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Question-1
The kinetic energy of 1 gram of hydrogen gas at 27
o
C will be
(A)
(B)
(C)
(D)
Question-2
The average kinetic energy per molecule of helium gas at temperature T is E and molar gas constant is R. The Avogadro's number is:
(A)
(B)
(C)
(D)
Question-3
R.M.S velocity of a molecule is C at pressure P. If pressure is increased two times, then r.m.s velocity becomes
(A)
0.5 C
(B)
C
(C)
2 C
(D)
3 C
Question-4
The coefficient of apparent expansion of a liquid in a copper vessel is C and in a silver vessel is S. The coefficient of volume expansion is
. The coefficient of linear expansion of silver will be :
(A)
(B)
(C)
(D)
Question-5
For O
2
gas
(A)
1.40
(B)
1.33
(C)
1.66
(D)
1.72
Question-6
At constant pressure, V
1
and V
2
are the volumes of a given mass of a gas at temperatures 27
o
C and 54
o
C respectively. The ratio
V
1 /
V
2 is:
(A)
54
/
27
(B)
27
/
54
(C)
100
/
109
(D)
Question-7
In thermal equilibrium, the average velocity of a gas molecule is:
(A)
Proportional to T
3
(B)
Proportional to T
2
(C)
Proportional to
(D)
Zero
Question-8
A given amount of gas at 20
o
C has a pressure P. The temperature at which the pressure will be 2 P (at constant volume) is approximately
(A)
113
o
C
(B)
40
o
C
(C)
213
o
C
(D)
313
o
C
Question-9
Air is filled at 60
o
C in a vessel with open mouth. The vessel is heated to a temperature T so that
1
/4
th
part of air escapes. Assuming the volume of vessel remains constant, the value of T is :
(A)
80
o
C
(B)
143
o
C
(C)
333
o
C
(D)
416
o
C
Question-10
Which one of the following is the formula of degree of freedom for diatomic gas?
(A)
(B)
(C)
(D)
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Plus 1 Computer Science
CBSE
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