The condition $dw = dq$ holds good in the following process:

$Assertion :$ In an isothermal process,the whole of the heat supplied to the body is converted into internal energy.
$Reason :$ According to the first law of thermodynamics,$\Delta Q = \Delta U + P\Delta V$.

For an ideal gas, in an isothermal process:

One mole of an ideal gas expands from an initial volume of $10 \; L$ to a final volume of $20 \; L$ at a constant temperature of $300 \; K$. Calculate the work done by the gas in $J$. $(R = 8.31 \; J/mol \cdot K)$ (in $; J$)

What is the value of the specific heat of a gas during an isothermal process?

If the pressure of an ideal gas is decreased by $10 \%$ isothermally,then its volume will