Question

State true or false. Correct the statement.
1. Sand is a non-combustible substance.
2. Combustion of LPG is an example of rapid combustion.
3. A substance cannot catch fire if its temperature is lower than its ignition
temperature.
4. Sunlight is an example of natural resource. T
5. The addition of undesirable substances to the air is called air pollution.
Unscramble the following words:
1. EXGONY - Combustion reaction which occurs on its own_BLO
2. EUBOIBTCSML - Diesel is this substance
1.
3. ELMFA - Substance which vapourises during burning gives
ED.
4. IOUUNLSM - Zone of incomplete combustion
5. RGUIBNN - It produces fire
*****
ASSIGNMENT - 3
COMBUSTION AND FUELS​

Answer 1

Answer:

first, five-question Answer is true

Answer 2

2. true

4. true

I just know these