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 15 of 42

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Q141.
Addition of a non-volatile solute to a pure solvent

a.

increases its freezing point.

b.

increases its boiling point.

c.

decreases its freezing point.

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q142.
The depression in freezing point of a solution is

a.

inversely proportional to the mass of solvent.

b.

directly proportional to the mole of solute.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q143.
For the gaseous phase reaction,

Nโ‚‚ + Oโ‚‚ โ†” 2NO, ฮ”H = + 80 kJ/kg. mole;

the decomposition of NO is favoured by

a.

increasing the concentration of Nโ‚‚.

b.

decrease in temperature.

c.

increase in pressure.

d.

decrease in pressure.

Discuss
Answer: (b).decrease in temperature.
Q144.
Pick out the correct statement.

a.

Heat of solution is always positive.

b.

At equilibrium, ฮ”G is zero.

c.

For the reaction, PClโ‚… โ†” PClโ‚ƒ + Clโ‚‚, ฮ”G is less than ฮ”E

d.

The heating of water in a beaker is an example of an isolated system.

Discuss
Answer: (b).At equilibrium, ฮ”G is zero.
Q145.
In case of a solution (not of a solid in a liquid), whose total volume is less than the sum of the volumes of its components in their pure states, solubility is

a.

independent of temperature.

b.

increases with rise in pressure.

c.

increased with decrease in pressure.

d.

unchanged with pressure changes.

Discuss
Answer: (b).increases with rise in pressure.
Q146.
In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the

a.

total pressure.

b.

absolute humidity at a given temperature.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q147.
Which of the following is an exothermic reaction ?

a.

Conversion of graphite to diamond

b.

Decomposition of water

c.

Dehydrogenation of ethane to ethylene

d.

none of these

Discuss
Answer: (d).none of these
Q148.
Heat of solution in a system in which both solute and solvent are liquids is termed as

a.

heat of solvation.

b.

heat of hydration.

c.

standard integral heat of solution.

d.

heat of mixing.

Discuss
Answer: (d).heat of mixing.
Q149.
A solution is made by dissolving 1 kilo mole of solute in 2000 kg of solvent. The molality of the solution is

a.

2

b.

1

c.

0.5

d.

0.5

Discuss
Answer: (d).0.5
Q150.
Average molecular weight of air is about

a.

21

b.

29

c.

23

d.

79

Discuss
Answer: (b).29
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