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Question: Gross and net calorific value of a fuel will be the same
[A].

if its ash content is zero.

[B].

ifits carbon content is very low.

[C].

if its hydrogen/hydrogen compound content is zero.

[D].

under no circumstances.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Calorific value of furnace oil is about __________ Kcal/kg.
[A].

10000

[B].

15000

[C].

5000

[D].

20000

Answer: Option A

Explanation:

No answer description available for this question.

Question: Calorific value of tar is about __________ Kcal/kg.
[A].

8800

[B].

12000

[C].

5000

[D].

16000

Answer: Option A

Explanation:

No answer description available for this question.

Question: Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
[A].

1000

[B].

4000

[C].

6000

[D].

8000

Answer: Option B

Explanation:

No answer description available for this question.

Question: Naphthalene is used for making
[A].

insecticides (e.g. moth balls).

[B].

unsaturated polyesters.

[C].

drug intermediates e.g. β-naphthol.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Yield of pitch from distillation of high temperature tar is around __________ percent.
[A].

10

[B].

25

[C].

65

[D].

90

Answer: Option C

Explanation:

No answer description available for this question.

Question: Benzol is used
[A].

as a motor fuel blend.

[B].

for producing benzene, tolune & xylene by its distillation.

[C].

both (a) & (b).

[D].

neither (a) nor (b).

Answer: Option C

Explanation:

No answer description available for this question.

Question: Hard pitch is used for making
[A].

pulverised fuel

[B].

perfumes

[C].

insecticides

[D].

plastics

Answer: Option A

Explanation:

No answer description available for this question.

Question: Benzene is used
[A].

as a motor fuel.

[B].

as an explosive.

[C].

for making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR).

[D].

as a perfume.

Answer: Option C

Explanation:

No answer description available for this question.