531. Overheating of satellites during re-entry to earth is controlled by
A. Thick insulation
B. Ceramic lining
C. Cooling by flow of air over the surface
D. None of these
✅ The correct answer is option C.
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.
532. Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young’s modulus, G = Modulus of rigidity or shear modulus v = Poisson’s ratio)?
A. E = 2G (1 + v)
B. E = G (1 + v)
C. E = G (1 + v)/2
D. E = 2G (1 + 2v)
✅ The correct answer is option A.
533. The most important consideration in value engineering is the
A. Profit maximisation
B. Customer satisfaction
C. Cost reduction
D. Process improvement
✅ The correct answer is option B.
534. At 100% relative humidity, the dew point temperature of moist air is
A. Less than the wet bulb temperature
B. More than the wet bulb temperature
C. Equal to the wet bulb temperature
D. Equal to the ambient temperature
✅ The correct answer is option B.
535. Most important property of steels for use in automobile bodies is the
A. Formability
B. Yield strength
C. Toughness
D. Resilience
✅ The correct answer is option A.
536. In inventory control theory, the economic order quantity (EOQ) is the
A. Lot size corresponding to break even analysis
B. Average level of inventory
C. Optimum lot size
D. None of these
✅ The correct answer is option C.
537. Energy of the sun arises mainly from __________ reactions.
A. Fusion
B. Fission
C. Combustion
D. None of these
✅ The correct answer is option A.
538. A colloidal system, in which a liquid is dispersed in gas is called a/an
A. Gel
B. Aerosol
C. Foam
D. Emulsion
✅ The correct answer is option B.
539. Which of the following is not a ferromagnetic material?
A. Nickel
B. Cobalt
C. Aluminium
D. Iron
✅ The correct answer is option C.
540. Pick out the correct statement about the condensation.
A. Filmwise condensation gives a lower heat transfer rate than the dropwise condensation
B. Suitable coating or vapour additive is used to promote film wise condensation
C. If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it
D. Reynolds number of condensing liquid is based on its mass flow rate
✅ The correct answer is option B.