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Chemical Engineering :: Stoichiometry

  1. Enthalpy of a vapor gas mixture may be increased by increasing the

  2. A.

     Temperature at constant humidity

    B.

     Humidity at constant temperature

    C.

     Temperature and the humidity

    D.

     All of the above


  3. In osmosis through a semi-permeable membrane, diffusion of the

  4. A.

     Solvent is from low concentration to high concentration region

    B.

     Solvent is from high concentration to low concentration region

    C.

     Solute takes place

    D.

     None of these


  5. Isotonic solutions must have the same

  6. A.

     Viscosity

    B.

     Molar concentration

    C.

     Normality

    D.

     Critical temperature


  7. The unit of Cp in S.I. units is

  8. A.

     W/m².°K

    B.

     J/kg.°K

    C.

     W/m.°K

    D.

     J/m³. °K


  9. The rate of material __________ is zero in case of a steady state system.

  10. A.

     Accumulation

    B.

     Production

    C.

     Input

    D.

     Generation


  11. Volume percent for gases is equal to the

  12. A.

     Weight percent

    B.

     Mole percent

    C.

     Weight percent only for ideal gases

    D.

     Mole percent only for ideal gases


  13. Kopp's rule is concerned with the calculation of

  14. A.

     Thermal conductivity

    B.

     Heat capacity

    C.

     Viscosity

    D.

     Surface tension


  15. Pick out the wrong statement.

  16. A.

     Ten times dilution of a normal solution (N) reduces its normality to N/10

    B.

     When equal weights of oxygen and methane are mixed in an empty reactor at room temperature, then the fraction of total pressure exerted by the oxygen is 1/2

    C.

     Volume occupied by 9.034 x 1023 atoms of oxygen in ozone (O₃) at NTP will be 11200 c.c

    D.

     One kg mole of an ideal gas at N.T.P occupies 22400 Nm³


  17. Pick out the correct conversion.

  18. A.

     1 BTU =453.6 calories

    B.

     1 BTU = 252 calories

    C.

     1 calorie = 252 BTU

    D.

     1 calorie = 453.6 BTU


  19. A reduction process is accompanied with increase in the

  20. A.

     Number of electrons

    B.

     Oxidation number

    C.

     Both A & B

    D.

     Neither A nor B