Which one of the following is the permanent gas in the atmosphere?
A. Carbon dioxide
B. Ozone
C. Nitrogen
D. Neon
Answer: Option C
Related Questions on Non Metal and Its Compounds
Red phosphorus is less reactive than yellow phosphorus because
A. it is red in colour
B. it is highly polymerised
C. it is insoluble in C2H5OH
D. it is hard
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