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Question: Lime and soda ash are added to water to remove
[A].

bicarbonates & sulphates of calcium and magnesium.

[B].

undersirable taste and odour.

[C].

bacteria.

[D].

its corrosiveness.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Zeolite used in water softening process (cation exchange) is regenerated by washing with
[A].

brine

[B].

chloramines

[C].

sodium bisulphite

[D].

liquid chlorines

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cumene is the starting material for the production of
[A].

benzoic acid

[B].

phenol and acetone

[C].

isoprene

[D].

styrene

Answer: Option B

Explanation:

No answer description available for this question.

Question: Glycerine can be obtained from
[A].

fat

[B].

naphthalene

[C].

cumene

[D].

sucrose

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cumene (isopropyl benzene) is made by
[A].

oxidation of napthalene.

[B].

propylene alkylation of benzene.

[C].

polymerisation of a mixture of benzene & propylene.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Celluloid is chemically
[A].

cellulose acetate

[B].

regenerated cellulose

[C].

cellulose nitrate

[D].

cellulose acetate butyrate

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dacron is a/an
[A].

polyester

[B].

unsaturated polyster

[C].

polyamide

[D].

inorganic polymer

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nylon 6-6 is manufactured from
[A].

hexamethylene diamine and adipic acid.

[B].

hexamethylene diamine and maleic anhydride.

[C].

caprolactum.

[D].

dimethyl terephthalate and ethylene glycol.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nylon-6 is manufactured from
[A].

caprolactum.

[B].

hexamethylene diamine and adipic acid.

[C].

hexamethylene diamine and maleic anhydride.

[D].

hexamethylene diamine and sebacic acid.

Answer: Option A

Explanation:

No answer description available for this question.