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.

7591. Even though bubble cap towers are very effective for humidification operation, they are not used commonly in industries, because of the

High evaporation losses of water

High pressure drop of the gas

Difficulty in its fabrication

None of these

✅ The correct answer is option B.

7592. Experimental determination of __________ is done by wetted wall column method.

Diffusion co-efficient

Mass transfer co-efficient

NTU

None of these

✅ The correct answer is option B.

7593. The assumption made in Elis method in distillation is that enthalpy concentration lines of vapor and liquid are

Parallel

Straight

Both parallel and straight

Neither parallel nor straight

✅ The correct answer is option C.

7594. When the gas to be dissolved in liquid is a/an __________ then normally co-current adsorber are used.

Mixture of two gases

Pure gas

Ideal gas

Sparingly soluble gas

✅ The correct answer is option B.

7595. Powdery materials can be guarded against caking tendency on storage by

Providing irregular grain size

Providing minimum percentage of voids

Having maximum possible points of contact

None of these

✅ The correct answer is option D.

7596. One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect

The product composition but not the fraction vaporised

The product composition as well as the fraction vaporised

The fraction vaporised but not the product composition

Neither the product composition nor the fraction vaporised

✅ The correct answer is option C.

7597. __________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.

Watted wall

Packed

Plate

Spray

✅ The correct answer is option C.

7598. Which of the following is directly concerned with psychrometry?

Lewis reltionship

Galileo number

Weber number

Dean number

✅ The correct answer is option A.

7599. Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

> 1

< 1

≤ 1

✅ The correct answer is option B.

7600. With increase in temperature, the solubility of gases in liquids, at fixed pressure

Increases

Decreases

Remains same

Either A or B, depends on the system

✅ The correct answer is option B.