Chemical Engineering Archives

Chemical Engineering

Prepare with the best Chemical Engineering MCQs with answers and detailed explanations for exams and job tests. Our collection covers key topics such as chemical process calculations, thermodynamics, fluid mechanics, heat transfer, mass transfer, reaction engineering, instrumentation, and plant design. These Chemical Engineering multiple-choice questions are ideal for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and job interviews. Practice online with updated Chemical Engineering MCQs to strengthen your concepts and improve technical problem-solving skills.

5101. Presence of carbonaceous matter in the sewage

Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures

Reduces sulphate ions to sulphides causing obnoxious smell

Increases the quantity of chlorine used for its purification

All of the above

✅ The correct answer is option D.

5102. Phenol formaldehyde is produced by condensation polymerisation. It is also known as

Teflon

Bakelite

Polyester

Nylon-66

✅ The correct answer is option B.

5103. Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.

Phthalic anhydride

Vinyl chloride

Maleic anhydride

Dacron

✅ The correct answer is option B.

5104. Ordinary glass is not a/an

Amorphous isotropic material

Supercooled liquid

Material with sharp definite melting point

Electrical insulator

✅ The correct answer is option C.

5105. Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

< 10

> 30

✅ The correct answer is option B.

5106. Graphite is a/an

Electrical insulator

Allotrope of carbon

Moderator used in nuclear reactor

Both B and C

✅ The correct answer is option D.

5107. Coke used for the production of calcium carbide should have

Low ash content

Low ignition temperature

High electrical resistivity

All of the above

✅ The correct answer is option D.

5108. Linde process of gas liquefaction employs

Exchange of heat with colder stream

Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

Adiabatic expansion against a piston or in a turbine

Merely compressing the gas beyond its critical pressure

✅ The correct answer is option B.

5109. Air used in aerobic fermentation must be sterilized, otherwise the

Recovery of product will be difficult

Contamination of pure culture would result

Uniformity of product cannot be achieved

None of these

✅ The correct answer is option B.

5110. __________ of rubber decreases after its vulcanisation.

Resistance to the action of organic solvent

Tackiness

Maximum service temperature

Tensile strength

✅ The correct answer is option B.