Question

3. the gas used in combustionis. (b) oxygen
(c) nitrogen
(d) sulphur
(b) explosion
(d) none of thes
4. Burning of LPG is an example of :
(a) rapid combustion
(c) spontaneous combustion
5. Combustion is:
(a) natural process
(c) physical process
6. LPG is :
(a) liquid fuel
(b) gas fuel
7. The work of fire extinguisher is :
(a) cut off the supply of air
(c) provide carbon dioxide
(b) chemical process
(d) none of these
(c) solid fuel
(d) none of
(b) provide oxygen
(d) none of these​

Answer 1

Answer:

3) oxygen

4) rapid combustion

5) it is chemical process

6) Liquefied petroleum gas

7) none of these

Answer 2

Answer:

oxygen, liquid fuel ,provide carbondioxide