1
WB JEE 2021
+1
-0.25

In the given figure, 1 represents isobaric, 2 represents isothermal and 3 represents adiabatic processes of an ideal gas. If $$\Delta$$U1, $$\Delta$$U2 and $$\Delta$$U3 be the changes in internal energy in these processes respectively, then
A
$$\Delta$$U1 < $$\Delta$$U2 < $$\Delta$$U3
B
$$\Delta$$U1 > $$\Delta$$U2 < $$\Delta$$U3
C
$$\Delta$$U1 = $$\Delta$$U2 > $$\Delta$$U3
D
$$\Delta$$U1 > $$\Delta$$U2 > $$\Delta$$U3
2
WB JEE 2021
+1
-0.25
If pressure of real gas O2, in a container is given by $$p = {{RT} \over {2V - b}} - {a \over {4{b^2}}}$$, then the mass of the gas in the container is
A
32 g
B
16 g
C
4 g
D
64 g
3
WB JEE 2021
+1
-0.25
300 g of water at 25$$^\circ$$C is added to 100 g of ice at 0$$^\circ$$C. The final temperature of the mixture is
A
12.5$$^\circ$$C
B
0$$^\circ$$C
C
25$$^\circ$$C
D
50$$^\circ$$C
4
WB JEE 2020
+1
-0.25
An ideal gas undergoes the cyclic process abca as shown in the given p - V diagram

It rejects 50J of heat during ab and absorbs 80J of heat during ca. During bc, there is no transfer of heat and 40J of work is done by the gas. What should be the area of the closed curved abca?
A
30J
B
40J
C
10J
D
90J
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
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