1
JEE Advanced 2015 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
A container of fixed volume has a mixture of one mole of hydrogen and one mole of helium in equilibrium at temperature T. Assuming the gases are ideal, the correct statement(s) is(are)
A
The average energy per mole of the gas mixture is 2RT
B
The ratio of speed of sound in the gas mixture to that in helium gas is $$\sqrt {{6 \over 5}}$$
C
The ratio of the rms speed of helium atoms to that of hydrogen molecules is $${1 \over 2}$$
D
The ratio of the rms speed of helium atoms to that of hydrogen molecules is $${1 \over {\sqrt 2 }}$$
2
JEE Advanced 2013 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

The figure below shows the variation of specific heat capacity (C) of a solid as a function of temperature (T). The temperature is increased continuously from 0 to 500 K at a constant rate. Ignoring any volume change, the following statement(s) is(are) correct to a reasonable approximation.

A
The rate at which heat is absorbed in the range 0-100 K varies linearly with temperature T.
B
Heat absorbed in increasing the temperature from 0-100 K is less than the heat required for increasing the temperature from 400-500 K.
C
There is no change in the rate of heat absorption in the range 400-500 K.
D
The rate of heat absorption increases in the range 200-300 K.
3
IIT-JEE 2010 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is P0. Choose the correct option(s) from the following:

A
Internal energies at A and B are the same.
B
Work done by the gas in process AB is P0V0 ln4.
C
Pressure at C is P0/4.
D
Temperature at C is T0/4.
4
IIT-JEE 2009 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

The figure shows the PV plot of an ideal gas taken through a cycle ABCDA. The part ABC is a semicircle and CDA is half of an ellipse. Then,

A
the process during the path A $$\to$$ B is isothermal.
B
heat flows out of the gas during the path B $$\to$$ C $$\to$$ D.
C
work done during the path A $$\to$$ B $$\to$$ C is zero.
D
positive work is done by the gas in the cycle ABCDA.
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