Question

important questions of carbon compound because its a very lengthy chapter​

Answer 1

You won't understand these questions and will end up mugging up. You should learn (read) it thoroughly if you wanna score good. Else I can't ensure good marks because it's a high weightage chapter.
However some heavy topics are:
1) Versatile nature of Carbon,
1.1) Hydrocarbons and their types.
2) Isomerism,
3) Nomenclature,
4) Soaps & Detergents,
5) Reactions of Ethyl Alcohol and Carboxylic acid
6) Formation of Ethanol,
7) Types of Open chain reactions.

Answer 2

1. Sops&detergents

2. Unsaturated&saturated

hydro carbons

3.substition-combibation-addition reactions

4. isomerisms

5. graphite