Q. A gas which is not present in normal sample of air is
Solution:
Dry air contains:
Nitrogen -78.08%
Oxygen – 20.95%
Argon -0.93%
Carbon dioxide -0.033%
Neon -0.0018%
Helium -0.00052%
Methane – 0.0002%
Krypton – 0.00011%
Dinitrogen oxide -O 0.00005%
Hydrogen – 0.00005%
Xenon – 0.0000087%
Ozone – 0.000001%
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