This chapter is currently out of syllabus
1
AIEEE 2010
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
If 10–4 dm3 of water is introduced into a 1.0 dm3 flask to 300 K, how many moles of water are in the vapour phase when equilibrium is established ?
(Given : Vapour pressure of H2O at 300 K is 3170 Pa ; R = 8.314 J K–1 mol–1)
A
5.56 x 10–3 mol
B
1.53 x 10–2 mol
C
4.46 x 10–2 mol
D
1.27 x 10–3 mol
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Equal masses of methane and oxygen are mixed in an empty container at 25oC. The fraction of the total pressure exerted by oxygen is
A
2/3
B
1/2
C
1/3 $$\times$$ 273/298
D
1/3
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Which one of the following statements is NOT true about the effect of an increase in temperature on the distribution of molecular speeds in a gas?
A
The most probable speed increases
B
The fraction of the molecules with the most probable speed increases
C
The distribution becomes broader
D
The area under the distribution curve remains the same as under the lower temperature
4
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
As the temperature is raised from 20°C to 40°C, the average kinetic energy of neon atoms changes by a factor of which of the following?
A
1/2
B
2
C
$$313\over293$$
D
$$\sqrt{313\over293}$$
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