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.

5441. Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) for steam reforming of methane and (ii) for ammonia synthesis.

(i) – Ni/Al2O₃; (ii) – Cu – ZnO/Al2O₃

(i) – Fe/Al2O₃; (ii) – Cu – ZnO/Al2O₃

(i) – Ni/Al2O₃; (ii) – Fe/Al2O₃

(i) – Fe/Al2O₃; (ii) – Ni/Al2O₃

✅ The correct answer is option C.

5442. Sulphuric acid saturated with SO₃ is called

Concentrated H₂SO₄

Sulphurous acid

Oleum

None of these

✅ The correct answer is option C.

5443. Setting of plaster of paris is accompanied with

Hydration

Dehydration

Hydrolysis

Loss of CO₂

✅ The correct answer is option A.

5444. Mercury cells for caustic soda manufacture, compared to diaphragm cells

Require lower initial investment

Require more power

Produce lower concentration NaOH

None of these

✅ The correct answer is option D.

5445. Concentration of hydrogen peroxide is done by

Crystallisation

Vacuum crystallisation

Atmospheric distillation

Dehydration

✅ The correct answer is option B.

5446. Economics of ‘Solvay Process’ depends upon the efficiency of

Carbonating tower

Ammonia recovery

Ammonia recovery and size of the plant

Ammoniation of salt solution

✅ The correct answer is option C.

5447. The major use of butadiene is

As a plasticiser for unsaturated polyester

In the manufacture of synthetic rubber

As an anti-skinning agent in paint

None of these

✅ The correct answer is option B.

5448. Hydrodenation of vegetable oils is a/an __________ reaction.

Endothermic

Autocatalytic

Exothermic

Homogenous

✅ The correct answer is option C.

5449. Poly Vinyl Chloride (P.V.C.) is a __________ material.

Thermosetting

Thermoplastic

Fibrous

Chemically active

✅ The correct answer is option B.

5450. Which of the following is not an insecticide?

Hydrocyanic acid

Nicotine

Sodium flouride

Hexane

✅ The correct answer is option D.