Physics Mock — Thermodynamics - sonepublication.in

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

1 − T1/T2

T2/T1

T1/T2

1 + 𝑇2/ 𝑇1

#2. During free expansion of an ideal gas:

Temperature decreases

Temperature increases

Internal energy changes

Temperature remains constant

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

Mass of the gas only

Initial and final pressures only

Change in temperature only

Initial and final volumes and temperature

#4. Which thermodynamic variable is a path function?

entropy

Internal Energy

Work

Enthalpy

#5. The slope of an adiabatic curve is:

Greater than isothermal curve

Less than isothermal curve

Equal to isothermal curve

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

Temperature

Entropy

Volume

Pressure

#7. Boyle’s law is valid for

Ideal gas

Both ideal and real gas

Real gas

None

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

Isochoric process

Isobaric process

Isothermal process

Adiabatic process

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

Pressure

Heat exchanged

Internal energy

Temperature

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

Energy can neither be created nor destroyed

Heat flows from hot body to cold body

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

Entropy of the universe always increases

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