Which of the following statement describe the 'zeroth law of thermodynamics'?
1
Entropy of an isolated system always increases.
2
If two systems, A and B, are in thermal equilibrium with each another, and B is in thermal equilibrium with a third system, C, then A is also in thermal equilibrium with C.
3
Energy can neither be created nor destroyed in a chemical reaction.
4
Energy supplied gets converted into work done and heat.