7000+ Fuel System Questions and Answers Pdf - 1

Question: 1

Chemical inhibitor that minimizes caustic embrittlement of industrial boilers is

(A) Calcium chloride

(B) Ferric sulphate

(C) Sodium sulfate

(D) Sodium nitrate

Question: 2

Gobar gas is generated by the _____ of cow dung.

(A) Hydrogenation

(B) Hydrolysis

(C) Oxidation

(D) Fermentation

Question: 3

Which of the following has the highest theoretical flame temperature?

(A) Acetylene

(B) Blast furnace gas

(C) Coke oven gas

(D) Hydrogen

Question: 4

Combustion of large size and irregular lump coal does not result in higher

(A) Thermal efficiency

(B) Stack loss

(C) Excess air requirement

(D) Unburnts in the ash

Question: 5

Preheating of gaseous fuels results in increased

(A) Ignition temperature

(B) Quantum of flue gas

(C) Flame length

(D) Flame temperature