Chemical Process - Chemical Engineering Questions and Answers

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Bakelite is

Same as poly tetrafluoroethylene (PTFE)

An inorganic polymer

Same as thermosetting phenol-formaldehyde

Not a polymer

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Presence of H₂S in raw water (to be chlorinated) results in the

Reduced softening capacity of zeolite

Increased dosage of chlorine to provide a disinfecting residual in the water

Easy removal of its hardness

None of these

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Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of

Carbon

Arsenic

Lead

Sulphur

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The temperature in the calcium carbide furnace is __________ °C.

200-300

700-850

2000-2200

4000-4500

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Bio-degradable detergents

Can be readily oxidised

Pose problem in sewerage plant

Have an isoparaffinic structure

Should not be used as it spoils the cloth

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Bitterns is a/an

Unsaturated fat

Starting material for the production of iodine

By-product of chlor-alkali industry

None of these

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Which is the most suitable dye for synthetic fibres?

Acid dye

Azoic dye

Pigment dye

Mordant dye

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Blue vitriol is chemically

Copper sulphate

Ferrous sulphate

Copper nitrate

Aluminium sulphate

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Presence of carbonaceous matter in the sewage

Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures

Reduces sulphate ions to sulphides causing obnoxious smell

Increases the quantity of chlorine used for its purification

All of the above