Following is the graphical presentation of volumes occupied by different gases at S.T.P.
Which is/are not placed at correct position?

Options

A. `H_(2), He`
B. `He, NH_(3)`
C. `NH_(3), CH_(4)`
D. `CH_(4), H_(2)`

Answer

B

Explanation

Molar mass of `H_(2)`, He, `NH_(3)` and `CH_(4)` are 2,4,17, and 16 g `mol^(-1)` respectively.
2 g of `H_(2)` at S.T.P. = 22.4 L
1 g of `H_(2)` at S.T.P. = 11.2 L
4 g of He at S.T.P. = 22.4 L
17 g `NH_(3)` at S.T.P. = 22.4 L
3g of `NH_(3)` at S.T.P. = 3.95 L
16 g of `CH_(4)` at S.T.P. = 22.4 L
4 g of `CH_(4)` at S.T.P. = 5.6 L