Stoichiometry MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Stoichiometry, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Stoichiometry MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Stoichiometry mcq questions that explore various aspects of Stoichiometry problems. Each MCQ is crafted to challenge your understanding of Stoichiometry principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Stoichiometry MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Stoichiometry. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Stoichiometry knowledge to the test? Let's get started with our carefully curated MCQs!

Stoichiometry MCQs | Page 6 of 42

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Q51.
The weight fraction of methanol in an aqueous solution is 0.64. The mole fraction of methanol Xᴍ satisfies

a.

Xᴍ < 0.5

b.

Xᴍ = 0.5

c.

0.5 < Xᴍ < 0.64

d.

Xᴍ ≥ 0.64

Discuss
Answer: (d).Xᴍ ≥ 0.64
Q52.
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 Cᵨ of gases increases with increase in pressure, above atmospheric pressure.

c.

The value of Cᵨ at critical temperature and pressure reaches infinity.

d.

all (a), (b), and (c).

Discuss
Answer: (a).The effect of pressure on heat capacity of gases at pressure above one atmosphere and above the critical temperature is negligible.
Q53.
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)

Discuss
Answer: (c).both(a) & (b)
Q54.
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.

Discuss
Answer: (a).same elevation in boiling point.
Q55.
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%

Discuss
Answer: (b).90%
Q56.
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)

Discuss
Answer: (b).°API = (141.5/G) - 131.5
Q57.
S.T.P. corresponds to

a.

1 atm. absolute pressure & 15.5°C.

b.

760 mm Hg gauge pressure & 15.5°C.

c.

760 torr & 0°C.

d.

101.325 kPa gauge pressure & 15.5°C.

Discuss
Answer: (a).1 atm. absolute pressure & 15.5°C.
Q58.
With rise in pressure, the solubility of gases in solvent, at a fixed temperature

a.

increases

b.

decreases

c.

remains unchanged

d.

decreases linearly

Discuss
Answer: (a).increases
Q59.
Pick out the wrong statement.

a.

'Reduced temperature' of a substance is the ratio of its existing temperature to its critical temperature, both expressed on celsius scale.

b.

'Reduced pressure' is the ratio of the existing pressure of a substance to its critical pressure.

c.

'Reduced volume' is the ratio of the existing molal volume of a substance to its critical molal volume.

d.

none of these.

Discuss
Answer: (a).'Reduced temperature' of a substance is the ratio of its existing temperature to its critical temperature, both expressed on celsius scale.
Q60.
Vapor pressure of water at 100°C is about __________ bar.

a.

0.1013

b.

1.013

c.

10.13

d.

101.3

Discuss
Answer: (b).1.013
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