Basic Chemical Engineering MCQs

Practice Basic Chemical Engineering MCQs with answers and explanations to prepare for exams, interviews, and job tests. Our question bank covers fundamental topics such as units and dimensions, material and energy balances, fluid mechanics, thermodynamics, heat transfer, mass transfer, and chemical process basics. These multiple-choice questions are designed for students, fresh graduates, and competitive exam aspirants preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your core concepts and problem-solving skills with our updated Basic Chemical Engineering MCQs.

262. Glycerene is used as a coolant in cooling of some engines instead of water, because

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A. Its higher boiling point (290°C) increases its heat carrying capacity
B. Compartively less weight of coolant is required
C. Smaller radiator can be used
D. All of the above
✅ The correct answer is option D.

263. For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg) ?

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A. Propane and acetylene
B. Propane and LPG
C. Sewage gas and gobar gas
D. B.F gas and coke oven gas
✅ The correct answer is option D.

264. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place

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A. The better insulation material should be put just next to pipe (i.e., inside)
B. The better insulating material should be put outside
C. Either of the insulating material could be put on either side
D. Steam temperature is considered before deciding as to which insulating material is to be put inside (i.e., just next to the pipe)
✅ The correct answer is option A.