Write a short note on anamolous properties of the first element of p-block.

Describe briefly allotropism in p- block elements with specific reference to carbon.

Boron does not react directly with hydrogen. Suggest one method to prepare diborane from BF₃.

Give the uses of Borax

What is catenation ? describe briefly the catenation property of carbon.

Write a note on Fisher tropsch synthesis.

Give the structure of CO and CO₂.

What is oxo process?

What happens to CO₂ when dissolved in water?

Give the formula of chlorosilazanes. Explain its preparation from SiCI₄.

Name the building block of zeolites. Why zeolites have high porosity?

(i) Silicones are used for making waterproof fabrics. Give reason.
(ii) Diamond - bad conductor of electricity.

What is crystal field splitting?

Which one is more soluble in diethyl ether, anhydrous Alcl₃ or hydrated Alcl₃? Explain in terms of bonding.

Starting from SiCl₄, prepare the following in steps not exceeding the number given in parentheses.
(i) Silicon
(ii) Linear silicon containing methyl groups only
(iii) Na₂SiO₃