Question

True or false

1. During the process of burning, heat and energy are evolved.

2. Presence of a combination substance is one of the conditions necessary for combustion.

3. Water and sand are used to extinguish fire .

4. Combustion of wax takes place below it's ignition temperature.

5. The Ignition temperature of petrol is high .

6. The flame is the visible gaseous part of a fire .

7. The Innermost zone of a candle is is the light zone of a candle. ​

Answer 1

Answer:

1. true
2. false
3. true
4. true
5. false
6. true
7. false

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