A reaction accompanied with the absorption of energy is:
Burning of a candle
Rusting of iron
Electrolysis of water
Digestion of food
Electrical energy is used to carry out electrolysis.
Which of the following does not involve a chemical reaction ?
(a) digestion of food in our body
(b) process of respiration
(c) burning of candle wax when heated
(d) melting of candle wax on heating
The burning of a candle is accompanied by the change of state.