Question

A. Tick (~) the correct option:
1. A good fuel must be :
a. Expensive
b. Incombustible c. Non-polluting
d. Difficult to store
2. The hottest part of the flame is :
a. Innermost part
b. Outermost part
c. Middle part
d. None of these
3. Combustion takes place in the presence of :
a. Oxygen
c. Nitrogen
d. Hydrogen
4. It is a combustible substance :
a. Wood
b. Glass
c. Steel
d. Nylon
5. The temperature at which a substance first starts burning is called :
b. Inflammable substances
a. Ignition temperature
d. Combustible substances
c. Flammable substance
b. Co​

Answer 1

Answer:

1.non polluting option .c

Answer 2

Answer:

here's your answer dude