In the figure shown,the amount of heat supplied to one mole of an ideal gas is plotted on the horizontal axis and the amount of work done by the gas is plotted on the vertical axis. Assuming the process to be isobaric,identify the gas.

Which one of the following equations specifies an isobaric process?
$[Q=$ heat supplied; $\Delta P, \Delta V$ and $\Delta T$ are change in pressure,volume,and temperature respectively.]

$A$ sample of gas expands from volume ${V_1}$ to ${V_2}$. The amount of work done by the gas is greatest when the expansion is

An ideal monoatomic gas of $1.5$ moles is heated at a constant pressure of $2 \,atm$ so that its temperature increases from $30^{\circ} C$ to $130^{\circ} C$. The work done by the gas is (Universal gas constant $R = 8.3 \,J \,mol^{-1} \,K^{-1}$). (in $\,J$)

$0.08 \text{ kg}$ of air is heated at constant volume through $5^{\circ} \text{C}$. The specific heat of air at constant volume is $0.17 \text{ kcal/kg}^{\circ} \text{C}$ and $J = 4.18 \text{ J/cal}$. The change in its internal energy is approximately: (in $\text{ J}$)

Which of the following graphs between pressure $(P)$ and volume $(V)$ correctly shows isochoric changes?