Question

two reasons non luminous flame is used for heating

Answer 1

Explanation:

Combustion efficiency

Combustion efficiencyEfficient combustion relies on the complete combustion of the fuel. Production of soot represents a waste of fuel (the soot could have been burned further) and may also be a problem for its build-up around jets and burners. Heating burners are thus usually designed to produce a non-luminous flame.

Answer 2

Answer:

The “luminous Bunsen flame” should not be used for a flame test, the clear blue 'non-luminous flame' should be used, because: ... The air-starved, fuel-rich, incandescent carbon soot filled luminous flame is a chemically different test environment than