Question 21 MarkBoiling occurs in the whole volume of a liquid whereas evaporation occurs only at the surface of a liquidAnswertrueView full question & answer→
Question 31 MarkWet clothes dry because the water in them boils to its vapour state.AnswerFalse.Correct : Wet clothes dry because the water in them evaporates to its vapour state.View full question & answer→
Question 41 MarkBoiling causes cooling.AnswerFalse.Correct : Evaporation causes cooling.View full question & answer→
Question 51 MarkOut of solids, liquids and gases, gases expand the most.AnswertrueView full question & answer→
Question 61 MarkGlass is a good conductor of heat.AnswerFalse.Correct : Glass is a poor conductor of heat.View full question & answer→
Question 71 MarkGravesande’s ring$-$and$-$ball experiment shows that liquids expand on heating.AnswerFalse. Correct : Gravesand’s ring$-$and$-$ball experiment shows that solids expand on heating.View full question & answer→
Question 81 MarkSuperficial expansion can only occur in solids and liquids.AnswerFalse.Correct: Superficial expansion only occurs in solids.View full question & answer→
Question 91 MarkMost of the substances decrease in their dimensions on heating.AnswerFalse.Correct : Most of the substances experience increase in their dimensions when heated.View full question & answer→
Question 101 MarkWater in earthen pots remains cool due to thermal expansion.AnswerFalse.Correct : Water in earthen pots remain cool due to evaporation.View full question & answer→
Question 121 MarkDuring the process of boiling, the temperature of the liquid remains constant.AnswertrueView full question & answer→