1.

At 273 K, Pd vs P is plotted for various gases 1,2,3,4 assuming ideal behaviour for gases N_(2), He,CO_(2) and H_(2). The correct combination is [P denotes combination in atmosphere and d denotes density in gm/L:

Answer»

`2 -N_(2),1 - He, 3 -CO_(2), 4-H_(2)`
`4 -N_(2),1-He,2-CO_(2),3 - H_(2)`
`4 - N_(2),3 - He, 2 - CO_(2), 1- H_(2)`
`2 -N_(2),3 - He, 1 - CO_(2), 4 - H_(2)`

Answer :D


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