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 28 of 42

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Q271.
With increase in the solute concentration, the specific heat of aqueous solutions

a.

increases

b.

decreases

c.

remains unchanged

d.

either (a) or (b); depends on the type of solution

Discuss
Answer: (b).decreases
Q272.
The heat capacity of a substance is

a.

greater for liquid state than for solid state.

b.

lower for liquid state than for gaseous state.

c.

higher for solid state than for liquid state.

d.

equal for solid and liquid states below melting point.

Discuss
Answer: (a).greater for liquid state than for solid state.
Q273.
The heat of solution depends upon the

a.

nature of solvent

b.

concentration of solution

c.

nature of solute

d.

all (a), (b) & (c)

Discuss
Answer: (d).all (a), (b) & (c)
Q274.
The molar composition of a gas is 10% H₂, 10% O₂, 30% CO₂ and balance H₂O. If 50% H₂O condenses, the final mole percent of H₂ in the gas on a dry basis will be

a.

10%

b.

5%

c.

18.18%

d.

20%

Discuss
Answer: (d).20%
Q275.
The heats of vaporisation of CS₂, C₂H₅OH & H₂O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is

a.

H₂O > C₂H₅OH > CS₂

b.

CS₂ > C₂H₅OH > H₂O

c.

H₂O > CS₂ > C₂H₅OH

d.

CS₂ > H₂O > C₂H₅OH

Discuss
Answer: (a).H₂O > C₂H₅OH > CS₂
Q276.
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.
Q277.
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
Q278.
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
Q279.
The unit of dynamic viscosity is

a.

stoke

b.

poise

c.

gm/cm sec.

d.

both (b) & (c)

Discuss
Answer: (d).both (b) & (c)
Q280.
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.
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