I. It has a varied composition from one place to another. ll. it constituents can be separated by physical means
lll. It contains unreactive noble gases
which of the above shows that air is a mixture?

lordnewton

5 years ago

three is also correct the presence of unreactive gases shows suggest air is a mixture
for no compund will contain unreactive gases in its normal state

drcarefree

4 years ago

Air can be separated into its constituents by only physical means because they are not chemically combined.

Masuzy21

3 years ago

all of the above is correct i.e I, II and III

Basit73

4 months ago

presence of noble gas doesn't prove that air is a mixture

Emyedem01

5 years ago

Can air be separated through physical means??

Tmarvel1

1 year ago

the correct and was I,II and,III

KingKelvinakashadow

5 years ago

I don't think air can be separated by physical means.
So i think the ans is supposed to be C