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Chemical Engineering MCQs with Explanations

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1641Chemical EngineeringMedium

Hot wire anemometer is used for the measurement of________?

AThermal conductivity of gases

BFlow rates of fluids

CVery high temperature

DFlow rates of granular solids

Correct answer

B. Flow rates of fluids

Explanation

The correct answer is Flow rates of fluids.

1642Chemical EngineeringMedium

________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertilizer plant?

ASulphur

BPhosphorous

CCalcium

DFluorine

Correct answer

D. Fluorine

Explanation

The correct answer is Fluorine.

1643Chemical EngineeringMedium

Softening point of high density polythene is about ________ °C?

A205

B165

C85

D135

Correct answer

D. 135

Explanation

The correct answer is 135.

1644Chemical EngineeringMedium

Check in a centrifugal pump is________?

AAll A., B. and C.

BProvided in the discharge line

CGenerally a globe valve

DProvided to prevent liquid from backing up through the pump when the pump is turned off or

Correct answer

A. All A., B. and C.

Explanation

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

1645Chemical EngineeringMedium

The-relative volatility for separation of a non-ideal binary mixture by distillation should be ________?

Correct answer

A. 1

Explanation

The correct answer is 1.

1646Chemical EngineeringMedium

Pyrolysis of kerosene or natural gasoline is done to produce mainly the________?

ADiesel

BLighter paraffins

CStabilised gasoline

DOlefins and aromatics

Correct answer

D. Olefins and aromatics

Explanation

The correct answer is Olefins and aromatics.

1647Chemical EngineeringMedium

The dimensions of rate constant for reaction 3A → B are (l/gm mole)/min. Therefore the reaction order is________?

Correct answer

A. 2

Explanation

The correct answer is 2.

1648Chemical EngineeringMedium

Which of the following alloy steels is the most suitable for making gun barrels and projectiles?

ATungsten steel

BNickel-chrome steel

CMolybdenum steel

DCobalt steel

Correct answer

B. Nickel-chrome steel

Explanation

The correct answer is Nickel-chrome steel.

1649Chemical EngineeringMedium

Biological shield in a nuclear reactor is generally provided to protect against the________?

AElectrons

BGamma rays & neutrons

Cβ-rays

Dα-rays

Correct answer

B. Gamma rays & neutrons

Explanation

The correct answer is Gamma rays & neutrons.

1650Chemical EngineeringMedium

The discharge co-efficient for an orifice meter does not depend upon the ________?

AType of orifice & the Reynolds number

BPipe length

CPipe diameter

DRatio of pipe diameter to orifice diameter

Correct answer

B. Pipe length

Explanation

The correct answer is Pipe length.

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