MHT-CET Physics Batch 2022-24
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Questions and Answers

What type of questions are present in the MHT-CET batch section?

  • Open-ended questions
  • Multiple choice questions
  • Multiple correct answer type
  • Single correct answer type (correct)

    • What is the marking scheme for the MHT-CET batch section?

  • +2 for correct answer, -1 for incorrect
  • +4 for correct answer, -3 for incorrect
  • +3 for correct answer, -2 for incorrect
  • +1 for correct answer, 0 if not attempted and 0 in all other cases (correct)

    • What is the value of R in the problem of a spherical liquid drop?

  • Radius of the droplet (correct)
  • Surface tension of the droplet
  • Mass of the droplet
  • None of the above

    • In Bohr's atomic model, what do speed and time period of revolution of an electron in n = 3 level depend on?

    <p>Velocity and radius of the electron</p> Signup and view all the answers

    What is the required energy for launching a spaceship from the earth's surface into free space?

    <p>Given by the formula 2mgR</p> Signup and view all the answers

    What is the change in kinetic energy during the displacement of a body of mass 0.5 kg?

    <p>1.5J</p> Signup and view all the answers

    What is the speed of the wave given by the equation y = 2sin(0.05x - 0.1t)?

    <p>30 m/s</p> Signup and view all the answers

    What happens to the sharpness of fringes when white light is used instead of monochromatic light?

    <p>The sharpness of fringes will decrease as we move away from the central fringe.</p> Signup and view all the answers

    What is the amplitude of the SHM given by the equation x(t) = a cos(ωt)?

    <p>a</p> Signup and view all the answers

    What is the standard emf of a cell if the Gibbs free energy of a cell reaction is -21.20 kJ?

    <p>0.239V</p> Signup and view all the answers

    What is the graph obtained by plotting the activity of a radioactive sample against time?

    <p>Exponential curve</p> Signup and view all the answers

    What happens to the vapour pressure of a solution if the mole fraction of the solvent decreases?

    <p>It increases</p> Signup and view all the answers

    What is the ionisation constant, Ka of an acid HQ if the pH of a 0.1 molar solution of the acid is 3?

    <p>10^(-3)</p> Signup and view all the answers

    What is the voltage of the electric field given by the equation E = 10 V/m?

    <p>10 V-m</p> Signup and view all the answers

    What is a molal solution?

    <p>A solution that contains one mole of solute in 1000g of the solvent</p> Signup and view all the answers

    What is the current flowing through a resistor of resistance 10 Ω when a voltage of 30 V is applied across it?

    <p>3 A</p> Signup and view all the answers

    What is the order of reactivities of alkyl halides in an SN2 reaction?

    <p>RF &gt; RCl &gt; RBr &gt; RI</p> Signup and view all the answers

    What is the product of the reaction between benzaldehyde and ethanoic anhydride with KCN?

    <p>C6H5CHOHCN</p> Signup and view all the answers

    What is the product formed when phenol vapours are passed over hot Zn dust?

    <p>Benzene</p> Signup and view all the answers

    Which disaccharide is present in milk?

    <p>Lactose</p> Signup and view all the answers

    What is the correct order of reactivity of halogens with alkanes?

    <p>F2 &lt; Cl2 &lt; Br2 &lt; I2</p> Signup and view all the answers

    Which of the following can act as an initiator in polymerization?

    <p>Azo-iso-butyronitrile</p> Signup and view all the answers

    At what pH will Mg2+ ions start precipitating as Mg(OH)2 from a 0.001 M Mg2+ ion solution?

    <p>10</p> Signup and view all the answers

    What is the correct set of four quantum numbers for the valence electrons of a rubidium atom (Z = 37)?

    <p>5,0, 0, +</p> Signup and view all the answers

    What is the number of solutions of the equation?

    <p>3</p> Signup and view all the answers

    What is the condition for the pair of straight lines joining the origin to the common points of and to be perpendicular?

    <p>5</p> Signup and view all the answers

    If a, b, c are vectors such that, what is the relationship between them?

    Signup and view all the answers

    What is the equation of the circle passing through?

    <p>having the centre</p> Signup and view all the answers

    What are the direction cosines of the line drawn from to?

    Signup and view all the answers

    What is the maximum value of?

    <p>30</p> Signup and view all the answers

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