Global MCQ Practice

šŸŒ Total MCQ
šŸ  Homepage šŸ“˜ Download PDF Books šŸ“• Premium PDF Books

Class 8 Science Chapter 6 Combustion And Flame Quiz 5 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. The previously mentioned burning way or style is a type of combustion named as ..... Combustion.
2. Complete combustion is when there is plenty of oxygen to react with.
3. If a flame is giving off smoke, this type of combustion is occurring .....
4. An ideal fuel is cheap, readily available, easily combustible and easy to transport. It does not produce gases or residues that pollute the environment. Based on the above statements which of the following is closest to being an ideal fuel?
5. Which poisonous gas is formed as a result of incomplete combustion?
6. What substance turns into gas and burns?
7. Select the correct option which is suitable for the given below statement:The chemical used in mixture of modern matchsticks.
8. Combustion reaction of fuels is a/an ..... reaction.
9. The gas helpful in combustion is
10. Name the chemical process in which a substance reacts with oxygen to give out heat.
11. Bursting of crackers is an example of
12. Out of the following, Which of these are able to control fire
13. Burning of LPG is an example of ..... combustion.
14. Fuel may be
15. Which is the hottest part in flame of candle?
16. Moderately hot zone in a candle flame
17. What is the color of the flame that burns when magnesium burns?
18. Ideal fuel has ..... calorific value
19. Burning of coal and diesel releases an extremely suffocating and corrosive gas called:
20. Calorific value is measured in
21. The sun produces heat and light by .....
22. Digestion of food is an example of
23. Match column 1 and column 2 and select the correct option from the given codes.Column 1 Column2P. Rusting i. ExplosionQ. Burning of paper ii. Spontaneous CombustionR. Sodium iii. Rapid CombustionS. Fire Crackers iv. Slow combustion
24. Which one of the following gases is used in combustion?
25. Select the non combustible substance.
šŸ  Back to Homepage šŸ“˜ Download PDF Books šŸ“• Premium PDF Books