Question

21. Match the given columns.
Column A
1. Physical changes
2. Copper sulphate
3. Iron
4. Carbon
5. Spoilage of food
6. Magnesium hydroxide
Column B
(i) Reacts with sulphur
(ii) Irreversible
(iii) No new substance is formed
(iv) Turns red litmus paper blue
(v) Reacts with zinc
(vi) Oxygen and water
Column C
(a) Rust
(b) Chemical change
(c) Basic in nature
(d) Generally reversible
(e) Zinc sulphate is formed
(f) Endothermic reaction​

Answer 1

Explanation:

you have 3 columns....? I dont understand this match the following question .... how to do this ?