When a drop of water falls on a very hot iron, it takes quite long to evaporate. Why ?

When a drop of water is added to anhydrous CuSO_4 , it turns blue.

When a drop of water splits up into number of droplets, then which of the following is correct?

Two equal drops of water are falling through air with a steady velocity v. If the drops coalesced, what will be the new velocity?

Two equal drops of water are falling through air with a steady velocity v. If the drops coalesced, what will be the new velocity?

When hot water is poured on a glass plate, it breaks because of

A small drop of water falls from rest through a large height h in air, the final velocity is

The element of heater is very hot while the wires carrying current are cold. Why?

When water droplets merge to form a bigger drop

When water droplets merge to form a bigger drop

Eight equal drops of water are falling through air with a steady velocity of 10 cms^(-1) . If the drops combine to form a single drop big in size, then the terminal velocity of this big drop is