Arrange in increasing order - Speed of sound in steel, water and air.
Oxygen < distilled water < sea water < steel.
The speed of sound in a medium depends on the elasticity and density of the medium. It increases with the increase in elasticity, while it decreases with the increase in density.
As the increase in elasticity is more as compared to the increase in density from gases to solids, the speed of sound is higher in case of solids when compared to liquids and gases.
The speed of sound in Solids > Liquids > Gases.