A hydrocarbon compound burns with a non-luminous flame. Which hydrocarbon type does it indicate?
A
Alicyclic hydrocarbon
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B
Aromatic hydrocarbon
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C
Unsaturated hydrocarbon
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D
Acyclic hydrocarbon
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Solution
The correct option is C Aromatic hydrocarbon A non-luminous flame is colourless and is much hotter. A non-luminous flame undergoes complete combustion as it draws much more oxygen and gets much hotter. Saturated hydrocarbons generally gives a clean flame.
Aromatic hydrocarbon burns with a non-luminous flame.