Stoichiometry Mcqs

This set of Chemical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Stoichiometry ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Chemical Engineering Stoichiometry. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Stoichiometry comprehensively.

2.
With rise in temperature, the solubility of ammonia in water at a fixed pressure__________________?

Increases

Decreases

Remains unchanged

Increases exponentially

3.
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______________?

Kinetic energy

Intermolecular forces of attraction

Potential energy

Total energy

4.
A saturated vapor on being compressed would___________________?

Condense

Form wet steam

Both A. & B.

Neither A. nor B.

5.
The density of a liquid is 1500 kg/m3. Its value in gin/litre will be equal to________________?

1.5

15

150

1500

6.
Avogadro’s number is equal to__________________?

6.023 × 1023 molecules/kg.mole

6.023 × 1023 molecules/gm.mole

6.023 × 1016 molecules/kg.mole

6.023 × 1026 molecules/gm.mole

7.
The value of the gas-law constant ‘R’ is 1.987 ?

Kcal/kg-mole.°C

Btu/lb-mole.°R

Kcal/kg-mole.°K

Both B. & C.

8.
The atomic heat capacities of all solid elements ______________ with decrease in temperature?

Increases

Decreases

Remains unchanged

Approach zero at 0°C

10.
Measurement of the amount of dry gas collected over water from volume of moist gas is based on the___________________?

Charle’s law

Dalton’s law of partial pressures

Avogadro’s hypothesis

Boyle’s law

11.
Saturated molal absolute humidity of the vapor-gas mixture depends upon the______________________?

Vapor pressure at dry bulb temperature

Total pressure

Both A. and B.

Neither A. nor B.

12.
Pick out the wrong statement about the recycle stream in a process ?

Recycling in a process stream helps in utilising the valuable reactants to the maximum with

Imum loss of reactants

The ratio of the quantity of a reactant present in the reactor feed of a recycling operation to the

Ntity of the same reactant entering the process as fresh feed is called combined feed ratio

13.
Osmotic pressure of the solution can be increased by_________________?

Decreasing its temperature

Increasing the volume of the vessel containing the solution

Diluting the solution

None of these

14.
Two solutions A1 and A2 have pH value of 2 and 6 respectively. It implies that the solution_____________________?

A2 is more alkaline than solution A2

A1 is highly acidic

A1 is very slightly acidic

Both A. & C.

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