Which of the following is used as a coagulant in treating turbid water ?

Question: __________ is an ore concentrating metallurgical process involving a chemical change.
[A].

Electromagnetic separation

[B].

Froth floatation

[C].

Roasting

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and
[A].

sulphuric acid

[B].

phosphoric acid

[C].

hydrochloric acid

[D].

hydroflouric acid

Answer: Option A

Explanation:

No answer description available for this question.

Question: Oil is a/an
[A].

mixture of glycerides.

[B].

mixture of glycerides of fatty acids.

[C].

solid at normal temperature.

[D].

ester of alcohols other than glycerine.

Answer: Option B

Explanation:

No answer description available for this question.

Question: The amount of benzene present in pure benzol is about __________ percent.
[A].

30

[B].

50

[C].

70

[D].

90

Answer: Option C

Explanation:

No answer description available for this question.