Science- Air Around Us

nitrogen ✘ oxygen ✘ carbon dioxide ✘ inert gases ✔

Nitrogen ✘ Oxygen ✘ Carbon dioxide ✘ Carbon monoxide ✔

Carbon dioxide ✘ Nitrogen ✘ Oxygen ✘ None of these ✔

air around us ✘ rising hot air ✘ air in motion ✘ none of these ✔

atmosphere ✘ soil ✘ water of ponds, lakes and seas ✘ everywhere ✔

a mixture ✘ a pure substance ✘ an element ✘ anything, that depends on the place where it is found ✔

biosphere ✘ atmosphere ✘ environment ✘ ecosystem ✔

It occupies space. ✘ It is transparent, ✘ It is a solution. ✘ It is a compound. ✔

01:04 ✘ 04:00 ✘ 03:01 ✘ 01:02 ✔

nitrogen ✘ oxygen ✘ carbon dioxide ✘ hydrogen ✔