Thermal Physics - One Mark Questions

10th Standard EM

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Science

Time : 00:30:00 Hrs
Total Marks : 20
    7 x 1 = 7
  1. The value of universal gas constant

    (a)

    3.81 mol–1 K–1

    (b)

    8.03 mol–1 K–1

    (c)

    1.38 mol–1 K–1

    (d)

    8.31 mol–1 K–1

  2. Which of the following has the fastest process of heat transfer?

    (a)

    Conduction

    (b)

    convection

    (c)

    Radiation

    (d)

    all the above

  3. At what temperature are Celsius and Fahrenheit equal

    (a)

    40°

    (b)

    -40°

    (c)

    00

    (d)

    100°

  4. In which process heat is transferred directly from one molecule to other?

    (a)

    conduction

    (b)

    convection

    (c)

    Radiation

    (d)

    all the above

  5. Temperature is a property which determines

    (a)

    amount of heat a body contains

    (b)

    total absolute energy a body has

    (c)

    direction of flow of heat

    (d)

    thermal energy

  6. SI unit of temperature is

    (a)

    celsius

    (b)

    fahrenheit

    (c)

    kelvin

    (d)

    none

  7. SI unit of heat is

    (a)

    calorie

    (b)

    joule

    (c)

    kilo calorie

    (d)

    kelvin

  8. 8 x 1 = 8
  9. The value of Avogadro number ________

    ()

    6.023 x 1023 / mol (or) mol-1]

  10. The temperature and heat are _________ quantities

    ()

    Scalar

  11. One calorie is the amount of heat energy required to raise the temperature of _______ of water through______.

    ()

    1gm; 10C

  12. The average kinetic energy of the molecules of a substance is called ____

    ()

    Temperature

  13. The SI unit of temperature is ______

    ()

    kelvin

  14. Temperature is an indication of the _____ of molecules.

    ()

    average kinetic energy

  15. The relation between celsius to kelvin

    ()

    K = C+ 273

  16. If there is flow of thermal energy between the systems, then they are in ______

    ()

    thermal equilibrium

  17. 5 x 1 = 5
  18. Heat is taken out of the body

  19. (1)

    Positive

  20. Heat is given to a body

  21. (2)

    Nature of mass of the substance

  22. Heat energy

  23. (3)

    Negative

  24. Rise in temperature

  25. (4)

    joule

  26. Boyle's law

  27. (5)

    PV = constant

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