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 34 of 42

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Q331.
Enthalpy of formation of NH₃ is - 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH₃ → N₂ + 3H₂, is equal to __________ kJ/kg. mole.

a.

46

b.

92

c.

-23

d.

-92

Discuss
Answer: (b).92
Q332.
Ideal solution is formed, when its components have zero

a.

heat of mixing.

b.

volume change.

c.

both (a) & (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b).
Q333.
Pick out the wrong statement:

a.

A vapor is termed as a saturated vapor, if its partial pressure equals its equilibrium vapor pressure.

b.

A vapor whose partial pressure is less than its equilibrium vapor pressure, is termed as a 'superheated vapor'.

c.

The temperature at which a vapor is saturated is termed as the boiling point.

d.

The difference between the existing temperature of a vapor and its saturation temperature (i.e. dew point) is called its 'degree of superheat'.

Discuss
Answer: (c).The temperature at which a vapor is saturated is termed as the boiling point.
Q334.
'Giga' stands for

a.

10⁹

b.

10⁻¹²

c.

10¹²

d.

10¹⁵

Discuss
Answer: (a).10⁹
Q335.
The equilibria relations in a multicom-ponent and multiphase system can not be calculated with the help of the

a.

phase rule

b.

experimental data

c.

emperical equations

d.

theoretical equations

Discuss
Answer: (a).phase rule
Q336.
The effect of pressure on the heat capacity of the gases __________ is negligible.

a.

at pressure below one atmosphere

b.

below the critical temperature

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q337.
One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m³. The amount of water vapour condensed (in kg) is

a.

0.0

b.

0.065

c.

0.1

d.

1.0

Discuss
Answer: (b).0.065
Q338.
Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?

a.

ΔH = 1 (+ ve)and Δ V = -ve

b.

ΔH = 0

c.

ΔV = 0

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q339.
Number of gm moles of solute dissolved in 1 kg of solvent is called its

a.

normality

b.

molarity

c.

molality

d.

formality

Discuss
Answer: (c).molality
Q340.
Size range of the colloidals particles is

a.

5 - 200 milli-microns

b.

50 - 200 microns

c.

500 - 1000 microns

d.

10 - 50 Angstrom

Discuss
Answer: (a).5 - 200 milli-microns
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