MCQs

Chemical Engineering MCQs with Explanations

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2811Chemical EngineeringMedium

What is the speed of sound (m/sec) in ordinary water?

A3000

B330

C1000

D1500

Correct answer

D. 1500

Explanation

The correct answer is 1500.

2812Chemical EngineeringMedium

Salt content in sea water is about ________ percent?

A9.05

B0.5

C3.5

Correct answer

C. 3.5

Explanation

The correct answer is 3.5.

2813Chemical EngineeringMedium

Pick out the wrong statement?

AMolecularity of the reaction is always a whole number greater than zero

BVisible radiation provides the necessary activation energy in photochemical reactions

CFor a second order reaction, the slope of the graph/plot between rate and (concentration) is

DThe order and molecularity of a complex reaction may not be the same

Correct answer

D. The order and molecularity of a complex reaction may not be the same

Explanation

The correct answer is The order and molecularity of a complex reaction may not be the same.

2814Chemical EngineeringMedium

A belt conveyor used for the transportation of materials can________?

AHandle materials upto 5000 tons/hr

BTravel at a speed upto 300 metres/minute

CAll A., B. and C.

DRun upto 1 km

Correct answer

C. All A., B. and C.

Explanation

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

2815Chemical EngineeringMedium

Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3________?

ACO2 & H2SO4

BCO2 & KNO3

CHNO3 & limestone

DHNO3 & NH4Cl

Correct answer

C. HNO3 & limestone

Explanation

The correct answer is HNO3 & limestone.

2816Chemical EngineeringMedium

Otto cycle used in spark ignition petrol engines is also known as the constant ________ cycle?

APressure

BHeat

CNone of these

DVolume

Correct answer

D. Volume

Explanation

The correct answer is Volume.

2817Chemical EngineeringMedium

In deriving Bernoulli’s equation, fluid is assumed to be________?

ANone of these

BUniform, steady, incompressible, along a streamline

CSteady, density being pressure dependent, frictionless

DIncompressible, frictionless, steady, along a streamline

Correct answer

D. Incompressible, frictionless, steady, along a streamline

Explanation

The correct answer is Incompressible, frictionless, steady, along a streamline.

2818Chemical EngineeringMedium

Ammonia synthesis gas is produced from natural gas by________?

APartial oxidation

BHydrogenation

CSteam reforming

DThermal cracking

Correct answer

C. Steam reforming

Explanation

The correct answer is Steam reforming.

2819Chemical EngineeringMedium

With increase in temperature, the rate of leaching increases, because the________?

AThermal conductivity of solute increases

BDiffusivity of solute increases

CViscosity of solvent decreases

DNone of these

Correct answer

B. Diffusivity of solute increases

Explanation

The correct answer is Diffusivity of solute increases.

2820Chemical EngineeringMedium

Any substance above its critical temperature exists as ________?

ALiquid

BGas

CSaturated vapour

DSolid

Correct answer

B. Gas

Explanation

The correct answer is Gas.

Pick out the wrong statement?

AMolecularity of the reaction is always a whole number greater than zero

BVisible radiation provides the necessary activation energy in photochemical reactions

CFor a second order reaction, the slope of the graph/plot between rate and (concentration) is

DThe order and molecularity of a complex reaction may not be the same

Correct answer

D. The order and molecularity of a complex reaction may not be the same

Explanation

The correct answer is The order and molecularity of a complex reaction may not be the same.

In deriving Bernoulli’s equation, fluid is assumed to be________?

ANone of these

BUniform, steady, incompressible, along a streamline

CSteady, density being pressure dependent, frictionless

DIncompressible, frictionless, steady, along a streamline

Correct answer

D. Incompressible, frictionless, steady, along a streamline

Explanation

The correct answer is Incompressible, frictionless, steady, along a streamline.