Which mixture is lighter than humid air?

1.	Which mixture is lighter than humid air?
Answer» `N_(2)+O_(2)+SO_(2)` `N_(2)+O_(2)+CO_(2)` `N_(2)+O_(2)+C_(2)H_(6)` `N_(2)+O_(2)+H_(2)` SOLUTION :HUMID Air = `N_(2)+O_(2)+H_(2)O` `therefore` Lighter = `N_(2)+O_(2)+H_(2)`

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