Which of the following gaseous fuels has the lowest calorific value ?

Question: The bright glow of a combustion process is the characteristic of __________ temperature oxidation of coal.
[A].

fast & high

[B].

slow & low

[C].

slow & high

[D].

fast & slow

Answer: Option A

Explanation:

No answer description available for this question.

Question: Lignite is
[A].

a high rank coal.

[B].

a coking coal.

[C].

can be used for gasification and steam generation.

[D].

a black banded coal which burns with a non-smoky yellowish flame.

Answer: Option C

Explanation:

No answer description available for this question.

Question: White flue gas (resembling steam) coming out of the chimney of a thermal power plant indicates that the fuel used in the boiler furnace is
[A].

tar

[B].

coke oven gas

[C].

pitch

[D].

pulverised coke

Answer: Option B

Explanation:

No answer description available for this question.