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 8 of 42

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Q71.
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.
Q72.
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
Q73.
Average molecular weight of air is about

a.

21

b.

29

c.

23

d.

79

Discuss
Answer: (b).29
Q74.
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H₂ produced will be __________ gm.

a.

0.5

b.

1

c.

3

d.

5

Discuss
Answer: (a).0.5
Q75.
Pick out the wrong unit conversion of calorific value.

a.

1 kcal/kg = 1.8 BTU/lb = 4.186 kJ/kg.

b.

1 BTU/ft³ = 8.9 kcal/m³ = 0.038 MJ/m³.

c.

1 BTU/lb = 2.3 kcal/kg.

d.

1 kcal/m³ = 0.1124 BTU/ft³.

Discuss
Answer: (c).1 BTU/lb = 2.3 kcal/kg.
Q76.
Increasing the temperature of an aqueous solution will cause decrease in its

a.

molality

b.

mole fraction

c.

weight percent

d.

molarity

Discuss
Answer: (d).molarity
Q77.
Assuming that CO₂ obeys perfect gas law, calculate the density of CO₂ (in kg/m³) at 263°C and 2 atm.

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
Q78.
One micron is equal to

a.

10⁻⁴ mm

b.

10⁻⁴ cm

c.

10⁻⁶ m

d.

both (b) & (c)

Discuss
Answer: (d).both (b) & (c)
Q79.
Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10⁻³ T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to - 100°C is

a.

10.73 kJ

b.

16.15 kJ

c.

18.11 kJ

d.

18.33 kJ

Discuss
Answer: (c).18.11 kJ
Q80.
Gases diffuse faster compared to liquids because of the reason that the liquid molecules

a.

are held together by stronger inter-molecular forces.

b.

move faster.

c.

have no definite shape.

d.

are heavier

Discuss
Answer: (a).are held together by stronger inter-molecular forces.
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