Correct the given statement :
With the rise in temperature of the air its density increases.
With the rise in temperature of the air its density decreases.
The hot air rises up as its density increases.
Assertion
The density of liquids and gases decreases with the rise in temperature.
Reason
With the rise in temperature, the volume of the gases or liquids increases, but not mass. As density is mass per unit volume, therefore, with the increase in volume the density decreases.
How does the density of a liquid change with the rise in its temperature ?