil

    C) guanine

    D) \[N{{H}_{4}}Cl\]

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  • question_answer180) The hormone which acts on Sertoli cells and stimulates the process of spermiogenesis is

    A) GnRH

    B) androgen

    C) FSH

    D) LH.

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