Question

A gas undergoes a process according to the graph. $P$ is pressure, $V$ is volume, $W$ is work done by the gas, $\Delta U$ is change in internal energy of the gas and $\Delta Q$ is heat given to the system. Match the two columns.

Column I		Column II
A	For process AB	1	$\Delta U>0,\Delta Q>0$
B	For process BC	2	$\Delta U<0,\Delta Q<0$
C	For process CD	3	$\Delta Q\times \Delta U\times W=0$
D	For process DA	4	$\Delta Q\times \Delta U<0$

• A. (A)-(1), (B)- (2), (C)- (4), D -(3 )
• B. (A) - (3), (B) - (1), (C) - (2), D - (2)
• C. (A) - (2), (B) - (1), (C) - (4), (D) - (3)
• D. (A) - (4), (B) - (3), (C) - (2), (D) - (1)

Answer 1

Answer: (B)

$A\to (3);B\to (1);C\to (2);D\to (2)$