MCQs

Chemical Engineering MCQs with Explanations

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2071Chemical EngineeringMedium

A shallow pond in which the sewage is retained and biologically treated is called________?

ASkimming tank

BLagoon

CImhoff tank

DOxidation

Correct answer

D. Oxidation

Explanation

The correct answer is Oxidation.

2072Chemical EngineeringMedium

Raw materials for urea production are ________?

ACO2 and N2

BHNO3 and CaCO3

CCO2, H2 and N2

DNH3 and CO

Correct answer

C. CO2, H2 and N2

Explanation

The correct answer is CO2, H2 and N2.

2073Chemical EngineeringMedium

Specific gravity on API scale is given by the relation (where, G = specific gravity at 15.5°C)?

A°API = (141.5/G) – 131.5

B°API = (140/G) – 130

C°API = 200(G – 1)

D°API = 145 – (145/G)

Correct answer

A. °API = (141.5/G) – 131.5

Explanation

The correct answer is °API = (141.5/G) – 131.5.

2074Chemical EngineeringMedium

Steam economy in case of a triple effect evaporator will be ________?

ABetween 0 and 1

Correct answer

B. 1

Explanation

The correct answer is 1.

2075Chemical EngineeringMedium

Which of the following elements is not included in the scope of market analysis?

AOpportunities

BProduct distribution

CEconomics

DCompetition from other manufactures

Correct answer

C. Economics

Explanation

The correct answer is Economics.

2076Chemical EngineeringMedium

Piezometric head is the sum of the ________ heads?

ANone of these

BKinetic energy & pressure

CElevation & pressure

DElevation & kinetic energy

Correct answer

C. Elevation & pressure

Explanation

The correct answer is Elevation & pressure.

2077Chemical EngineeringMedium

The minimum plate spacing in most of the petroleum refinery distillation columns (of dia > 3 ft) is normally ________ inches?

A18

B36

D12

Correct answer

A. 18

Explanation

The correct answer is 18.

2078Chemical EngineeringMedium

Sand and ________ is fused at 1300°C, to produce sodium silicate?

ALimestone

BSodium sulphate

CCoke

DSoda ash

Correct answer

D. Soda ash

Explanation

The correct answer is Soda ash.

2079Chemical EngineeringMedium

Which of the following is an explosive?

ACellulose nitrate

BNitro-glycerine

CAll A, B., and C.

DTrinitrotoluene (TNT)

Correct answer

C. All A, B., and C.

Explanation

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

2080Chemical EngineeringMedium

Maximum consumption of polymers is in________?

AToys making

BElectrical insulation

CPackaging

DCoating and films

Correct answer

D. Coating and films

Explanation

The correct answer is Coating and films.

2071Chemical EngineeringMedium

A shallow pond in which the sewage is retained and biologically treated is called________?

ASkimming tank

BLagoon

CImhoff tank

DOxidation

Correct answer

D. Oxidation

Explanation

The correct answer is Oxidation.

2072Chemical EngineeringMedium

Raw materials for urea production are ________?

ACO2 and N2

BHNO3 and CaCO3

CCO2, H2 and N2

DNH3 and CO

Correct answer

C. CO2, H2 and N2

Explanation

The correct answer is CO2, H2 and N2.

2073Chemical EngineeringMedium

Specific gravity on API scale is given by the relation (where, G = specific gravity at 15.5°C)?

A°API = (141.5/G) – 131.5

B°API = (140/G) – 130

C°API = 200(G – 1)

D°API = 145 – (145/G)

Correct answer

A. °API = (141.5/G) – 131.5

Explanation

The correct answer is °API = (141.5/G) – 131.5.

2074Chemical EngineeringMedium

Steam economy in case of a triple effect evaporator will be ________?

ABetween 0 and 1

Correct answer

B. 1

Explanation

The correct answer is 1.

2075Chemical EngineeringMedium

Which of the following elements is not included in the scope of market analysis?

AOpportunities

BProduct distribution

CEconomics

DCompetition from other manufactures

Correct answer

C. Economics

Explanation

The correct answer is Economics.

2076Chemical EngineeringMedium

Piezometric head is the sum of the ________ heads?

ANone of these

BKinetic energy & pressure

CElevation & pressure

DElevation & kinetic energy

Correct answer

C. Elevation & pressure

Explanation

The correct answer is Elevation & pressure.

2077Chemical EngineeringMedium

The minimum plate spacing in most of the petroleum refinery distillation columns (of dia > 3 ft) is normally ________ inches?

A18

B36

D12

Correct answer

A. 18

Explanation

The correct answer is 18.

2078Chemical EngineeringMedium

Sand and ________ is fused at 1300°C, to produce sodium silicate?

ALimestone

BSodium sulphate

CCoke

DSoda ash

Correct answer

D. Soda ash

Explanation

The correct answer is Soda ash.

2079Chemical EngineeringMedium

Which of the following is an explosive?

ACellulose nitrate

BNitro-glycerine

CAll A, B., and C.

DTrinitrotoluene (TNT)

Correct answer

C. All A, B., and C.

Explanation

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

2080Chemical EngineeringMedium

Maximum consumption of polymers is in________?

AToys making

BElectrical insulation

CPackaging

DCoating and films

Correct answer

D. Coating and films

Explanation

The correct answer is Coating and films.