Rising of hot air over a radiator is a chemical or physical change? Give reason.

Q. Question 38
Classify each of the following, as a physical or a chemical change. Give reasons.
(a) Drying of a shirt in the sun.
(b) Rising of hot air over a radiator.
(c) Burning of kerosene in a lantern.
(d) Change in the colour of black tea on adding lemon juke to it.
(e) Churning of milk cream to get butter.

Q. Question 38
Classify each of the following, as a physical or a chemical change. Give reasons.
(a) Drying of a shirt in the sun.
(b) Rising of hot air over a radiator.
(c) Burning of kerosene in a lantern.
(d) Change in the colour of black tea on adding lemon juke to it.
(e) Churning of milk cream to get butter.