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Chemical Engineering :: Stoichiometry

  1. 1 Pascal (unit of pressure) is equal to __________ N/m2.

  2. A.
    10
    B.
    1
    C.
    0.1
    D.
    1000

  3. 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is

  4. A.
    1/2
    B.
    1/3
    C.
    1/4
    D.
    2/3

  5. A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is

  6. A.
    13728 J
    B.
    19206 J
    C.
    4576 J
    D.
    12712 J

  7. An oxidation process is accompanied by decrease in the

  8. A.
    number of electrons.
    B.
    oxidation number.
    C.
    number of ions.
    D.
    all (a), (b) & (c).

  9. Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at

  10. A.
    heat conservation.
    B.
    yield enhancement.
    C.
    product enrichment.
    D.
    none of these.

  11. Which of the following expressions defines the Baume gravity scale for liquids heavier than water ?

  12. A.
    (141.5/G) - 131.5
    B.
    145 - (145/G)
    C.
    200(G-1)
    D.
    (400/G) - 400