Fuels And Combustion - Study Mode

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[#231] Carbon Content by weight in air dried wood may be about __________ percent.

(A) 10

(B) 25

(C) 50

(D) 80

Correct Answer

(C) 50

[#232] Volatile matter content in coking coal may be about __________ percent.

(A) 1

(B) 7

(C) 22

(D) 46

Correct Answer

(C) 22

[#233] Dry air required to burn 1 kg of carbon completely may be around __________ kg.

(A) 11

(B) 2

(C) 20

(D) 38

Correct Answer

(A) 11

[#234] Gobar gas is produced by the __________ of cown dung.

(A) Fermentation

(B) Oxidation

(C) Hydrogenation

(D) None of these

Correct Answer

(A) Fermentation

[#235] Efficiency of the combustion of a fuel is judged by the __________ the flue gas.

(A) % of CO 2 in

(B) % of O 2 in

(C) Temperature of

(D) Colour of

Correct Answer

(B) % of O 2 in