Which of the following is not produced commercially from sea water ?

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

colour

[B].

turbidity

[C].

bacteria

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
[A].

10

[B].

50

[C].

80

[D].

95

Answer: Option B

Explanation:

No answer description available for this question.

Question: Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.
[A].

15-30

[B].

90-100

[C].

250-300

[D].

<0

Answer: Option A

Explanation:

No answer description available for this question.

Question: Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
[A].

has larger production capacity per unit cell.

[B].

consumes less power per ton of Cl2 produced.

[C].

produces high purity (70%) caustic soda directly.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Adipic acid is an intermediate in the manufacture of
[A].

perspex

[B].

nylon-66

[C].

polystyrene

[D].

bakelite

Answer: Option B

Explanation:

No answer description available for this question.