On volume basis a sample of pure air on an average consists of . . . . . . . . carbon dioxide

A. 0.003%

B. 0.033%

C. 3.030%

D. 0.0003%

Answer: Option B

Solution(By Examveda Team)

Pure air i.e. atmosphere is composed of nitrogen - 78%, oxygen - 21%, carbondioxide - 0.033% and traces of some other gases like argon, helium, ozone, neon, etc.