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Combustion and Flame — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame1 Mark
MCQ
What does the blue zone in an $L.P.G.$ flame indicate?
  • ✓
    Unburnt vapours.
  • B
    Partial decomposition.
  • C
    Moderately hot.
  • D
    Hottest zone of complete combustion.
✓

Answer

Correct option: A.
Unburnt vapours.

The blue zone in $L.P.G.$ flame indicates the hottest zone where complete combustion takes place.

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