Chemical Process MCQs Archives

121. In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the

Diamine and the ring

Dibasic acid and the ring

Diamine and the dibasic acid

None of these

✅ The correct answer is option C.

122. Acrylonitrile is mainly used in the __________ industry.

Polymer

Printing

Dyeing

Photographic

✅ The correct answer is option C.

123. Fusel oil is a/an

Essential oil

Extract from medicinal herbs

Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)

None of these

✅ The correct answer is option C.

124. Percentage of glycerene present in the spent lye obtained during soap manufacture is about

0.5

✅ The correct answer is option B.

125. Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the __________ process.

Mechanical

Sulphate/kraft

Sulphite

Neutral sulphite semi-chemical

✅ The correct answer is option D.

126. Soap cannot be used with hard water, because

Hard water contains sulphate

They form insoluble calcium soaps which precipitate

They attract back the removed dirt

None of these

✅ The correct answer is option B.

127. Pick out the false statement pertaining to water treatment.

Aeration of water is effective in CO₂ removal

The zeolite water softening process reduces the hardness of water by not more than 50%

Sodium sulphate or sodium carbonate do not cause hardness in water

Water with pH value less than 7, is acidic

✅ The correct answer is option B.

128. Sucrose is a

Monosacchride

Disacchride

Polysacchride

None of these

✅ The correct answer is option B.

129. Digestion of wood-base materials (for manufacture of pulp) is done to

Remove lignin

Produce long fibres

Prevent deterioration on storage

None of these

✅ The correct answer is option A.

130. The type of high refractive index glass used in optical instruments is __________ glass.

Pyrex

Flint

Crookes

None of these

✅ The correct answer is option B.