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.
The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be

a.

2M

b.

M/2

c.

M

d.

M/4

Discuss
Answer: (a).2M
Q272.
Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xส™ and the vapour pressures of benzene and water at these conditions are pแตฅแดฎ and pแตฅแต‚ respectively. The partial pressure of benzene in air-vapour mixture is

a.

pแตฅแดฎ

b.

xส™.pแตฅแดฎ

c.

(Patm - pแตฅแต‚)xส™

d.

xส™.Patm

Discuss
Answer: (b).xส™.pแตฅแดฎ
Q273.
pH value of a solution containing equal concentration of hydroxyl and hydrogen ions will be

a.

0

b.

10

c.

7

d.

14

Discuss
Answer: (c).7
Q274.
The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is

a.

termed as relative saturation.

b.

not a function of the composition of gas mixture.

c.

called percentage saturation.

d.

not a function of the nature of vapor.

Discuss
Answer: (a).termed as relative saturation.
Q275.
No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules

a.

collide without loss of energy.

b.

do work equal to loss in kinetic energy.

c.

are above the inversion temperature.

d.

exert no attractive force on each other.

Discuss
Answer: (c).are above the inversion temperature.
Q276.
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
Q277.
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.
Q278.
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)
Q279.
The molar composition of a gas is 10% Hโ‚‚, 10% Oโ‚‚, 30% COโ‚‚ and balance Hโ‚‚O. If 50% Hโ‚‚O condenses, the final mole percent of Hโ‚‚ in the gas on a dry basis will be

a.

10%

b.

5%

c.

18.18%

d.

20%

Discuss
Answer: (d).20%
Q280.
The heats of vaporisation of CSโ‚‚, Cโ‚‚Hโ‚…OH & Hโ‚‚O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is

a.

Hโ‚‚O > Cโ‚‚Hโ‚…OH > CSโ‚‚

b.

CSโ‚‚ > Cโ‚‚Hโ‚…OH > Hโ‚‚O

c.

Hโ‚‚O > CSโ‚‚ > Cโ‚‚Hโ‚…OH

d.

CSโ‚‚ > Hโ‚‚O > Cโ‚‚Hโ‚…OH

Discuss
Answer: (a).Hโ‚‚O > Cโ‚‚Hโ‚…OH > CSโ‚‚
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