Question

15. Explain why :
(a) Boiled or distilled water tastes flat.
(b) Ice at zero degree centigrade has greater cooling effect
than water at 0°C.

(d) Rivers and lakes do not freeze easily ?
(e) Air dissolved in water contains a higher proportion of
oxygen

(g) Rain water does not leave behind concentric rings when
boiled.​

Answer 1

Answer:

Pleasnat taste of tap water is because it contains dissolved matter like salts , carbon dioxide and minerals. but boiled or distilled water has not minerals or salts. this it tastes flat.

Ice at 0℃ can absorb a large amount of energy compared to water at 0℃ to produce cooling effect as it can absorb the latest heat of fusion.

Rivers and lakes don't freeze because Water, ice, and snow are good insulators and poor conductors of heat