Chemical Process - Chemical Engineering Questions and Answers

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90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.

10-30

250-280

500-600

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Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.

drying

semi-drying

non-drying

none of these

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Fats as compared to oils have

more unsaturated glycerides of fatty acids.

less unsaturated glycerides of fatty acids.

much higher reactivity to oxygen.

lower melting point.

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Thermal pyrolysis of ethylene dichloride produces

trichloroethylene

vinyl chloride

ethanol amine

ethylene oxide

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The main component of pyrex glass is

zinc

lead

boron

celenium

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Alum [Al₂(SO₄)₃] is used as a coagulant in water treatment to remove

colour

turbidity

bacteria

all (a), (b) and (c)

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__________ is an ore concentrating metallurgical process involving a chemical change.

Electromagnetic separation

Froth floatation

Roasting

none of these

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Basic oxide is absent in __________ glass.

flint

pyrex

quartz

all (a), (b) & (c)

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Graphite is a/an

electrical insulator.

allotrope of carbon.

moderator used in nuclear reactor.

both (b) and (c).