1. Tick the correct option:
(a) Which of the following fuels leaves a residue on burning?
(i) Petrol
(ii) LPG
(iv) CNG
(iii) Coal
Answers
Answered by
5
Answer:
coal
explanation:
coal combustion residue includes fly ash,bottom ash,boiler slag ang flue gas desulfurization . The process of ash formation is infuenced by chemical composition of mineral matter in coal and its thermal properties..
Answered by
1
Answer:
coal
Explanation:
because it doesn't react completely with oxygen and leaves carbon monoxide
and this carbon monoxide is very harmful
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