1000+ Fuels and Combustion Interview Questions and Answers - 1

Question: 1

Lignite is

(A) can be used for gasification and steam generation

(B) a black banded coal which burns with a non smoky yellowish flame

(C) a coking coal

(D) a high rank coal

Question: 2

Higher efficiency in the combustion of solid fuel can not be achieved by

(A) adopting efficient fuel firing technique and equipment

(B) supplying correct quantity of combustion of air

(C) proper fuel preparation

(D) keeping the flue exhaust temperature very high

Question: 3

Which of the following is called ‘blue gas’?

(A) producer gas

(B) natural gas

(C) water gas

(D) coke oven gas

Question: 4

In salt bath furnace, heat is transferred to the charge mainly to

(A) radiation

(B) conduction

(C) convection

(D) none of these

Question: 5

_____ present is not determined in its ultimate analysis.

(A) Nitrogen

(B) Hydrogen

(C) Total carbon

(D) Fixed carbon