Which of the following constituents of a fuel does not contribute to its calorific value on combustion ?

Related Mcqs:

The hottest part of the flame lies in its _______________ zone?

A. Non-luminous B. Luminous C. Yellow D. Unburnt gases...

Coke oven gas burns with a yellowish flame, because of the presence of __________________?

A. CO2 B. CH4 C. H2 D. NH3...

Which of the following combustibles is absent in blast furnace gas ?

A. H2 B. CH4 C. CO D. None of these...

For long flame and easy ignition, the coal used should have_________________?

A. High volatile matter B. Low ash C. High calorific value D. High ash...

Use of excess of combustion air in the combustion of fuels results in__________________?

A. Heat losses B. Long flame C. Condensation of water vapour from the fuel gas D. None of these...