Question

Smoke is produced due to

a.

insufficient supply of combustion air and insufficient time for combustion.

b.

poor quality of fuel and improper mixing of fuel & combustion air.

c.

poor design & overloading of furnace.

d.

all (a), (b) and (c).

Answer: (d).all (a), (b) and (c).

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Q. Smoke is produced due to

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