CHEMICAL ENGINEERING

Question: Magnesium and calcium __________ cause temporary hardness of water.
[A].

carbonates

[B].

bicarbonates

[C].

phosphates

[D].

sulphates

Answer: Option B

Explanation:

No answer description available for this question.

Question: Isopropyl benzene produced by alkylation of benzene with propylene is known as
[A].

neoprene

[B].

cumene

[C].

gelatin

[D].

mercaptans

Answer: Option B

Explanation:

No answer description available for this question.

Question: Inversion of sucrose produces
[A].

fructose

[B].

glucose

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option B

Explanation:

No answer description available for this question.

Question: L.D. converter is used in the production of
[A].

pig iron

[B].

steel

[C].

copper

[D].

zinc

Answer: Option B

Explanation:

No answer description available for this question.

Question: Pencillin, an antibiotic drug was discovered by
[A].

Alexender

[B].

Flaming

[C].

Dr. Zivago

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Yeast is used in the manufacture of
[A].

pencillin

[B].

antibiotics

[C].

wine

[D].

pasteurised milk

Answer: Option C

Explanation:

No answer description available for this question.

Question: Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
[A].

brighten the faint images.

[B].

remove metallic silver.

[C].

convert silver chloride to silver.

[D].

remove unexposed silver halide.

Answer: Option D

Explanation:

No answer description available for this question.

Question: __________ of quicklime produces slaked lime.
[A].

Hydration

[B].

Dehydration

[C].

Hydrogenation

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ iron is the purest form of iron.
[A].

Cast

[B].

Wrought

[C].

Pig

[D].

High silicon

Answer: Option B

Explanation:

No answer description available for this question.

Question: Hard water
[A].

does not affect the lather formation by soap.

[B].

is not unfit for drinking purpose.

[C].

pollutes the water stream.

[D].

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

Answer: Option B

Explanation:

No answer description available for this question.