Chemical Process - Chemical Engineering Questions and Answers

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Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

-5 to 0

5 to 10

30 to 50

75 to 80

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Brackish water which contains mostly dissolved salt, can be purified by the __________ process.

reverse osmosis

sand filter

lime soda

permutit

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Major component of flint glass is

lead oxide

silica

alumina

soda

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Gypsum is chemically

calcium chloride

potassium sulphate

sodium sulphate

calcium sulphate

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Calcination of gypsum produces

plaster of paris

salt cake

nitre cake

lime

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Phthalic anhydride is produced by the oxidation of

naphthalene

benzene

toluene

aniline

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Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.

flint

soda

pyrex

potash

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Zeigler process

produces high density polyethylene.

produces low density polyethylene.

uses no catalyst.

employs very high pressure.

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Massecuite is

used for paper making.

used as a cattle feed.

highly acidic in nature.

none of these.