Water in the earthen pots gets cool because of .............. .

Ice floats on water because..................

Water is used in car radiators as coolant because of

Water bells are introduced in school because

Fill in the blanks. A vapour on cooling changes into …..............….and on further cooling changes into…....................................................

Ozone layer is getting depleted because of

Water is important because -

Heavy water is too micro-organisms because of

Heavy water is toxic to micro-organism because of