Chemical Process MCQs

Question 1

The main use of HCl is in the

Accepted Answer

Drilling of petroleum wells and pickling of steel sheets

Answer

Manufacture of cationic detergent

Answer

Treatment of spent fuel of nuclear reactor

Answer

None of these

Question 2

The major use of butadiene is

Accepted Answer

In the manufacture of synthetic rubber

Answer

As a plasticiser for unsaturated polyester

Answer

As an anti-skinning agent in paint

Answer

None of these

Question 3

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Accepted Answer

Adjust the pH of the syrup

Answer

Remove the coloring matter from the syrup

Answer

Reduce the viscosity of the syrup

Answer

Improve the rate of crystallisation of sugar

Question 4

The most commonly used substance to speed up the sedimentation of sewage is

Accepted Answer

Lime

Answer

Sulphuric acid

Answer

Chlorine

Answer

Sodium bisulphite

Question 5

Thermoplastic materials

Accepted Answer

None of these

Answer

Do not soften on application of heat

Answer

Are heavily branched molecules

Answer

Are solvent insoluble

Question 6

Thermosetting materials

Accepted Answer

Are cross-linked molecules

Answer

Soften on application of heat

Answer

Are solvent soluble

Answer

None of these

Question 7

Thorium is mainly used

Accepted Answer

For the manufacture of gas mantles

Answer

As a fissile fuel in a nuclear reactor

Answer

In the manufacture of hydrogen bomb

Answer

In the treatment of cancer

Question 8

Styrene is produced from ethyl benzene by the process of

Accepted Answer

Dehydrogenation

Answer

Oxidation

Answer

Alkylation

Answer

Dehydration

Question 9

Styrene is produced from ethyl benzene by the process of

Accepted Answer

Dehydrogenation

Answer

Oxidation

Answer

Alkylation

Answer

Dehydration