This chapter is currently out of syllabus
1
JEE Main 2019 (Online) 10th April Evening Slot
+4
-1
Out of Syllabus
Points I, II and III in the following plot respectively correspond to
(Vmp : most probable velocity)
A
Vmp of O2 (400 K); Vmp of N2 (300 K); Vmp of H2 (300 K)
B
Vmp of N2 (300 K); Vmp of H2 (300 K); Vmp of O2 (400 K)
C
Vmp of H2 (300 K); Vmp of N2 (300 K); Vmp of O2 (400 K)
D
Vmp of N2 (300 K); Vmp of O2 (400 K); Vmp of H2 (300 K)
2
JEE Main 2019 (Online) 10th April Morning Slot
+4
-1
Out of Syllabus
Consider the following table :

Gas a/(k Pa dm6 mol-1) b/(dm3 mol-1)
A 642.32 0.05196
B 155.21 0.04136
C 431.91 0.05196
D 155.21 0.4382

a and b are vander Waals constants. The correct statement about the gases is :
A
Gas C will occupy more volume than gas A; gas B will be more compressible than gas D
B
Gas C will occupy lesser volume than gas A; gas B will be more compressible than gas D
C
Gas C will occupy lesser volume than gas A; gas B will be lesser compressible than gas D
D
Gas C will occupy more volume than gas A; gas B will be lesser compressible than gas D
3
JEE Main 2019 (Online) 9th April Evening Slot
+4
-1
Out of Syllabus
At a given temperature T, gases Ne, Ar, Xe and Kr are found to deviate from ideal gas behaviour. Their equation of state is given as

$$p = {{RT} \over {V - b}}$$ at T.

Here, b is the van der Waals constant. Which gas will exhibit steepest increase in the plot of Z (compression factor) vs p?
A
Xe
B
Ne
C
Ar
D
Kr
4
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
Out of Syllabus
Consider the van der Waals constants, a and b, for the following gases.

Gas Ar Ne Kr Xe
a/ (atm dm6 mol–2) 1.3 0.2 5.1 4.1
b/ (10–2 dm3 mol–1) 3.2 1.7 1.0 5.0

Which gas is expected to have the highest critical temperature?
A
Ne
B
Kr
C
Xe
D
Ar
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