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Chemical Engineering MCQs with Explanations

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61Chemical EngineeringMedium

The single parameter model proposed for describing non-ideal flow is the ________ model?

ADispersion

BBoth A. & B.

CNeither A. nor B.

DTank in series

Correct answer

B. Both A. & B.

Explanation

The correct answer is Both A. & B..

62Chemical EngineeringMedium

The contraction co-efficient for Borda’s mouthpiece (for frictionless fluid) is________?

A0.94

B0.1

C0.5

Correct answer

C. 0.5

Explanation

The correct answer is 0.5.

63Chemical EngineeringMedium

Presence of manganese in alloy steel improves its________?

AAbrasion resistance & toughness

BCutting ability

CElasticity & creep resistance

DCorrosion resistance

Correct answer

A. Abrasion resistance & toughness

Explanation

The correct answer is Abrasion resistance & toughness.

64Chemical EngineeringMedium

Spark plug is provided in a/an________?

ADiesel engine

BEngine having carburettor

CCompression ignition engine

DBoth B. & C.

Correct answer

B. Engine having carburettor

Explanation

The correct answer is Engine having carburettor.

65Chemical EngineeringMedium

Fussain ________?

AAll A., B. and C.

BHas highest fixed carbon and lowest volatile matter content of all the four banded components

CIs friable, charcoal like substance

DIs non-coking, but when blended with highly coking coal, controls its swelling and produces

Correct answer

A. All A., B. and C.

Explanation

The correct answer is All A., B. and C..

66Chemical EngineeringMedium

Angular displacement can be measured suitably by a________?

ALinear variable differential transducer (LVDT)

BStroboscope

CTachometer

DShaft encoder

Correct answer

D. Shaft encoder

Explanation

The correct answer is Shaft encoder.

67Chemical EngineeringMedium

Aerosols present in atmospheric air may be________?

APositively charged

BCombination of all A., B. & C.

CNegatively charged

DNeutral

Correct answer

B. Combination of all A., B. & C.

Explanation

The correct answer is Combination of all A., B. & C..

68Chemical EngineeringMedium

The critical pressure at which the latent heat of vaporization of steam becomes zero is ________ Kg/cm2?

A273.15

B100.03

C225.65

D373.15

Correct answer

C. 225.65

Explanation

The correct answer is 225.65.

69Chemical EngineeringMedium

For pipe flows, head is proportional to ________ at constant capacity(where, D = pipe diameter)?

A1/D

B1/D2

CD2

D1/D5

Correct answer

D. 1/D5

Explanation

The correct answer is 1/D5.

70Chemical EngineeringMedium

Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________?

BNone of these

Correct answer

A. 1

Explanation

The correct answer is 1.

Fussain ________?

AAll A., B. and C.

BHas highest fixed carbon and lowest volatile matter content of all the four banded components

CIs friable, charcoal like substance

DIs non-coking, but when blended with highly coking coal, controls its swelling and produces

Correct answer

A. All A., B. and C.

Explanation

The correct answer is All A., B. and C..