Would air be a homogeneous or heterogeneous mixture?

Answer 1

Air is a homogenous mixture consisting to 78% of oxygen, 21% of nitrogen, and 1% of trace gases (the noble gases argon and xenon, for example.)

Answer 2

homogeneous, since although you are not able to see it, air is made up of many gases, like nitrogen, oxygen,etc.

Answer 3

Air is a homogeneous mixture.

Answer 4

Air is a homogeneous mixture

Answer 5

Air is a homogeneous mixture of gases.

Answer 6

air can be homogeneous mixture as well as heterogeneous too.when we talk about air in normal circumstances,its homogeneous comprising of many gases.however smog causes some difference in the whole constituent composition of air.my question is,what to write in exams??