Chemical Process - Chemical Engineering Questions and Answers

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Which of the following is not a pyrite ore?

Celestite

Galena

Gypsum

Siderite

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Which is the most efficient absorbant for SO₃ out of the following?

20% oleum

65% oleum

78%H₂SO₄

98%H₂SO₄

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Starting raw material for the manufacture of alum is

Alumina

Gypsum

Bauxite

Ammonium bicarbonate

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Frasch process is for

Making oxygen

Producing helium

Mining sulphur

Making nitrogen

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Very fine suspended and colloidal impurities are removed from water by a process called

Sedimentation

Coagulation

Disinfection

Softening

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Fumigant insecticides

Kill insects, when they eat it

Emit poisonous vapour

Are absorbed throughout the plant

None of these

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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

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Which of the following is a constituent of coffee?

Caffeine

Nicotine

Calgon

Lignin

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Which of the following is an endothermic reaction?

Absorption of SO₃ in 98% H₂SO₄

C + H₂O = CO + H₂

Thermal dissociation of iron pyrites

Both B and C