Question

Objective Questions
Choose the correct option.
1. Which of the following is not a reversible change?
(b) The melting of iron
(a) The change of water into water vapour
(d) The burning of kerosene
(c) The condensation of water vapour
2. Which of the following is a desirable change?
(a) The rotting of an egg
(b) The spoiling of food
(c) The digestion of food
(d) The rusting of iron
2. During which of the following changes are new substances formed?
(a) Melting
(b) Sublimation
(c) Dissolution
(d) Burning
4. In which of the following processes does glucose react with oxygen?
(a) Sublimation
(b) Respiration
(c) Photosynthesis
(d) Rusting
5. In which of the following changes is energy derived from sunlight?
(a) The freezing of water
(b) Photosynthesis
(c) Sublimation
(d) Rusting​

Answer 1

Answer:

the burning of kerosene

Answer 2

Hi!

1) d) The burning of Kerosene

2) c) The digestion of food

3) d) Burning

4) b) respiration

5) b) Photosynthesis

Hope this helps