NCERT Solutions for Chapter: Heat, Exercise 2: VERY SHORT ANSWER QUESTIONS

Shopkeepers selling ice blocks usually cover them with jute sacks. Explain why.

A laboratory thermometer $A$ is kept $7 \mathrm{cm}$ away on the side of the flame while a similar thermometer $B$ is kept $7 \mathrm{cm}$ above the flame of a candle as shown in the figure below.

Which of the thermometers, $A$ or $B$, will show a greater rise in temperature? Give a reason for your answer.

To keep her soup warm Paheli wrapped the container in which it was kept with a woollen cloth. Can she apply the same method to keep a glass of cold drink cool? Give reason for your answer.

In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury?