Write true or false for each statement:

(a) Evaporation is rapid on a wet day.

(b) Evaporation takes place only from the surface of a liquid.

(c) All molecules of a liquid take part in the process of evaporation.

(d) Temperature of a liquid rises during boiling or vaporization.

(e) All molecules of a liquid take part in boiling.

(f) Boiling is a rapid phenomenon.

(g) All solids expand by the same amount when heated to the same rise in temperature.

(h) Telephone wires are kept tight between the two poles in winter.

(i) Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.

(j) Solids expand the least and gases expand the most on being heated.

(k) A mercury thermometer makes use of the property of expansion of liquids on heating.

(l) Kerosene contracts on heating.

(a) False
Correct Statement — Evaporation is rapid on a dry day.

(b) True

(c) False
Correct Statement — Only the molecules on the surface of a liquid take part in the process of evaporation.

(d) False
Correct Statement — Temperature of a liquid remains constant during boiling or vaporization.

(e) True

(f) True

(g) False
Correct Statement — All solids do not expand by the same amount when heated to the same rise in temperature.

(h) True

(i) True

(j) True

(k) True

(l) False
Correct Statement — Kerosene expands on heating.