Chemical Engineering - Stoichiometry

26. 

Pick out the wrong statement.

A. The effect of pressure on heat capacity of gases at pressure above one atmosphere and above the critical temperature is negligible.
B. The value of Cp of gases increases with increase in pressure, above atmospheric pressure.
C. The value of Cp at critical temperature and pressure reaches infinity.
D. all (a), (b), and (c).

Answer: Option A

Explanation:

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27. 

In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the

A. solute concentration
B. temperature
C. both(a) & (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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28. 

Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the

A. same elevation in boiling point.
B. different elevation in boiling point.
C. elevation in boiling point in the ratio of their molecular weights.
D. none of these.

Answer: Option A

Explanation:

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29. 

N2 content in a urea sample was found to be only 42%. What is the actual urea content of the sample ? (molecular weight of urea = 60)

A. 80%
B. 90%
C. 95%
D. 98%

Answer: Option B

Explanation:

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30. 

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

A. °API = 200(G - 1)
B. °API = (141.5/G) - 131.5
C. °API = (140/G) - 130
D. °API = 145 - (145/G)

Answer: Option B

Explanation:

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