You might have observed the bubbles of steam coming from bottom of vessel when water is heated.These bubbles disappear as it reaches top of liquid just before boiling and they reach the surface at the time of boiling.Explain the reason.

The size of air bubbles rising from the bottom of an aquarium increases. Can you explain the reason? What do you observe?

A bubble of gas released at the bottom of a lake increases to eight times its original volume when it reaches the surface. Assuming that atmospheric pressure is equivalent to the pressure exerted by a column of water 10 m height, the depth of the lake is

An air bubble of volume 0.21 cm^3 at the bottom of a water tank, at 5^(@)C and 3 atm pressure, rises to the surface where the temperature is 25^(@)C and pressure is 1 atm. What will be the volume of the bubble when it reaches the surface?