Black smoke coming out of the chimney of a furnace is an... — Answer & Explanation | PrepBeePakistan

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HomeMCQsChemical Engineering

MEDIUMENGLISHChemical Engineering

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

Correct answer: A

Explanation

Black smoke means incomplete burning. This happens when there is not enough air (excess combustion air) to burn all the fuel completely.

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