alleryThe flame produced when a saturated hydrocarbon burns in plentiful air is:
AClean and blue
BSmoky and yellow
CGreen and bright
DBlack and dim
Answer & Solution
Correct answer: A. Clean and blue
1. Saturated hydrocarbons have higher C:H ratio favouring complete combustion.
2. Complete combustion gives a clean blue flame.
3. Unsaturated hydrocarbons or limited air give smoky yellow flames.
4. So the answer is clean and blue.
_Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_
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