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 10 of 42

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Q91.
Pick out the wrong statement.

a.

The evaporation of aqueous solution of glucose causes its molarity to increase.

b.

Both the freezing point as well as boiling point of sea water is more than that of distilled water.

c.

The solution containing equal masses of two liquids 'X' and 'Y' has the same mole fraction of' 'X' and 'Y'.

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q92.
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

a.

1/2

b.

1/3

c.

1/4

d.

2/3

Discuss
Answer: (b).1/3
Q93.
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 Cᵨ = 29.1 J/mole.°C and, Cᵥ = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is

a.

13728 J

b.

19206 J

c.

4576 J

d.

12712 J

Discuss
Answer: (b).19206 J
Q94.
An oxidation process is accompanied by decrease in the

a.

number of electrons.

b.

oxidation number.

c.

number of ions.

d.

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

Discuss
Answer: (a).number of electrons.
Q95.
Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at

a.

heat conservation.

b.

yield enhancement.

c.

product enrichment.

d.

none of these.

Discuss
Answer: (c).product enrichment.
Q96.
Which of the following expressions defines the Baume gravity scale for liquids heavier than water ?

a.

(141.5/G) - 131.5

b.

145 - (145/G)

c.

200(G-1)

d.

(400/G) - 400

Discuss
Answer: (b).145 - (145/G)
Q97.
The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the

a.

temperature & pressure.

b.

number of intermediate chemical reactions involved.

c.

state of aggregation & the state of combination at the beginning & the end of the reaction.

d.

none of these.

Discuss
Answer: (b).number of intermediate chemical reactions involved.
Q98.
N.T.P. corresponds to

a.

1 atm.absolute pressure & 0°C.

b.

760 mm Hg gauge pressure & 0°C.

c.

760 torr & 15°C.

d.

101.325 KPa gauge pressure & 0°C.

Discuss
Answer: (a).1 atm.absolute pressure & 0°C.
Q99.
During a phase change process like sublimation, vaporisation, melting etc., the specific __________ does not change.

a.

enthalpy

b.

Gibbs free energy

c.

internal energy

d.

entropy

Discuss
Answer: (b).Gibbs free energy
Q100.
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies

a.

0 < Xw < 0.5

b.

Xw = 0.5

c.

0.5 < Xw < 1.0

d.

Xw = 1.0

Discuss
Answer: (c).0.5 < Xw < 1.0
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