Chemical Process MCQs

Question 1

Solvent extracted oil

Accepted Answer

None of these

Answer

Has low free fatty acid content

Answer

Is odourless

Answer

Has more of unsaturates

Question 2

Pick out the wrong statement.

Accepted Answer

Acetylene gas can not be used for illumination purpose

Answer

Strongly caking coal should not be used in the Lurgi gasifier

Answer

Water gas is called blue gas because of the color of the flame, when it is burnt

Answer

Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels

Question 3

Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate

Accepted Answer

Is soluble in ammonium chloride and potassium chloride solution

Answer

Is prone to thermal decomposition

Answer

Has high water solubility and is unstable

Answer

All of the above

Question 4

Transparent soaps (e.g. Pears) are

Accepted Answer

Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

Answer

Metallic soaps with frothing agent and free stearic acid to achieve transparency

Answer

Metallic soaps with frothing agent from which glycerine has not been recovered

Answer

None of these

Question 5

Most widely and commonly used coagulant for the removal of suspended impurities in water is

Accepted Answer

Alum

Answer

Bleaching powder

Answer

Slaked lime

Answer

Copper sulphate

Question 6

Claude process of gas liquefaction employs

Accepted Answer

Adiabatic expansion against a piston or in a turbine

Answer

Merely compression of gas beyond its critical pressure

Answer

Joule-Thomson expansion cooling

Answer

Heat exchange with colder stream

Question 7

Linde process of gas liquefaction employs

Accepted Answer

Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

Answer

Exchange of heat with colder stream

Answer

Adiabatic expansion against a piston or in a turbine

Answer

Merely compressing the gas beyond its critical pressure

Question 8

Production of alcohol by fermentation of molasses is an __________ process.

Accepted Answer

Aerobic

Answer

Anaerobic

Answer

Endothermic

Answer

Both B and C

Question 9

Nickel is not used as a catalyst in the __________ reaction.

Accepted Answer

Shift conversion

Answer

Oil hydrogenation

Answer

Steaming reforming of naphtha

Answer

Ammonia cracking/dissociation