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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

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  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

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  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

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  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).

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  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.

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  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

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