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Subject :NSO    Class : Class 5

________ does not support burning and is used in the fire extinguisher.

A Oxygen
B Carbon dioxide
C Nitrogen
D Both B and C


b. as nitrogen not used in fire extinguisher

Ans 1:

Class : Class 5
B

Ans 2:

Class : Class 5
B

Ans 3:

Class : Class 8
X

Ans 4:

Class : Class 6
ANS-D -both B and C

Ans 5:

Class : Class 7
But only nitrogen is used in fire extinguisher

Ans 6:

Class : Class 8
ANS- D as nitrogen does support burning and carbon di oxide is used in fire extinguishers

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