MCQs

Chemical Engineering MCQs with Explanations

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1021Chemical EngineeringMedium

The product (s) of roasting of a sulphide ore is (are)?

ADependent on temperature and partial pressure of oxygen & sulphur dioxide

BSulphate only

COxide only

DOxide and sulphate

Correct answer

C. Oxide only

Explanation

The correct answer is Oxide only.

1022Chemical EngineeringMedium

Half life period of a chemical reaction is proportional to CA0 -1, if the reaction is of ________ order?

AFirst

BThird

CZero

DSecond

Correct answer

D. Second

Explanation

The correct answer is Second.

1023Chemical EngineeringMedium

Glass lined vessels are not used for handling________?

AHydrofluoric acid

BDilute HNO3

CDilute H2SO4

DDilute HCI

Correct answer

A. Hydrofluoric acid

Explanation

The correct answer is Hydrofluoric acid.

1024Chemical EngineeringMedium

Satellite is a ________ material?

AFerrous

BCeramic

CNon-ferrous cast alloy cutting tool

DCemented carbide

Correct answer

C. Non-ferrous cast alloy cutting tool

Explanation

The correct answer is Non-ferrous cast alloy cutting tool.

1025Chemical EngineeringMedium

Heat of reaction is not influenced by________?

ANone of these

BThe route/method through which final products are obtained

CThe physical state (e.g., solid, liquid or gaseous) of reactants and products

DWhether the reaction is carried out at constant temperature or constant pressure

Correct answer

B. The route/method through which final products are obtained

Explanation

The correct answer is The route/method through which final products are obtained.

1026Chemical EngineeringMedium

Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is ________ percent?

A0.2

B0.5

C0.35

D0.02

Correct answer

A. 0.2

Explanation

The correct answer is 0.2.

1027Chemical EngineeringMedium

The change in Gibbs free energy for vaporisation of a pure substance is________?

AZero

BNegative

CPositive

DMay be positive or negative

Correct answer

A. Zero

Explanation

The correct answer is Zero.

1028Chemical EngineeringMedium

Which of the following is directly concerned with Psychrometry?

AGalileo number

BDean number

CWeber number

DLewis relationship

Correct answer

D. Lewis relationship

Explanation

The correct answer is Lewis relationship.

1029Chemical EngineeringMedium

Which of the following is a constituent of coffee?

ANicotine

BCalgon

CCaffeine

DLignin

Correct answer

C. Caffeine

Explanation

The correct answer is Caffeine.

1030Chemical EngineeringMedium

Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of________?

ACalcium sulphate

BMagnesium chloride

CSodium sulphate

DSodium chloride

Correct answer

D. Sodium chloride

Explanation

The correct answer is Sodium chloride.

Heat of reaction is not influenced by________?

ANone of these

BThe route/method through which final products are obtained

CThe physical state (e.g., solid, liquid or gaseous) of reactants and products

DWhether the reaction is carried out at constant temperature or constant pressure

Correct answer

B. The route/method through which final products are obtained

Explanation

The correct answer is The route/method through which final products are obtained.