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Fire Extinguisher

When clothes ...

Question

When clothes of a person catches fire, a blanket is used to extinguish it.

A

True

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B

False

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Solution

The correct option is A True
Fire can be controlled by eliminating any of the factors that support combustion. Factors that support combustion are:
- Presence of a combustible substance
- Supply of oxygen
- High ignition temperature
When clothes of a person catches fire, a blanket can be used as an extinguisher. Blanket cuts off the oxygen supply and puts off the fire.

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Q. Question 7
If a person’s clothes catch fire, the best way to extinguish the fire is to:

(a) Throw water on the clothes.
(b) Use fire extinguisher.
(c) Cover the person with a woollen blanket
(d) Cover the person with a polythene sheet.

Q. When clothes of a person catch fire, his body is covered with a blanket to __________.

If the clothes of a person working in the kitchen catch fire, then to extinguish the fire :

(a) sand should be thrown over the burning clothes

(b) water should be thrown over the burning clothes

(c) polyester blanket should be used to cover the burning clothes

(d) woollen blanket should be used to cover the burning clothes

When a person's clothes catch fire, he or she is wrapped in a thick blanket so as to

Q. Question 16
Fill in the blanks in the following sentences.
(a) A ____________ process in which a substance reacts with __________ to give off heat is called combustion.

(b) When the clothes of a person catch __________, the person is covered with a __________ to extinguish fire.

(c) The __________ temperature at which a substance catches fire is called its ignition temperature.

(d) The substances which have very ________________ ignition temperature and can easily catch fire with a flame are called __________ substances.

(e) The substances which vapourise during __________, give flame.

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