CBSE Class 8 Science Worksheet - Combustion and Flame Part A

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COMBUSTION AND FLAME

Name the following

1. The materials which produce heat energy on burning in air.

2. Ignition temperature of Phosphorous.

3. Mixture on which side of match box is coated.

4. Materials which exhibit slow combustion.

5. Any two substances which burst into flames when kept in air for some time.

6. A region of burning gases.

7. The coldest part of candle flame.

8. A fuel with least calorific value.

9. A gas produced during combustion which causes acid rain.

10. Any three examples of inflammable substances.

11. Any three examples of gaseous fuels.

12. Any three examples of solid fuels.

13. Different zones of candle flame.

14. Process of production of energy in sun.

Tick the correct answer :

1. For the combustion reaction temperature of contribute material should be

(i) Lower than the ignition temperature.

(ii) Higher than the ignition temperature.

(iii) Equal to the ignition temperature.

(iv) None of the above.

2. Which one is an example of combustible substance.

(i) Natural gas

(ii) Glass pieces

(iii) Iron nails

(iv) None of the above.

3. Who were the people who introduced match sticks?

(i) Indians

(ii) Americans


Please refer to attached file for CBSE Class 8 Science Worksheet - Combustion and Flame Part A

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