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Chemical Engineering :: Stoichiometry

  1. For estimation of heat capacity of a solid compound, one can use

  2. A.
    Clayperon's equation
    B.
    Gibb's equation
    C.
    Kopp's rule
    D.
    Trouton's rule

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  3. With increase in the temperature of pure (distilled) water, its

  4. A.
    pOH decreases and pH increases.
    B.
    pOH and pH both 4ecreases.
    C.
    pH and pOH both increases.
    D.
    pH decreases and pOH increases.

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  5. Validity of the relationship, inputs = outputs, holds good for the system at steady state

  6. A.
    with chemical reaction.
    B.
    without chemical reaction.
    C.
    without chemical reaction & losses.
    D.
    none of these.

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  7. Which of the following is not a unit of kinematic viscosity ?

  8. A.
    Poise
    B.
    Stoke
    C.
    cm2/second
    D.
    None of these

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  9. 1 torr is equal to __________ mm Hg column.

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

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  11. 1 BTU/ft3 is approximately equal to __________ kcal/m3.

  12. A.
    1
    B.
    9
    C.
    4
    D.
    252

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  13. At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be

  14. A.
    significantly less than 4.69 atm.
    B.
    nearly equal to 4.69 atm.
    C.
    significantly more than 4.69 atm.
    D.
    indeterminate due to lack of data

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  15. Pick out the wrong statement.

  16. A.
    Raoult's law holds good for the solubility of polar gases in non-polar liquids.
    B.
    Molecules with symmetrical arrangement (e.g., CH4 and CCl4) are non-polar.
    C.
    Most of the hydrocarbons are nonpolar.
    D.
    Generally, nonpolar compounds are chemically inactive, conduct electricity poorly and do not ionise.

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  17. Which of the following ratios defines the recycle ratio in a chemical process ?

  18. A.
    Gross feed stream/recycle feed stream
    B.
    Recycle stream/fresh feed stream
    C.
    Recycle stream/gross feed stream
    D.
    None of these

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  19. NaOH contains __________ percent oxygen.

  20. A.
    1
    B.
    10
    C.
    16
    D.
    40

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