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Chemical Engineering :: Stoichiometry

  1. Two solutions A₁ and A₂ have pH value of 2 and 6 respectively. It implies that the solution

  2. A.

     A₁ is more alkaline than solution A₂

    B.

     A₁ is highly acidic

    C.

     A₁ is very slightly acidic

    D.

     Both A & C


  3. A 'limiting reactant' is the one, which decides the __________ in the chemical reacation.

  4. A.

     Equilibrium constant

    B.

     Conversion

    C.

     Rate constant

    D.

     None of these


  5. The heat of vaporisation __________ with increase in pressure.

  6. A.

     Increases

    B.

     Decreases

    C.

     Becomes zero at critical pressure

    D.

     Both B and C


  7. Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.

  8. A.

     No change

    B.

     Doubling

    C.

     L/4th reduction

    D.

     Four fold increase


  9. The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.

  10. A.

     Less than

    B.

     More than

    C.

     Equal to

    D.

     Either more or less; depends on the solvent


  11. CaCO₃ contains __________ percent of Ca by weight.

  12. A.

     40

    B.

     48

    C.

     96

    D.

     12


  13. Percentage saturation of a vapor bearing gas is always __________ the relative saturation.

  14. A.

     Higher than

    B.

     Smaller than

    C.

     Equal to

    D.

     Either A or B; depends on the system


  15. Cp equals Cv at

  16. A.

     0°C

    B.

     0°K

    C.

     0°F

    D.

     0°R


  17. Cp/Cv for monoatomic gases is

  18. A.

     1.44

    B.

     1.66

    C.

     1.99

    D.

     1


  19. Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).

  20. A.

     °API = 200(G - 1)

    B.

     °API = (141.5/G) - 131.5

    C.

     °API = (140/G) - 130

    D.

     °API = 145 - (145/G)