Chemical Engineering - Stoichiometry

21. 

Which of the following is not a colligative property ?

A. Osmotic pressure
B. Depression of freezing point
C. Lowering of vapor pressure
D. none of these.

Answer: Option D

Explanation:

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22. 

Atoms of the same element, but of different masses are called

A. isobars
B. isotones
C. isotopes
D. none of these

Answer: Option C

Explanation:

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23. 

If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times.

A. 10
B. 100
C. 1000
D. 10000

Answer: Option C

Explanation:

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24. 

Kopp's rule is concerned with the calculation of

A. thermal conductivity.
B. heat capacity.
C. viscosity.
D. surface tension.

Answer: Option B

Explanation:

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25. 

Density of carbon dioxide is __________ kg/Nm3.

A. 44/22400
B. 44/22.4
C. 22.4/44
D. none of these

Answer: Option B

Explanation:

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