Air Around Us

Introduction|Is Air Present Every Where Around Us |Atmosphere|OMR

The layer of air around the earth is known as ____

Colloids around us

An air moleculle spins once in 10^(-12) s. How many times (order of mangitude) would an air molecule spin around its asixs, while the earth revolves once around the sun?

The most common supporter of combustion around us is _______.

Which cells of the retina enable us to see coloured objects around us?

Which cell of retina enable us to see coloured objects around us ?