Physics Mock — Thermodynamics - sonepublication.in

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#1. During free expansion of an ideal gas:

Temperature remains constant

Temperature decreases

Internal energy changes

Temperature increases

#2. The efficiency of a Carnot engine operating between temperatures T 1 and T 2 is:

1 − T1/T2

T1/T2

1 + 𝑇2/ 𝑇1

T2/T1

#3. Q3. Zeroth Law of Thermodynamics states that:

Entropy of the universe always increases

If two systems are separately in thermal equilibrium with a third system, they are in thermal equilibrium with each other

Heat flows from hot body to cold body

Energy can neither be created nor destroyed

#4. Boyle’s law is valid for

Both ideal and real gas

None

Ideal gas

Real gas

#5. The slope of an adiabatic curve is:

Equal to isothermal curve

Less than isothermal curve

Greater than isothermal curve

#6. In which process is molar specific heat infinite?

Isothermal process

Isochoric process

Adiabatic process

Isobaric process

#7. For an adiabatic process of an ideal gas, which quantity remains constant?

Internal energy

Temperature

Heat exchanged

Pressure

#8. The work done in an isothermal expansion of an ideal gas depends upon:

Initial and final pressures only

Initial and final volumes and temperature

Change in temperature only

Mass of the gas only

#9. Which thermodynamic variable is a path function?

Work

entropy

Enthalpy

Internal Energy

#10. The Internal energy of an ideal gas is depends on

Volume

Pressure

Entropy

Temperature

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