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 Hโ‚‚ 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.
At standard conditions,

Nโ‚‚ + 2Oโ‚‚ โ†” 2NOโ‚‚; ฮ”G° = 100 kJ/mole
NO + 1/2Oโ‚‚ โ†” 2NOโ‚‚; ฮ”G° = -35 kJ/mole

The standard free energy of formation of NO in kJ/mole is

a.

15

b.

30

c.

85

d.

170

Discuss
Answer: (c).85
Q77.
For a reaction, X โ†’ Y, if the concentration of 'X' is tripled; the rate becomes nine times. The order of reaction is

a.

0

b.

1

c.

2

d.

3

Discuss
Answer: (c).2
Q78.
The vapor pressure of liquids of similar chemical nature at any particular temperature __________ with increase in the molecular weight.

a.

increases

b.

decreases

c.

remains unchanged

d.

either (a) or (b); depends on the liquid

Discuss
Answer: (b).decreases
Q79.
The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.

a.

increases

b.

decreases

c.

remains unchanged

d.

increases linearly

Discuss
Answer: (b).decreases
Q80.
Mass number of an atom is the sum of the numbers of

a.

neutrons and protons

b.

protons and electrons

c.

neutrons and electrons

d.

both(a)&(b)

Discuss
Answer: (d).both(a)&(b)
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