Question

The hydrogen and oxygen gas can be obtained from water by
(i) Its thermal decomposition
(ii) Electrolytic decomposition
(iii) Decomposition due to sunlight (iv) Any of these
which alucose is burnt to gener​

Answer 1

Answer:

answer is 2

electrolytic decomposition

Answer 2

Answer: Hydrogen  and  oxygen  gas  can  be  obtained from  water by Electrolytic decomposition.

 Therefore, the correct answer is (ii) Electrolytic decomposition.

Explanation:

2H2O (l) -------->2H2(g)+O2(g)

Equilibrium  of  water:-

H2O<----->OH+ H

Cathode  reactions:-

2H+ 2e------>2H2

Anode oxidation:-

2H2O--->O2+2H+4e

Overall  reactions:-

2H2O--->O2+2H2

This is the best answer and also will help you to know how the decomposition reactions occurs.

Please mark this answer brainliest.

                                    Thank you.