Question

Elaborate the reasons for occurrence of understated statement / observations:
(a) Water becomes cold an adding ice cubes in it.
(b) Liquids generally have lower density as compared to solids.
(c) We feel cold after a hot water bath. OR Perspiration keeps our body cool.
(d) Boiling is bulk phenomena.
(e) It is important to know the melting point of a substance.
(f) A wet bandage is placed on the forehead of a person suffering from high fever.
(g) Honey is more viscous than water.
(h) Rate of evaporation of an aqueous solution decreases with increase in humidity.
(i) Pressure increases with increase in temperature in a gas container.
(j) Rate of diffusion takes place more in gases and liquids as compared to solids.

Answer 1

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