Question

1. The substances that undergo combustion are called ____________ substances.

2. Presence of a _________ of combustion is necessary for combustion.

3. ____________ and ____________ cannot be burnt.

4. _________ burns in air spontaneously, as its ignition temperature is 35°C only.

5. Colour of the candle flame is ____________.

6. ____________is the hottest part of the candle flame.

7. ____________ are the fuels that exist as liquid at room temperature.

8. ____________ is the rise in temperature of the atmosphere of the earth.​

Answer 1

Answer:

flammable

oxygen

carbon dioxide and