MCQs

Chemical Engineering MCQs with Explanations

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3201Chemical EngineeringMedium

In froth floatation, chemical agent added to cause air adherence is called________?

ACollector

BActivator

CModifier

DFrother

Correct answer

A. Collector

Explanation

The correct answer is Collector.

3202Chemical EngineeringMedium

Raw materials required for the manufacture of ________ is acetylene and hydrochloric acid?

ADacron

BVinyl chloride

CPhthalic anhydride

DMaleic anhydride

Correct answer

B. Vinyl chloride

Explanation

The correct answer is Vinyl chloride.

3203Chemical EngineeringMedium

Supporting legs of a plate and frame filter is normally made of________?

ACast iron

BHigh speed steel

CStainless steel

DWooden plank

Correct answer

A. Cast iron

Explanation

The correct answer is Cast iron.

3204Chemical EngineeringMedium

Refrigeration cycle________?

AViolates second law of thermodynamics

BBoth A. and B

CNeither A. nor B

DInvolves transfer of heat from low temperature to high temperature

Correct answer

D. Involves transfer of heat from low temperature to high temperature

Explanation

The correct answer is Involves transfer of heat from low temperature to high temperature.

3205Chemical EngineeringMedium

Pick out the wrong statement?

AOne kg mole of an ideal gas at N.T.P occupies 22400 Nm3

BVolume occupied by 9.034 x 1023 atoms of oxygen in ozone (O3) at NTP will be 11200 c.c

CTen times dilution of a normal solution (N) reduces its normality to N/10

DWhen equal weights of oxygen and methane are mixed in an empty reactor at room

Correct answer

A. One kg mole of an ideal gas at N.T.P occupies 22400 Nm3

Explanation

The correct answer is One kg mole of an ideal gas at N.T.P occupies 22400 Nm3.

3206Chemical EngineeringMedium

The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vaporised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is________?

A0.2

B0.8

C0.4

D0.6

Correct answer

D. 0.6

Explanation

The correct answer is 0.6.

3207Chemical EngineeringMedium

Starting raw material for the manufacture of Maleic anhydride is________?

ABenzene

Bn-butene

CNeither A. nor B.

DEither A. or B.

Correct answer

D. Either A. or B.

Explanation

The correct answer is Either A. or B..

3208Chemical EngineeringMedium

Water gas constitutes mainly of ________?

ACO2 & H2

BCH4 & H2

CCO & N2

DCO & H2

Correct answer

D. CO & H2

Explanation

The correct answer is CO & H2.

3209Chemical EngineeringMedium

In reverberatory furnace, charge is heated mainly by________?

ANatural convection

BNone of these

CConduction

DRadiation of heat from the roof of the combustion chamber

Correct answer

D. Radiation of heat from the roof of the combustion chamber

Explanation

The correct answer is Radiation of heat from the roof of the combustion chamber.

3210Chemical EngineeringMedium

Baffles may be eliminated for________?

AHigh viscosity liquids (> 600 poise)

BLow viscosity liquids (< 200 poise)

CNone of these

DLarge diameter tanks

Correct answer

A. High viscosity liquids (> 600 poise)

Explanation

The correct answer is High viscosity liquids (> 600 poise).

Refrigeration cycle________?

AViolates second law of thermodynamics

BBoth A. and B

CNeither A. nor B

DInvolves transfer of heat from low temperature to high temperature

Correct answer

D. Involves transfer of heat from low temperature to high temperature

Explanation

The correct answer is Involves transfer of heat from low temperature to high temperature.

Pick out the wrong statement?

AOne kg mole of an ideal gas at N.T.P occupies 22400 Nm3

BVolume occupied by 9.034 x 1023 atoms of oxygen in ozone (O3) at NTP will be 11200 c.c

CTen times dilution of a normal solution (N) reduces its normality to N/10

DWhen equal weights of oxygen and methane are mixed in an empty reactor at room

Correct answer

A. One kg mole of an ideal gas at N.T.P occupies 22400 Nm3

Explanation

The correct answer is One kg mole of an ideal gas at N.T.P occupies 22400 Nm3.