Smartindia Classroom
CONTENTS
Physics
Chemistry
Mathematics
Computer science
Back to home
Start Practice
Question-1
The kinetic energy of one gm - molecule of a gas at normal temperature and pressure is (R = 8.31 J mol
-1
K
-1
)
(A)
0.56 x 10
4
J
(B)
1.3 x 10
2
J
(C)
2.7 x 10
3
J
(D)
3.4 x 10
3
J
Question-2
We consider a thermodynamic system. If ΔU represents the increase in its internal energy and W the work done by the system, which of the following statements is true?
(A)
ΔU = - W in an adiabatic process
(B)
ΔU = W in an isothermal process
(C)
ΔU = - W in an isothermal process
(D)
ΔU = W in an adiabatic process
Question-3
Wien's law states that :
(A)
T + λ
m
= constant
(B)
λ
m
T= constant
(C)
λ
m
/T = constant
(D)
T
4
/ λ
m
= constant
Question-4
The number of degrees of freedom for molecules of a mono atomic gas is
(A)
3
(B)
4
(C)
5
(D)
6
Question-5
A scientist says that the efficiency of his heat engine which works at source temperature of 127
o
C and sink temperature 27
o
C is 26%.
(A)
It is impossible
(B)
It is possible but less probable
(C)
It is quite possible
(D)
Data is incomplete
Question-6
The r.m.s velocity of nitrogen molecules at N.T.P is
(A)
33 m/s
(B)
493 m/s
(C)
517 m/s
(D)
546 m/s
Question-7
Calorimeters are made of which of the following ?
(A)
Glass
(B)
Metal
(C)
Wood
(D)
Either (1) or (2)
Question-8
At what temperature is the r.m.s. speed of molecules of hydrogen twice that at S.T.P. ?
(A)
273 K
(B)
546 K
(C)
819 K
(D)
1092 K
Question-9
First law of thermodynamics is a consequence of conservation of
(A)
Work
(B)
Energy
(C)
Heat
(D)
All of these
Question-10
Water falls from a height of 500 m. What is the rise in temperature of water at the bottom if the whole energy is used up in heating water ?
(A)
0.96
o
C
(B)
1.02
o
C
(C)
1.16
o
C
(D)
0.25
o
C
Your Score 0/10
Click
here
to see your answersheet and detailed track records.
Plus 1 Computer Science
Tamil Nadu (English Medium)
Practice in Related Chapters
Wave Motion
Nature of the Physical World and Measurement
Kinematics
Mechanics of Solids and Fluids
Heat and Thermodynamics
Ray Optics
Gravitation and Space Science
Oscillations
Dynamics of Rotational Motion
Magnetism
Powered By
