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 29 of 42

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Q281.
A liquid is in equilibrium with its vapor at its boiling point. On an average, the molecules in the liquid and gaseous phases have equal

a.

kinetic energy.

b.

intermolecular forces of attraction.

c.

potential energy.

d.

total energy.

Discuss
Answer: (a).kinetic energy.
Q282.
Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³ . The diffusivity of aniline in air is 0.74 x 10⁻⁵ m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10⁻³. Its units are

a.

m/s

b.

cm/s

c.

mole/m².s.Pa

d.

kmole/m².s.Pa

Discuss
Answer: (c).mole/m².s.Pa
Q283.
If 1.5 moles of oxygen combines with aluminium to form Al₂O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm.

a.

27

b.

54

c.

5.4

d.

2.7

Discuss
Answer: (b).54
Q284.
The unit of dynamic viscosity is

a.

stoke

b.

poise

c.

gm/cm sec.

d.

both (b) & (c)

Discuss
Answer: (d).both (b) & (c)
Q285.
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

a.

independent of the temperature.

b.

increased with the increase in pressure.

c.

decreased with the increase in pressure.

d.

unchanged by the pressure change.

Discuss
Answer: (c).decreased with the increase in pressure.
Q286.
Saturated molal absolute humidity of the vapor-gas mixture depends upon the

a.

vapor pressure at dry bulb temperature

b.

total pressure

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) and (b)
Q287.
At a constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with rise of temperature due to

a.

decrease in mean free path.

b.

increased collision rate among molecules.

c.

increase in molecular attraction.

d.

increase in average molecular speed.

Discuss
Answer: (c).increase in molecular attraction.
Q288.
'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the

a.

temperature vs. log (vapor pressure).

b.

vapor pressure vs. log (temperature).

c.

log (temperature) vs. log (vapor pressure).

d.

vapor pressure vs. temperature.

Discuss
Answer: (a).temperature vs. log (vapor pressure).
Q289.
Boiling point of a non-homogeneous mixture of immiscible liquids is __________ that of any one of its separate components.

a.

lower than

b.

higher than

c.

equal to

d.

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

Discuss
Answer: (a).lower than
Q290.
A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor.

a.

saturated

b.

supersaturated

c.

superheated

d.

none of these

Discuss
Answer: (c).superheated
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