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 36 of 42

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Q351.
The chemical nature of an element is independent of

a.

its atomic number.

b.

the number of protons or electrons present in it.

c.

the number of neutrons present in it.

d.

none of these.

Discuss
Answer: (c).the number of neutrons present in it.
Q352.
The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of

a.

formation

b.

solution

c.

combustion

d.

fusion

Discuss
Answer: (a).formation
Q353.
A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

a.

350

b.

485

c.

140

d.

345

Discuss
Answer: (a).350
Q354.
The activity co-efficient of a solution, which accounts for the departure of liquid phase from ideal solution behaviour

a.

measures the elevation in boiling point.

b.

is not dependent on the temperature.

c.

is a function of the liquid phase composition.

d.

measures the depression in freezing point.

Discuss
Answer: (c).is a function of the liquid phase composition.
Q355.
Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult's law is proportional to the

a.

temperature.

b.

volume of solution.

c.

moles of non-volatile solute.

d.

none of these.

Discuss
Answer: (a).temperature.
Q356.
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).
Q357.
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
Q358.
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.
Q359.
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
Q360.
Average molecular weight of air is about

a.

21

b.

29

c.

23

d.

79

Discuss
Answer: (b).29
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