What are elastomers ? Give the chemical equation for the preparation of Buna-S.

What are copolymers ? Give the chemical equation for the preparation of terylene.

What is an elastomer?

(a) What are silicones ? States the uses of silicones (b) What are boranes ? Give chemical equation for the preparation of diborane.

Give the equation for the lab preparation of hydrogen.

What are Grignard reagents? Give a chemical reaction for their preparation

Give chemical equation for the preparation of ethyne from 1,2-dibromethane.

What are the limitations of a chemical equation ?

Give two chemical methods for the preparation of colloidal solutions.

Give the chemical equations for the following: Combustion of ammonia.

What are polyolefins ? Give the reaction for the preparation of polythene, a polyolefin.