Question

Answer me faster guys.......
this will your big help...​

Answer 1

Answer:

on the basis of heating

Explanation:

CaCO3 when heated in a test tube quicklime CaO is formed and CO2 gas is evolved in this process

On the basis of electricity

Electrolysis of water In this process take a beaker and pour some water also a small amount of acid in it . Two graphite rods used as electrodes . And these electrodes are connected with a source of battery. On passing the electricity hydrogen H2 gas is released at cathode and oxygen gas O2 is released at anode

2H2O on electrolysing gives 2H2 (gas) + O2 (gas)

On the basis of light :

When silver bromide exposed in sunlight it changes to grey in colour.

Silver bromide (yellow) 2AgBr on keeping in sunlight gives silver (grey colour) 2Ag + Br2

Hope it will help you