Combustion and Flame-Fire [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 5 of 5

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Question 1

Question MCQ▾

A device used to stop fire is called:

Choices

Choice (4)Response

a.

Rapid combustion

b.

Sand bucket

c.

Ideal fuel

d.

Fire extinguisher

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Question 2

Question MCQ▾

Fire extinguishers used at airports and petrol pumps based on the principle of:

Choices

Choice (4)Response

a.

Smothering the fire

b.

Cooling the fire

c.

All of the above

d.

Question does not provide sufficient data or is vague

Edit

Question 3

Question MCQ▾

Soda acid fire extinguisher based on the principle of:

Choices

Choice (4)Response

a.

Smothering the fire

b.

Cooling the fires

c.

Question does not provide sufficient data or is vague

d.

All of the above

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Question 4

Question MCQ▾

Types of fire that cannot be controlled by throwing water are:

Choices

Choice (4)Response

a.

Fire produced by burning of oil or petrol

b.

Fire produced by crackers

c.

Fire produced by electric short circuit

d.

Both a. and c. are correct

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Question 5

Question MCQ▾

Fire can be controlled by:

Choices

Choice (4)Response

a.

Presence of combustible substance

b.

If any of the condition require for combustion are not met then fire can be extinguished

c.

Presence of supporter of combustion (oxygen of air)

d.

Attainment of proper ignition temperature

Edit