Explain why:
(a) Boiled or distilled water taste flat.
(b) Ice at 0∘C. has the greater cooling effect than water at 0∘C.
(c) Burns caused by steam are more severe than burns caused by boiling water.
(d) Rainwater does not leave behind concentric rings when boiled.
(e) Air dissolved in water contains a higher proportion of oxygen.
(f) If distilled water is kept in a sealed bottle for a long time, it leaves etchings on the surface of the glass.
The burns caused by boiling water is more severe than steam.