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.Management Sciences
Category: Heat and Thermodynamics
Which one is true for internal energy ?
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A. It is sum of all forms of energies associated with molecules of a system
B. It is a state function of a system
C. It is proportional to transnational K.E of the molecules
D. All are correct
At constant temperature the graph between V and 1/P is_____________?
A. Hyperbola
B. Parabola
C. A curve of any shape
D. A straight lime
Standard condition STP refer to a gas at ___________________?
A. 76cm 0°C
B. 760mm 273K
C. 1atm 273K
D. all of the above
If the volume of a gas is held constant and we increase its temperature then_______________?
A. its pressure is constant
B. its pressure rises
C. its pressure falls
D. any of above
We can produce heat by________________?
A. Frictional process
B. Chemical processes
C. Electrical processes
D. All of the above
Average translational kinetic energy per molecule of an ideal gas is given by_____________?
A. 3NaT/2R
B. 2NaT/3
C. 3RT/2Na
D. 3Na/2RT
Numerical value of Boltzmanns constant is______________?
A. 1.38×10-31JK-1
B. 3.18×10-31JK-1
C. 3.18×10-23JK-1
D. 1.38×10-23JK-1
We prefer mercury as a thermometric substance because______________?
A. Over a wide range of temperature its expansion is uniform
B. It does not stick to thermometer glass
C. It opaque to light
D. All of above
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