State the function of conc. sulphuric acid in the laboratory preparation of carbon monoxide from oxalic acid.

Give reasons why carbon monoxide is considered a highly poisonous gas. State why it is dangerous

(i) To sleep in a closed room with a fuel burning

(ii) To be in the vicinity of smokers

State how carbon monoxide finds application in

(i) The metallurgy of iron

(ii) Preparation of an alcohol.

[Give balanced equations for the same]

Name the following:

1. A crystalline allotrope of carbon built up from a hexagonal unit.

2. An allotrope of carbon used for the manufacture of coke.

3. An amorphous allotrope of carbon which floats on water.

4. An acid formed when carbon dioxide is dissolved in water under pressure.

5. The gaseous product obtained when carbon monoxide is passed over heated iron [III] oxide.