Chemical Engineering Basics MCQ Questions & Answers

91

The capital & running costs of similar machines having unequal service life can be compared by the __________ method.

A) Equivalant annual cost B) Rate of return C) Present net worth D) Capitalised cost

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Answer & Solution

Answer: Option D

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92

Carburettor in a spark ignition engine is used to

A) Mix air-fuel in the desired ratio B) Maintain a constant speed at varying loads C) Adjust the stroke length D) Increase the compression ratio

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Answer & Solution

Answer: Option A

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93

A spark ignition petrol engine has

A) Throttle valve B) Carburettor C) Both A & B D) Neither A nor B

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Answer & Solution

Answer: Option C

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94

__________ joint is mostly used for joining pipes carrying water at low pressure.

A) Nipple B) Socket C) Union D) Bell and spigot

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Answer & Solution

Answer: Option B

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95

Quartz is a __________ material.

A) Diamagnetic B) Ferromagnetic C) Ferroelectric D) Piezoelectric

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Answer & Solution

Answer: Option D

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96

In cold working of metal as compared to its hot working

A) Cracks and blow holes are eliminated B) Ductility and impact strength improves C) Appreciable strain hardening is produced D) Yield stress, hardness and fatigue strength is not at all affected

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Answer & Solution

Answer: Option D

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97

Cast iron has the unique property of high

A) Ductility B) Damping characteristics C) Hardness D) Malleability

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Answer & Solution

Answer: Option B

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98

Cast iron has the unique property of high

A) Ductility B) Damping characteristics C) Hardness D) Malleability

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Answer & Solution

Answer: Option B

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99

Which of the following is the terminology used for the temperature at which the phase changes occur in a metal ?

A) Critical temperature B) Recrystallisation temperature C) Phase transformation temperature D) Transition temperature

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Answer & Solution

Answer: Option A

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100

Pick out the wrong statement.

A) Cold cracking of a weld is due to the presence of hydrogen gas in the weld B) True stress is given by, σ = σE (1 + εE), where σE and εE are engineering stress and engineering strain respectively C) Phosphorous can be easily recovered in the iron blast furnace D) High residual stress at the surface is beneficial for fatigue properties of a material

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Answer & Solution

Answer: Option C

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering