MCQs

Chemical Engineering MCQs with Explanations

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2801Chemical EngineeringMedium

Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?

ANitrogenous fertilizer

BPotassic fertilizer

CNone of these

DPhosphatic fertilizer

Correct answer

A. Nitrogenous fertilizer

Explanation

The correct answer is Nitrogenous fertilizer.

2802Chemical EngineeringMedium

In ________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed?

AClaude

BFauser-Montecatini

CUhde

DKellogg

Correct answer

A. Claude

Explanation

The correct answer is Claude.

2803Chemical EngineeringMedium

For water-ethanol system, the minimum reflux ratio________?

ACannot be computed

BIs computed from the slope of the upper operating line that is tangent to the equilibrium curve

CIs computed from the intercept of the operating line

DIs the optimum reflux ratio

Correct answer

B. Is computed from the slope of the upper operating line that is tangent to the equilibrium curve

Explanation

The correct answer is Is computed from the slope of the upper operating line that is tangent to the equilibrium curve.

2804Chemical EngineeringMedium

Firing of refractory brick is done to ________?

ADevelop stable mineral forms in them

BForm ceramic bonds necessary for development of high crushing strength in the finished

CAll A., B. and C.

DDehydrate the dried refractory

Correct answer

C. All A., B. and C.

Explanation

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

2805Chemical EngineeringMedium

Which of the following thermocouples has the least temperature measurement range?

ACopper-constantan

BPlatinum-platinum/rhodium

CIron-constantan

DChromel-alumel

Correct answer

A. Copper-constantan

Explanation

The correct answer is Copper-constantan.

2806Chemical EngineeringMedium

Cartridge filters are termed as ‘edge’ filters, because of the fact that the________?

ANone of these

BBulk of the solids are removed at the periphery of the disks

CDisks have very sharp edge

DSolids are not deposited at the edge of the disk

Correct answer

B. Bulk of the solids are removed at the periphery of the disks

Explanation

The correct answer is Bulk of the solids are removed at the periphery of the disks.

2807Chemical EngineeringMedium

Joining of thin foils is preferred to be done by ________?

AX-rays

BGamma rays

CMicrowaves

DGas welding

Correct answer

C. Microwaves

Explanation

The correct answer is Microwaves.

2808Chemical EngineeringMedium

Annual depreciation costs are constant, when the ________ method of depreciation calculation is used?

ASum of the years digit

BStraight line

CNone of these

DDeclining balance

Correct answer

B. Straight line

Explanation

The correct answer is Straight line.

2809Chemical EngineeringMedium

Pick out the wrong statement?

AA loop seal or U-seal is provided in a vertical condenser sub-cooler to prevent quick draining

BSafety valves are provided in heat exchangers for removal of non-condensable

CLiquid metals and Dowtherm are used for very high temperature heating

DIn a shell and tube heat exchanger, high pressure fluid is generally routed through the tube

Correct answer

B. Safety valves are provided in heat exchangers for removal of non-condensable

Explanation

The correct answer is Safety valves are provided in heat exchangers for removal of non-condensable.

2810Chemical EngineeringMedium

Which one of the following is incombustible?

BCCl4

CC2H2

DH2

Correct answer

B. CCl4

Explanation

The correct answer is CCl4.

For water-ethanol system, the minimum reflux ratio________?

ACannot be computed

BIs computed from the slope of the upper operating line that is tangent to the equilibrium curve

CIs computed from the intercept of the operating line

DIs the optimum reflux ratio

Correct answer

B. Is computed from the slope of the upper operating line that is tangent to the equilibrium curve

Explanation

The correct answer is Is computed from the slope of the upper operating line that is tangent to the equilibrium curve.

Cartridge filters are termed as ‘edge’ filters, because of the fact that the________?

ANone of these

BBulk of the solids are removed at the periphery of the disks

CDisks have very sharp edge

DSolids are not deposited at the edge of the disk

Correct answer

B. Bulk of the solids are removed at the periphery of the disks

Explanation

The correct answer is Bulk of the solids are removed at the periphery of the disks.

Pick out the wrong statement?

AA loop seal or U-seal is provided in a vertical condenser sub-cooler to prevent quick draining

BSafety valves are provided in heat exchangers for removal of non-condensable

CLiquid metals and Dowtherm are used for very high temperature heating

DIn a shell and tube heat exchanger, high pressure fluid is generally routed through the tube

Correct answer

B. Safety valves are provided in heat exchangers for removal of non-condensable

Explanation

The correct answer is Safety valves are provided in heat exchangers for removal of non-condensable.