Give reasons :
(a) Water is used as a cooling agent.
(b) Water pipes burst in severe winters.
(c) It is difficult to cook in hills as compared to plains.
(d) Ice floats on water.
(e) Sea water does not freeze at 0∘C.
Which of the following substance can be used as a cooling agent?
Q.1 Give reasons-
1. HOT WATER EXTINGUISHES FIRE MORE QUICKLY.
2. EXPOSED WATER PIPES BURST DURING A SEVERE FROST.
Q.2 WHY DOES EVAPORATION ALWAYS PRODUCE COOLING?