Calcination of limestone is not done in a ______________ kiln for producing lime ?

Question: Glycerine is recovered from lye by
[A].

evaporation followed by vacuum distillation.

[B].

liquid extraction technique.

[C].

extractive distillation technique.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Nicotine is
[A].

a volatile alkaloid.

[B].

obtained by treating by-products of the tobacco processing industry.

[C].

both (a) and (b).

[D].

neither (a) nor (b).

Answer: Option C

Explanation:

No answer description available for this question.

Question: The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
[A].

dilute H2SO4

[B].

oleum

[C].

ultraviolet light

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Basic oxide is absent in __________ glass.
[A].

flint

[B].

pyrex

[C].

quartz

[D].

all (a), (b) & (c)

Answer: Option C

Explanation:

No answer description available for this question.