Chemical Engineering

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.

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.