Black smoke coming out of the chimney of a furnace is an indication of the use of ______________ in the furnace?

A. Low amount of excess combustion airCorrect Answer
B. Large quantity of excess combustion air
C. Hydrocarbon fuel
D. Pulverised coal as fuel
Correct Option: A. Low amount of excess combustion air

This question has been verified by the PakPrep community moderation network for competitive examination accuracy.

HomeCategoriesQuizSaved (0)Profile