Class 8 Science Chapter 6 Combustion And Flame Quiz 10 (12 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Essential requirements for producing fire are

Correct Answer: D) All of these.

2. What is the combustion of the blue in the gas flame?

Correct Answer: A) Hydrogen.

3. Which is the hottest part in the candle flame?

Correct Answer: D) Blue.

4. For fires involving oil and petrol, which fire extinguisher will be suitable?

Correct Answer: C) Carbon dioxide.

5. The total amount of heat or energy produced by one kg of fuel is the

Correct Answer: B) Net calorific value (NCV).

6. An example of spontaneous combustion is cold dust, forest fire which is

Correct Answer: B) False.

7. A temperature at which the substance burns is called

Correct Answer: C) Ignition temperature.

8. On the basis of the combustion, classify the substance

Correct Answer: C) Both of these.

9. Magnesium burns to form

Correct Answer: B) Magnesium oxide.

10. A good fuel is on which is

Correct Answer: D) All of these.

11. Substances which have very low ignition temperature and can catch fire easily are called

Correct Answer: B) Inflammable substances.

12. Which is non combustible substance?

Correct Answer: D) Iron nails.