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Question: Glycerine is not used in the
[A].

manufacture of explosive.

[B].

conditioning and humidification of tobacco.

[C].

manufacture of pharmaceuticals.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

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: Hydrogenation of oil takes place in a/an __________ reactor.
[A].

autothermal

[B].

trickle bed

[C].

plug flow

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
[A].

cause cholesterol build up and blood clotting.

[B].

are prone to rancid oxidation.

[C].

always contain some amount of nickel (as their complete removal is very difficult).

[D].

have affinity to retain harmful sulphur compounds.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Fats as compared to oils have
[A].

more unsaturated glycerides of fatty acids.

[B].

less unsaturated glycerides of fatty acids.

[C].

much higher reactivity to oxygen.

[D].

lower melting point.

Answer: Option B

Explanation:

No answer description available for this question.

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: Dechlorination of treated water is necessary to
[A].

remove residual turbidity.

[B].

reduce the bacterial load on filter.

[C].

control taste and odour.

[D].

remove chlorinous taste.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Deaeration of water in its treatment is necessary, as it
[A].

minimises its turbidity.

[B].

helps in controlling its taste and odour.

[C].

minimises its corrosiveness.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Chloramines are used in water treatment for
[A].

disinfection and control of taste & odour.

[B].

corrosion control.

[C].

removing turbidity.

[D].

control of bacteria.

Answer: Option A

Explanation:

No answer description available for this question.