MCQ on Thermodynamics Physics. We covered all the MCQ on Thermodynamics Physics in this post for free so that you can practice well for the exam.
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MCQ on Thermodynamics Physics for Students
The temperature of gas contained in a closed vessel increases by 1°C when the pressure of the gas is increased by 1%. The initial temperature of the gas is
1. 100°C
2. 100K
3. 250°C
4. 200K
Option 2 – 100K
At what temperature is the root mean square velocity of gaseous hydrogen molecules equal to that of oxygen molecules at 47°C
1.80 K
2. 20°K
3. 20°C
4. None
Option 2 – 20°K
At a given temperature the force between molecules of a gas is a function of intermolecular distance is
1. initially decrease then increase
2. increase always
3. decrease always
4. None
Option 1 – initially decrease then increase
Two cylinders fitted with pistons contain an equal amount of an ideal diatomic gas at 300K. The piston of A is free to move while B is held fixed. The same amount of heat is given to the gas in each cylinder, if the rise in temperature of the gas in A is 30K then the rise in temperature of the gas in B is
1. 42K
2. 18K
3. 30K
4. 50K
Option 1 – 42K
Thermo dynamics first law is a special case of
1. Charle’s Law
2. Law of conservation of energy
3. Newton’s Law
4. Law of heat exchange
Option 2 – Law of conservation of energy
A gas has pressure P and volume V. It is now compressed adiabatically to 1/32 times the original volume. The final pressure is
1. 32P
2. 128
3. 128P
4. P/128
Option 3 – 128P
In isothermal expansion, an ideal gas internal energy will be
1. decrease
2. increase
3. No change
4. first in creases then decrease
Option 3 – No change
In an adiabatic change process, an ideal gas work done depends only on
1. Change in temperature
2. Change in pressure
3. Change in volume
4. None
Option 1 – Change in temperature
100grm of ice at 0°C is mixed with 100grm of water at 80°C. The latent heat of fusion is 540 Cal/grm and the specific heat of water is 1Cal/grm at 0’C. The final temperature of the mixture is
1. 40°C
2. 10°C
3. 20°C
4. 0°C
Option 4 – 0°C
We covered all the mcq on thermodynamics physics above in this post for free so that you can practice well for the exam.
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