Out of $E, H, G, q$ and $w$,which are state functions?

$A$ $5 \, L$ cylinder contains $10 \, mol$ of $O_2$ gas at $27 \, ^\circ C$. Due to a leak,the gas escapes into the atmosphere until the pressure inside the cylinder equals the atmospheric pressure $(1.0 \, atm)$. What is the work done by the gas?

What is an exothermic reaction and an endothermic reaction?

Which of the following processes involves zero work done?

What is a system? Explain the types of systems.

Name the energy which arises due to the motion of atoms or molecules in a body. How is this energy affected when the temperature is increased?