Question

Write true or false . Rewrite the false statements correctly . 1) Carbon burns in the presence of air to from carbon dioxide 2) In complete combustion , a lot of heat and light is produced . 3) Water is the best extinguisher for fires involving electrical equipments . 4) Alcohol , CNG and LPG are inflammable substances . 5) Greater the calorific value , better is the fuel . 6) Magnesium is a non - combustible metal . 7) Carbon dioxide is an excellent fire extinguisher

​

Answer 1

Answer:

1. False

2. True

3. False

4. True

5. True

6. False

7. True

Explanation:

1. Hydrocarbons burns and they give carbon dioxide

2. Yes, it's based on substance which undergoes combustion but, it releases heat and light

3. Of course it stops fire but it's not best and its too dangerous when electric equipments are involved

3. Yes, the above ones are inflammable because they catches fire

4. Yes, greater the colorific value or energy, better the fuel

5. No, it is combustible material, ex:magnesium ribbon

6. Yes, CO2 is best extinguisher because it cuts off O2 and puts off fire

Hope it helps you

Answer 2

Answer:

1. false

2.true

3.false

4.true

5.true

6.false

7.true