Question

how do we establish by experiment that liquid expand due to heat?​

Answer 1

Answer:

Let it be at A. Now heat the flask. As water gets heated in flask, the level of water in the tube rises from A to B. This proves that liquids expand on heating.

Answer 2

Answer:

As water gets heated in a flask, the level of water in the tube rises from A to B. This proves that liquids expand on heating. Experiment: Take a laboratory Celsius thermometer Suspend it with the help of a stand. Note the level of mercury thread in it .