Write a note on Sabatier and Senderens reaction.

Write a note on combustion of alkanes.

Describe any three methods for the preparation of aliphatic saturated hydrocarbons and their general chemical reactions.

How methane can be prepared? What are the chief properties of these compounds? Explain the statement "Methane is a saturated hydrocarbon."

How does methane react with halogens? Give the order of reactivity of halogens with alkanes and the order of reactivity of alkanes with halogens.

Explain isomerisation of alkanes with a suitable example.

Explain chain isomerism in alkanes with a suitable example.

Explain cracking of alkanes with a suitable example.