MCQs

Chemical Engineering MCQs with Explanations

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2991Chemical EngineeringMedium

Which of the following will generate maximum volume of product of complete combustion (Nm3/Nm3 of fuel)?

ANatural gas

BProducers’ gas

CCarburetted water gas

DBlast furnace gas

Correct answer

A. Natural gas

Explanation

The correct answer is Natural gas.

2992Chemical EngineeringMedium

Raoult’s law is applicable to the________?

AIdeal solutions

BNon-ideal gases

CReal solutions

DMixture of water and alcohol

Correct answer

A. Ideal solutions

Explanation

The correct answer is Ideal solutions.

2993Chemical EngineeringMedium

Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the ________ moisture?

AUnbound

BNone of these

CCritical

DBound

Correct answer

D. Bound

Explanation

The correct answer is Bound.

2994Chemical EngineeringMedium

The minimum shell thickness for tank ≤ 15 metres diameter is limited to ________ mm, for reasons of elastic stability?

A10

D15

Correct answer

B. 5

Explanation

The correct answer is 5.

2995Chemical EngineeringMedium

Pick out the wrong statement?

APlate efficiency increases with increase in superficial vapour velocity till entrainment limit

BToo small a plate spacing can cause a low efficiency, if the vapour velocity is greater than the allowable value

CNone of these

DIncrease in depth of the liquid about the slots increases the plate efficiency, particularly if the liquid depth is < 1"

Correct answer

C. None of these

Explanation

The correct answer is None of these.

2996Chemical EngineeringMedium

Which of the following quantities need not be fixed before starting the design of a cocurrent absorber?

ANone of these

BFlow rate of entering liquid

CHeat gain or loss

DFlow rate of gas

Correct answer

B. Flow rate of entering liquid

Explanation

The correct answer is Flow rate of entering liquid.

2997Chemical EngineeringMedium

On addition of 1 c.c. of dilute hydrochloric acid (1% concentration) to 80 c.c. of a buffer solution of pH = 4, the pH of the solution becomes________?

Correct answer

A. 4

Explanation

The correct answer is 4.

2998Chemical EngineeringMedium

Which of the following is not a ferromagnetic material?

AAluminium

BNickel

CCobalt

DIron

Correct answer

A. Aluminium

Explanation

The correct answer is Aluminium.

2999Chemical EngineeringMedium

Which of the following is a moderating material used in nuclear reactor?

ACadmium

BGraphite

CZircaloy (an alloy of zirconium and aluminium)

DStainless steel

Correct answer

B. Graphite

Explanation

The correct answer is Graphite.

3000Chemical EngineeringMedium

A pipe is generally made of circular cross-section, because a circular cross-section has the________?

ALowest surface area requirement for a given volume

BBoth A. & B.

CHigher structural strength

DNone of these

Correct answer

B. Both A. & B.

Explanation

The correct answer is Both A. & B..

Pick out the wrong statement?

APlate efficiency increases with increase in superficial vapour velocity till entrainment limit

BToo small a plate spacing can cause a low efficiency, if the vapour velocity is greater than the allowable value

CNone of these

DIncrease in depth of the liquid about the slots increases the plate efficiency, particularly if the liquid depth is < 1"

Correct answer

C. None of these

Explanation

The correct answer is None of these.