Why the velocity of sound is greater in the air in rainy season rather than winter?

Why the velocity of sound is greater in moist air than dry air?

The velocity of sound is greater in hydrogen or in oxygen at same temperature?

Why velocity of sound is more during monsoon than winter?

Why is the density of a liquid greater than that of a gas ?

Why does common salt become wet in rainy season?

If v= velocity of sound and V = velocity of air in the diretion of sound, then the resultant velocity of sound will be----

Why the radius of an anion is greater than that of an atom of the element?’