Which of the following oxides of nitrogen is known as laughing gas?
A. NO
B. N2O5
C. NO2
D. N2O
Answer: Option D
A. NO
B. N2O5
C. NO2
D. N2O
Answer: Option D
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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