Column-I shows graphs of thermodynamic proces | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

$(A)$ $PV = 	ext{constant}$ (Isothermal process). Since $T$ is constant, $\Delta U = 0$. As $V$ increases, $W$  >  0. By first law, $\Delta Q = W + \

Vedclass · Accepted Answer

$A-PR, B-RS, C-PRS, D-QT$

Vedclass · Answer

$(A)$ $PV = ext{constant}$ (Isothermal process). Since $T$ is constant, $\Delta U = 0$. As $V$ increases, $W$ > 0. By first law, $\Delta Q = W + \Delta U = W$ > 0. Matches: $(P, R)$.$(B)$ $P \propto T$ (Isochoric process). $W = 0$. As $T$ increases, $\Delta U$ > 0. By first law, $\Delta Q = \Delta U$ > 0. Matches: $(R, S)$.$(C)$ $P = ext{constant}$ (Isobaric expansion). As $V$ increases, $W$ > 0. Since $T$ increases, $\Delta U$ > 0. By first law, $\Delta Q = W + \Delta U$ > 0. Matches: $(P, R, S)$.$(D)$ $V \propto T$ (Isobaric compression). As $V$ decreases, $W$ < 0. Since $T$ decreases, $\Delta U$ < 0. By first law, $\Delta Q = W + \Delta U$ < 0. Matches: $(Q, T)$.

Column-$I$	Column-$II$
$(A)$ $PV$ vs $V$ (Isothermal expansion)	$(P)$ $W$ > 0
$(B)$ $P$ vs $T$ (Isochoric heating)	$(Q)$ $W$ < 0
$(C)$ $P$ vs $V$ (Isobaric expansion)	$(R)$ $\Delta Q$ > 0
$(D)$ $V$ vs $T$ (Isobaric compression)	$(S)$ $\Delta U$ > 0
	$(T)$ $\Delta U$ < 0

Similar Questions

The following figure shows the $P-T$ graph for four processes $A, B, C,$ and $D$. Select the correct alternative.

If $dQ$, $dU$, and $dW$ are heat energy absorbed, change in internal energy, and external work done respectively by a diatomic gas at constant pressure, then the ratio $dW: dU: dQ$ is:

Which of the following statements is incorrect?

When an ideal gas is heated at constant pressure,what percentage of the heat supplied is used to perform external work? $(\gamma = 5/3)$

The specific heat of hydrogen gas at constant pressure is $C_P = 3.4 \times 10^3 \text{ cal/kg } ^oC$ and at constant volume is $C_V = 2.4 \times 10^3 \text{ cal/kg } ^oC$. If $1 \text{ kg}$ of hydrogen gas is heated from $10^oC$ to $20^oC$ at constant pressure,the external work done by the gas is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module