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  1. A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be __________ c.c.

  2. A.

     2.73

    B.

     28.3

    C.

     273

    D.

     283


  3. __________ explains the equilibrium constant for any chemical reaction.

  4. A.

     Henry's law

    B.

     Law of mass action

    C.

     Hess's law

    D.

     None of these


  5. The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature)

  6. A.

     √(2KT/m)

    B.

     √(3KT/m)

    C.

     √(6KT/m)

    D.

     3KT/m


  7. The number of degrees of freedom for an azeotropic mixture in a two component vapour-liquid equilibria is/are

  8. A.

     Zero

    B.

     One

    C.

     Two

    D.

     Three


  9. Compressibility factor for almost all the gases are approximately same at the same

  10. A.

     Pressure and temperature

    B.

     Reduced pressure and reduced temperature

    C.

     Critical pressure and critical temperature

    D.

     None of these


  11. At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

  12. A.

     More

    B.

     Less

    C.

     Same

    D.

     More or less ; depending on the system


  13. __________ law of thermodynamics ascertains the direction of a particular spontaneous process.

  14. A.

     Zeroth

    B.

     First

    C.

     Second

    D.

     Third


  15. Grams of butane (C₄H₁₀) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be

  16. A.

     580

    B.

     640

    C.

     1160

    D.

     Data insufficient; can't be computed


  17. The adiabatic throttling process of a perfect gas is one of constant enthalpy

  18. A.

     In which there is a temperature drop

    B.

     Which is exemplified by a non-steady flow expansion

    C.

     Which can be performed in a pipe with a constriction

    D.

     In which there is an increase in temperature


  19. Number of phases in a colloidal system are

  20. A.

     1

    B.

     2

    C.

     3

    D.

     4