Question

Different zones of a candle
flame are marked by the letters
P, Q, R and S.
Which of the following
statements are correct?
(i) P is the luminous zone
and is the hottest part of
candle flame.
In zone Q, there is
inadequate supply of
oxygen.
(iii) Zone R contains unburnt wax vapours
produced by melting of wax.
(iv) In S zone, carbon monoxide burns
with a blue flame.
​

Answer 1

(i)the outer part of flame

(ii) I don't know

(III) innermost part

(4) I don't know