Methane burns in air to give carbon dioxide and water. Give a chemical equation . Show(State ) how the mixtures of these gases can be separated

Answer 1

We're still giving you freebies. Somewhere down the line you need to start telling us what you think and why or at least tell us what you don't understand about the problem.
CH4 + 2O2 ==> CO2 + 2H2O
The problem isn't clear about which gases to separate. I assume that means how to separate H2O and CO2 but one could have CO2, H2O, CH4 and O2.
The easiest way is to use a dehydrating agent(dehydrite is one on the market) to take out the water, then ascarite or similar material to absorb the CO2. Another way is to cool the gases; the H2O will condense and you could then freeze it. By the way, the reference to a freebie above has nothing to do with money. We NEVER charge for our help. The reference simply means you aren't having to work for this answer.