MCQs

Chemical Engineering MCQs with Explanations

Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.

24%

1,990 of 8,342MCQs reviewed

Study Mode — explanations are always visiblePrefer a timed quiz? Start test

1991Chemical EngineeringMedium

All pipes of a particular nominal size have the same________?

ANone of these

BInside diameter

COutside diameter

DThickness

Correct answer

C. Outside diameter

Explanation

The correct answer is Outside diameter.

1992Chemical EngineeringMedium

The stress developed in a material without any permanent set is called the________?

AYield stress

BElastic limit

CBreaking stress

DUltimate stress

Correct answer

B. Elastic limit

Explanation

The correct answer is Elastic limit.

1993Chemical EngineeringMedium

Removal of activated carbon from glycerine is done by ________?

ANone of these

BPlate and frame filter

CRotary vacuum filter

DBatch basket centrifuge

Correct answer

B. Plate and frame filter

Explanation

The correct answer is Plate and frame filter.

1994Chemical EngineeringMedium

One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to________?

ATo superheat the steam

BHeat the water from 0°C to 100°C

CData insufficient, can’t be predicted

DEvaporate the water

Correct answer

D. Evaporate the water

Explanation

The correct answer is Evaporate the water.

1995Chemical EngineeringMedium

Which of the following is generally considered as opaque surface towards radiations?

ABoth B. and C.

BLiquids

CGases

DSolids

Correct answer

A. Both B. and C.

Explanation

The correct answer is Both B. and C..

1996Chemical EngineeringMedium

Polycondensation reaction of polymerisation ________?

AProduces only thermoplastic material

BDoes not need any catalyst

CProduces epoxy polymers

DDoes not produce linear polymers

Correct answer

C. Produces epoxy polymers

Explanation

The correct answer is Produces epoxy polymers.

1997Chemical EngineeringMedium

For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is________?

ANu = (π/2) Gz

BNu = 2Gz0.5

CNu = 0.023 Re0.8. Pr0.4

DNu = (2/π) Gz

Correct answer

D. Nu = (2/π) Gz

Explanation

The correct answer is Nu = (2/π) Gz.

1998Chemical EngineeringMedium

In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid________?

AVaries directly as the area and the LMTD

BNone of these

CDirectly proportional to LMTD and inversely proportional to the area

DVaries as square of the area

Correct answer

A. Varies directly as the area and the LMTD

Explanation

The correct answer is Varies directly as the area and the LMTD.

1999Chemical EngineeringMedium

Which of the following is not used as a filter medium in case of corrosive liquids?

AGlass cloth

BMetal cloth of monel or stainless steel

CCotton fabric

DNylon

Correct answer

C. Cotton fabric

Explanation

The correct answer is Cotton fabric.

2000Chemical EngineeringMedium

The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C- 1 respectively. The ambient air is at 30°C and the heat transfer co-efficient between the outer surface of wall and air is 20 W.m-2.°C-1. The rate of heat loss from the outer surface in W.m-2is________?

A175

B165.4

C167.5

D172.5

Correct answer

B. 165.4

Explanation

The correct answer is 165.4.

1991Chemical EngineeringMedium

All pipes of a particular nominal size have the same________?

ANone of these

BInside diameter

COutside diameter

DThickness

Correct answer

C. Outside diameter

Explanation

The correct answer is Outside diameter.

1992Chemical EngineeringMedium

The stress developed in a material without any permanent set is called the________?

AYield stress

BElastic limit

CBreaking stress

DUltimate stress

Correct answer

B. Elastic limit

Explanation

The correct answer is Elastic limit.

1993Chemical EngineeringMedium

Removal of activated carbon from glycerine is done by ________?

ANone of these

BPlate and frame filter

CRotary vacuum filter

DBatch basket centrifuge

Correct answer

B. Plate and frame filter

Explanation

The correct answer is Plate and frame filter.

1994Chemical EngineeringMedium

One kilogram of water at 0°C is changed to superheated steam of one atm pressure and 300° C. The major heat consumption in the process will be to________?

ATo superheat the steam

BHeat the water from 0°C to 100°C

CData insufficient, can’t be predicted

DEvaporate the water

Correct answer

D. Evaporate the water

Explanation

The correct answer is Evaporate the water.

1995Chemical EngineeringMedium

Which of the following is generally considered as opaque surface towards radiations?

ABoth B. and C.

BLiquids

CGases

DSolids

Correct answer

A. Both B. and C.

Explanation

The correct answer is Both B. and C..

1996Chemical EngineeringMedium

Polycondensation reaction of polymerisation ________?

AProduces only thermoplastic material

BDoes not need any catalyst

CProduces epoxy polymers

DDoes not produce linear polymers

Correct answer

C. Produces epoxy polymers

Explanation

The correct answer is Produces epoxy polymers.

1997Chemical EngineeringMedium

For a liquid in laminar flow through a very long tube, when the exit fluid temperature approaches the wall temperature, the equation to be used is________?

ANu = (π/2) Gz

BNu = 2Gz0.5

CNu = 0.023 Re0.8. Pr0.4

DNu = (2/π) Gz

Correct answer

D. Nu = (2/π) Gz

Explanation

The correct answer is Nu = (2/π) Gz.

1998Chemical EngineeringMedium

In a heat exchanger, the rate of heat transfer from the hot fluid to the cold fluid________?

AVaries directly as the area and the LMTD

BNone of these

CDirectly proportional to LMTD and inversely proportional to the area

DVaries as square of the area

Correct answer

A. Varies directly as the area and the LMTD

Explanation

The correct answer is Varies directly as the area and the LMTD.

1999Chemical EngineeringMedium

Which of the following is not used as a filter medium in case of corrosive liquids?

AGlass cloth

BMetal cloth of monel or stainless steel

CCotton fabric

DNylon

Correct answer

C. Cotton fabric

Explanation

The correct answer is Cotton fabric.

2000Chemical EngineeringMedium

The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C- 1 respectively. The ambient air is at 30°C and the heat transfer co-efficient between the outer surface of wall and air is 20 W.m-2.°C-1. The rate of heat loss from the outer surface in W.m-2is________?

A175

B165.4

C167.5

D172.5

Correct answer

B. 165.4

Explanation

The correct answer is 165.4.