Identify the false statement among the following.

If in a container neither mass nor heat exchange occurs,then it constitutes a

Which among the following is true for the reactions involving only solids or liquids?

One mole of an ideal gas at $300 \ K$ is expanded isothermally from an initial volume of $1 \ L$ to $10 \ L$. The change in internal energy for this process is ....... $cal$ $(R = 2 \ cal \ mol^{-1} \ K^{-1})$

The process,in which no heat enters or leaves the system,is termed as

Fill in the blanks:
$(i)$ $1 \ \text{calorie} = \ldots \ldots \ \text{joules}$
$(ii)$ The work done by the system can be calculated by the equation .......