Chemical Process MCQs

Question 1

__________ are added in lacquers to remove film brittleness and to improve adhereness.

Accepted Answer

Plasticisers

Answer

Film forming materials

Answer

Diluents

Answer

Solvents

Question 2

Temporary hardness of water can be removed by

Accepted Answer

Boiling

Answer

Addition of alum (a coagulant)

Answer

Filtration (through gravity sand filter)

Answer

Addition of lime

Question 3

Permanent hardness of water can be removed by

Accepted Answer

Passing it through cation & anion exchangers

Answer

Simply boiling

Answer

Adding alum

Answer

All of the above

Question 4

Permanent hardness of water can be removed by

Accepted Answer

Boiling it with Na2CO3

Answer

Boiling

Answer

Adding Ca(OH)2

Answer

None of these

Question 5

Permanent hardness of water can be removed by

Accepted Answer

All of the above

Answer

Addition of soda ash to it

Answer

Treating it with zeolites

Answer

Passing it through sodium hexametaphosphate

Question 6

Esterification reaction

Accepted Answer

All of the above

Answer

Produces soap

Answer

Is reversible

Answer

Is a reaction between an alcohol and an organic acid

Question 7

Polymethyl methacrylate (PMMA) is known as

Accepted Answer

Perspex

Answer

Bakelite

Answer

Teflon

Answer

Nylon-6

Question 8

The process used for the manufacture of ethyl alcohol from molasses is

Accepted Answer

None of these

Answer

Distillation

Answer

Dehydration

Answer

Dehydrogenation

Question 9

Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.

Accepted Answer

Vinyl chloride

Answer

Phthalic anhydride

Answer

Maleic anhydride

Answer

Dacron