If a chemical reaction is accompanied by the evolution of heat,it is

Any series of operations so carried out that at the end,the system is back to its initial state is called:

Which of the following is not a state function?
$(I) \, q + W \, (II) \, q \, (III) \, W \, (IV) \, H - TS$

The work done when $2 \, mol$ of an ideal gas expands from $5 \, L$ to $15 \, L$ at a temperature of $300 \, K$ is .............. $kJ$.

Which of the following is true for an isothermal process?

Give the formula that shows the relationship between the boiling point and the enthalpy of evaporation of a solvent.