MCQs

Chemical Engineering MCQs with Explanations

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1801Chemical EngineeringMedium

Advantages of use of preheated combustion air are________?

AIncrease in flame temperature

BAll A., B. and C.

CReduction in scale losses

DSaving in fuel consumption

Correct answer

B. All A., B. and C.

Explanation

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

1802Chemical EngineeringMedium

Diffusion in concentrated solutions differs from that in dilute solutions, because of the change in the ________ with the concentration of the solution?

ABoth A & B

BNeither A nor B

CDegree of ideality

DViscosity

Correct answer

A. Both A & B

Explanation

The correct answer is Both A & B.

1803Chemical EngineeringMedium

When an exothermic reversible reaction is conducted adiabatically, the rate of reaction________?

AContinuously decreases

BPasses through a maximum

CPasses through a minimum

DContinuously increases

Correct answer

B. Passes through a maximum

Explanation

The correct answer is Passes through a maximum.

1804Chemical EngineeringMedium

Pick out the exothermic reaction out of the following?

ACaC2 + H2O = Ca(OH)2 + C2H2

BAll (A), B. and (C)

CC + H2O = CO + H2

DMgCO3 = MgO + CO2

Correct answer

A. CaC2 + H2O = Ca(OH)2 + C2H2

Explanation

The correct answer is CaC2 + H2O = Ca(OH)2 + C2H2.

1805Chemical EngineeringMedium

Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E. (poly chloro tetra fluoro ethylene). It is also called ________?

AEpoxy resin

BTeflon

CSilicone rubber

DPolyurethane

Correct answer

B. Teflon

Explanation

The correct answer is Teflon.

1806Chemical EngineeringMedium

When a gas in a vessel expands, its internal energy decreases. The process involved is________?

AIrreversible

BAdiabatic

CIsothermal

DReversible

Correct answer

D. Reversible

Explanation

The correct answer is Reversible.

1807Chemical EngineeringMedium

The safe height (h) to diameter D. ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than ________?

A3.5

Correct answer

C. 1

Explanation

The correct answer is 1.

1808Chemical EngineeringMedium

Silicone rubber is not resistant to the corrosive action of________?

ASulphuric acid (10%)

BEther

CSulphuric acid (95%)

DBoth B. and C.

Correct answer

D. Both B. and C.

Explanation

The correct answer is Both B. and C..

1809Chemical EngineeringMedium

Work done may be calculated by the expression ∫ p dA for ________ processes?

AAdiabatic

BNeither A. nor B

CNon-flow reversible

DBoth A. and B

Correct answer

D. Both A. and B

Explanation

The correct answer is Both A. and B.

1810Chemical EngineeringMedium

In a single tank system, the transfer function of ________ to inlet flow rate is 1/(TS+1)?

ALevel

BNeither A. nor B.

CBoth A. & B.

DOutlet flow rate

Correct answer

D. Outlet flow rate

Explanation

The correct answer is Outlet flow rate.

1801Chemical EngineeringMedium

Advantages of use of preheated combustion air are________?

AIncrease in flame temperature

BAll A., B. and C.

CReduction in scale losses

DSaving in fuel consumption

Correct answer

B. All A., B. and C.

Explanation

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

1802Chemical EngineeringMedium

Diffusion in concentrated solutions differs from that in dilute solutions, because of the change in the ________ with the concentration of the solution?

ABoth A & B

BNeither A nor B

CDegree of ideality

DViscosity

Correct answer

A. Both A & B

Explanation

The correct answer is Both A & B.

1803Chemical EngineeringMedium

When an exothermic reversible reaction is conducted adiabatically, the rate of reaction________?

AContinuously decreases

BPasses through a maximum

CPasses through a minimum

DContinuously increases

Correct answer

B. Passes through a maximum

Explanation

The correct answer is Passes through a maximum.

1804Chemical EngineeringMedium

Pick out the exothermic reaction out of the following?

ACaC2 + H2O = Ca(OH)2 + C2H2

BAll (A), B. and (C)

CC + H2O = CO + H2

DMgCO3 = MgO + CO2

Correct answer

A. CaC2 + H2O = Ca(OH)2 + C2H2

Explanation

The correct answer is CaC2 + H2O = Ca(OH)2 + C2H2.

1805Chemical EngineeringMedium

Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E. (poly chloro tetra fluoro ethylene). It is also called ________?

AEpoxy resin

BTeflon

CSilicone rubber

DPolyurethane

Correct answer

B. Teflon

Explanation

The correct answer is Teflon.

1806Chemical EngineeringMedium

When a gas in a vessel expands, its internal energy decreases. The process involved is________?

AIrreversible

BAdiabatic

CIsothermal

DReversible

Correct answer

D. Reversible

Explanation

The correct answer is Reversible.

1807Chemical EngineeringMedium

The safe height (h) to diameter D. ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than ________?

A3.5

Correct answer

C. 1

Explanation

The correct answer is 1.

1808Chemical EngineeringMedium

Silicone rubber is not resistant to the corrosive action of________?

ASulphuric acid (10%)

BEther

CSulphuric acid (95%)

DBoth B. and C.

Correct answer

D. Both B. and C.

Explanation

The correct answer is Both B. and C..

1809Chemical EngineeringMedium

Work done may be calculated by the expression ∫ p dA for ________ processes?

AAdiabatic

BNeither A. nor B

CNon-flow reversible

DBoth A. and B

Correct answer

D. Both A. and B

Explanation

The correct answer is Both A. and B.

1810Chemical EngineeringMedium

In a single tank system, the transfer function of ________ to inlet flow rate is 1/(TS+1)?

ALevel

BNeither A. nor B.

CBoth A. & B.

DOutlet flow rate

Correct answer

D. Outlet flow rate

Explanation

The correct answer is Outlet flow rate.