28 If average molecular wt of air is 29 then assuming N2 and

Last updated: 7/4/2023

28 If average molecular wt of air is 29 then assuming N2 and O gases are there which options 2 are correct regarding composition of air iii 72 41 by mass of N 2 only ii is correct b d both i and ii are correct 2 i 75 by mass of N ii 75 by moles N a only i is correct c both ii and iii are correct