Question

Give an example of a chemical reaction for each of the following situations: [NCERT Exemplar]
(a) A change in colour is observed.
(b) A gas is evolved.
(c) Sound is produced.

Answer 1

Answer:

1. reaction between copper sulphate solution and zinc metal.

Explanation:

2. reaction between baking soda and vinegar. 3. burning of crackers. ( i hope its hlep u)