AKUEB Class 11 (HSSC-I) Physics Thermodynamics MCQs & Practice Questions

Class 11 - Physics / Unit 10 - Thermodynamics / 10.11 Entropy / 10.11.5

Past Paper 2025EASY

An increase in the thermal pollution of the environment means an increase in

entropy.soil erosion.adiabatic expansion.isothermal compression.

Class 11 - Physics / Unit 10 - Thermodynamics / 10.9 Carnot Engine / 10.9.3

Past Paper 2025EASY

The efficiency (E) of a Carnot engine is always

E < 0\%

E = 0\%

E < 100\%

E = 100\%

Class 11 - Physics / Unit 10 - Thermodynamics / 10.5 First Law of Thermodynamics / 10.5.3

Past Paper 2025MEDIUM

In the given figure, four different processes for a constant amount of an ideal gas, all starting at state $a$ , are shown. In which of the given processes, the system does ZERO work on its surrounding?

ABCD

Class 11 - Physics / Unit 10 - Thermodynamics / 10.5 First Law of Thermodynamics / 10.5.2

Past Paper 2025HARD

Which of the following options is CORRECT according to the different processes of thermodynamics?

Isothermal process:

q = +W

Isochoric process:

\Delta U = -q

Adiabatic process:

\Delta U = +W

Isobaric process:

q = -W

Class 11 - Physics / Unit 10 - Thermodynamics / 10.5 First Law of Thermodynamics / 10.5.1

Past Paper 2025EASY

The first law of thermodynamics gives the relationship between heat

and workdone only.and internal energy of a system.workdone and properties of a system.workdone and internal energy of a system.

Class 11 - Physics / Unit 10 - Thermodynamics / 10.5 First Law of Thermodynamics / 10.5.3

Past Paper 2025MEDIUM

If the volume of an ideal gas in an insulated container increases from $10\text{ m}^3$ to $20\text{ m}^3$ under a constant pressure of $2\times10^5\text{ Pa}$ , then the work done by the gas will be

1\times10^4\text{ J}

2\times10^4\text{ J}

2\times10^6\text{ J}

6\times10^6\text{ J}

Class 11 - Physics / Unit 10 - Thermodynamics / 10.7 Reversible and Irreversible Process / 10.7.1

Model Paper 2026MEDIUM

All of the following are the examples of reversible process EXCEPT

boiling of raw eggscompression of a helical springslow compression of oxygen gasfreezing of a carbonated drink into ice

Class 11 - Physics / Unit 10 - Thermodynamics / 10.4 Internal Energy and Work / 10.4.3

Model Paper 2026EASY

In thermodynamics, when any two objects are rubbed together, then their internal energy will

increasedecreasebecome zeroremain constant

Class 11 - Physics / Unit 10 - Thermodynamics / 10.8 Second Law of Thermodynamics / 10.8.1

Model Paper 2026MEDIUM

According to the 2nd law of thermodynamics, heat can be converted into mechanical work if the system contains

two heat reservoirs at the same temperaturetwo heat reservoirs at different temperaturesan engine and a heat reservoir at the same temperaturean engine and two heat reservoirs at different temperatures

Class 11 - Physics / Unit 10 - Thermodynamics / 10.5 First Law of Thermodynamics / 10.5.2

Model Paper 2026MEDIUM

Q10

A thermodynamics process in which an ice cube starts melting and converts into water droplets while keeping the temperature of its surrounding constant is called an

isobaric processisochoric processadiabatic processisothermal process

Class 11 - Physics / Unit 10 - Thermodynamics / 10.2 Fundamentals of the Ideal Gas / 10.2.1

Model Paper 2026MEDIUM

Q11

According to Boyle's law, volume is inversely proportional to pressure of a gas at constant
I. mass
II. density
III. temperature

I onlyII onlyI and IIIII and III

Class 11 - Physics / Unit 10 - Thermodynamics / 10.9 Carnot Engine / 10.9.2

Model Paper 2026MEDIUM

Q12

The CORRECT sequence of the working principle of Carnot engine is

Adiabatic compression → isothermal expansion → isobaric compression → isochoric expansionIsothermal expansion → isobaric compression → adiabatic compression → isochoric expansionIsothermal expansion → adiabatic expansion → isothermal compression → adiabatic compressionIsobaric compression → isothermal expansion → isochoric expansion → adiabatic compression

Class 11 - Physics / Unit 10 - Thermodynamics / 10.9 Carnot Engine / 10.9.3

Model Paper 2026MEDIUM

Q13

All Carnot engines have zero efficiency if they are operating between two bodies with

the same temperature and the same nature of the working substancedifferent temperatures and the same nature of the working substancethe same temperature irrespective of the nature of the working substancedifferent temperatures irrespective of the nature of the working substance

Thermodynamics - Class 11 (HSSC-I) Physics