Question

whic ststement are not true about air
I. air is a mixture of gases
ii. oxygen makes up 50% of air
iii. air contain water vapour
iv. aie contain very little nitrogen
a i and ii
b i and iii
c ii and iv
d ii and iii​

Answer 1

Answer:

d is the ans

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Answer 2

Answer:

2 and 4 which means option c is incorrect.

Explanation:

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