Engineering MCQs

Pick out the correct statement

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A. Jet engine can work, where there is no atmosphere
B. Rocket engines cannot work, where there is no atmosphere
C. Rocket engines carry oxygen required for the combustion in the form of oxidiser
D. Jet engines also carry oxidiser
✅ The correct answer is option C.

Joule-Thomson co-efficient is the ratio of

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A. Pressure change to temperature change occuring during adiabatic compression of a gas
B. Pressure change to temperature change occuring during adiabatic throttling of a gas
C. Temperature change to pressure change occuring during adiabatic compression of a gas
D. Temperature change to pressure change occuring during adiabatic throttling of a gas
✅ The correct answer is option D.

Batch process is preferred over continuous process, when the

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A. Product yields and quality can not be achieved in continuous process, because of long residence time
B. Sales demand of product is not steady
C. Same equipment can not be used for several processes of the same nature
D. All of the above
✅ The correct answer is option B.

Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10⁻² atm, the partial pressure of B is 10⁻³ atm and the partial pressure of AB is 1 atm, the equilibrium constant ‘K’ is

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A. 10 atmv
B. 10⁵ atm⁻¹
C. 10 (dimensionless)
D. 10⁵ (dimensionless)
✅ The correct answer is option B.