Why do acids not show acidic behaviour in the absence of water?

The substance that does not show acidic property when dissolved in water-

Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Give reason for this behaviour.

Why do most of the animals show instinctive behaviour rather than intelligent behaviour?

Arrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for this behaviour.

Why are acids not stored in a metal container?

Why do seeds float on water?

Why oxalic acid is a stronger acid than acetic acid?

how do acids and bases react with each other?

Why do soaps not work in hard water?

Why benzoic acid is a stronger acid than acetic acid?