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Subject :NSO    Class : Class 8

Different methods of extinguishing a fire involve the following :
I. Removing the combustible substance.
II. Cooling the substance to a temperature below its ignition temperature.
III. Cutting off the supply of air.
Which of the following statements is correct?

A Method I is suitable in case of a building on fire.
B Method II involves water which works when wood or paper are on fire.
C Method III involves carbon dioxide gas which is lighter than oxygen and forms a blanket around the air.
D All of these

whats wrong with B

Ans 1:

Class : Class 8
Why is it b

Ans 2:

Class : Class 5

Ans 3: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 4:

Class : Class 8
Its all of these.

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