The surface of the lake is at $2^{\circ} C$. The temperature of the bottom of the lake is ....... $^{\circ} C$.

The point on the pressure-temperature phase diagram where all three phases (solid,liquid,and gas) co-exist is called:

When the pressure on water is increased,the boiling temperature of water as compared to $100^{\circ}C$ will be:

Two objects made of the same material have masses $m$ and $2m$ and are at temperatures $2T$ and $T$ respectively. When heat $Q$ is supplied to the object of mass $2m$, its temperature rises to $2T$. If the same heat $Q$ is supplied to the object of mass $m$, its temperature rises to:

In cold countries,water pipes sometimes burst,because

Out of the following,in which vessel will the temperature of the solution be higher after the salt is completely dissolved?