Write whether the following statements are true or false.

(a) Only water can exist in three different states. ……………

(b) If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely. ……………

(c) Solids have the largest inter-molecular space. ……………

(d) There is no difference between evaporation and boiling. ……………

(e) All solids, on heating, first change to liquid and then to the gaseous state. ……………

(f) The intermolecular force of attraction is the weakest in gases. ……………

(g) A gas has no free surface. ……………

(a) False
Correct Statement — Many substances like carbon dioxide, iodine, etc., can exist in solid, liquid, and gaseous states under suitable conditions.

(b) True

(c) False
Correct Statement — Gases have the largest intermolecular space. Solids have very tightly packed particles.

(d) False
Correct Statement — Evaporation is a slow surface-level process that occurs at any temperature, while boiling is a rapid, bulk process that happens at the boiling point.

(e) False
Correct Statement — Some solids like camphor, iodine, and dry ice undergo sublimation, changing directly from solid to gas without becoming liquid.

(f) True

(g) True