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Question: “Overfire burning” in a furnace is a phenomenon characterised by the
[A].

supply of excess fuel.

[B].

supply of excess air.

[C].

burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Gobar gas constitutes mainly of
[A].

CH4 & CO2

[B].

CO & CO2

[C].

CH4 & N2

[D].

CO & N2

Answer: Option A

Explanation:

No answer description available for this question.