Question

Q.1
Fill in the blanks:-
1.) On heating in air, coal mainly produces__________ gas.
2.)_________is an almost pure form of carbon.
3.) Coal tar is a mixture of about________ substance..
4.) Now a days_______, a petroleum product is used in place of__________ for metal ling the roads.
5.)________is used as a fuel in light automobiles whereas heavy motor vehicles run on_______.​

Answer 1

Answer:

Carbon dioxide

fullerenes

Coal tar is a complex mixture of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. It is a keratolytic agent, which reduces the growth rate of skin cells and softens the skin's keratin.

Answer 2

Answer:

1. Co2

2. Fullerenes

3. various

4. bitumen , coal

5. petrol , diesel