M.Sc. Chemistry (PU-CET P.G) 2019 Panjab University Entrance Exam With Answers

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43.

CO2 and N2 are non- supporter of combustion. However, for putting out fires CO2 is preferred over N2 and CO2:

A: Does not burn
B: Forms non-combustible products with burning substances
C: Is denser than nitrogen
D: Is a more reactive

The answer is: C

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