The principal constituents of a fuel are
Carbon and hydrogen
Oxygen and hydrogen
Sulphur and oxygen
Sulphur and hydrogen
Answer
Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.
CO content
Dew point
CO₂ content
O₂ content
A fuel is substantce which release ______on combustion.
mechanical energy
magnetic energy
heat energy
chemical energy
A fuel is always react with_________during combustion and produced heat.
oxygen
water
nitrogen
carbon
During combustion__________always remains inert.
hydrogen