Chemical Process MCQs

Question 1

Plasticisers are added to synthetic plastics to

Accepted Answer

All of the above

Answer

Impart flexibility

Answer

Improve workability during fabrication

Answer

Develop new improved properties not present in the original resins

Question 2

Main constituent of dolomite is

Accepted Answer

MgCO3

Answer

CaCO3

Answer

K2CO3

Answer

Na2CO3

Question 3

The major constituents of glass are

Accepted Answer

Sand, lime and soda ash

Answer

Lime, clay and soda ash

Answer

Silica, alumina and clay

Answer

Silica, alumina and soda ash

Question 4

Bakelite is chemically known as

Accepted Answer

Phenol formaldehyde

Answer

Polyvinyl chloride (PVC)

Answer

Polybutadiene

Answer

Polyurathane

Question 5

__________ nature of hypo (sodium thiosulphate) makes it useful in photography.

Accepted Answer

Complex forming

Answer

Oxidising

Answer

Reducing

Answer

Photochemical

Question 6

Sizing material is incorporated in paper to

Accepted Answer

Impart resistance to penetration by liquids

Answer

Increase its thickness

Answer

Increase its flexibility & opacity

Answer

Increase its brightness

Question 7

Chemical name of Grignard reagent is

Accepted Answer

Ethyl magnesium chloride

Answer

Sodium thiosulphate

Answer

Sodium sulphite

Answer

Sodium bicarbonate

Question 8

In industrial nomenclature, alcohol means

Accepted Answer

Ethanol

Answer

Butyl alcohol

Answer

Propyl alcohol

Answer

Methyl alcohol

Question 9

Addition of calcium oxide to water produces

Accepted Answer

All of the above

Answer

Exothermic heat

Answer

Hissing sound

Answer

Slaked lime