Free Test Zeroth and first law – NEET

Q1: Which law of thermodynamics defines temperature?

A. First law B. Zeroth law C. Second law D. Third law

Q2: Which statement is correct regarding the Zeroth law?

A. It defines internal energy. B. It relates pressure and volume. C. It establishes thermal equilibrium. D. It defines entropy.

Q3: What is the physical significance of the Zeroth law?

A. Defines temperature B. Defines energy conservation C. Defines entropy D. Defines pressure

Q4: Which of the following is mathematically represented as ΔQ = ΔU + W?

A. Second law B. First law C. Zeroth law D. Third law

Q5: First law of thermodynamics is a statement of:

A. Conservation of heat B. Conservation of energy C. Conservation of work D. Conservation of temperature

Q6: In thermodynamics, work done by the system is considered:

A. Negative B. Zero C. Positive D. Infinite

Q7: If ΔQ = 0 and W = 0, what is ΔU?

A. Zero B. Maximum C. Minimum D. Infinite

Q8: In an isothermal process, the change in internal energy is:

A. Zero B. Positive C. Negative D. Infinity

Q9: Which of the following quantities is not conserved?

A. Energy B. Mass C. Heat D. Momentum

Q10: What happens to internal energy in an adiabatic compression?

A. Decreases B. Increases C. Remains same D. Becomes zero

Q11: Which process does not involve heat exchange?

A. Adiabatic B. Isothermal C. Isochoric D. Isobaric

Q12: The SI unit of internal energy is:

A. Joule B. Calorie C. Watt D. Kelvin

Q13: What is the value of ΔU in a cyclic process?

A. Positive B. Negative C. Zero D. Infinite

Q14: Which of the following is path-dependent?

A. Internal energy B. Work C. Temperature D. Volume

Q15: For an adiabatic process in an ideal gas, PV^γ = constant. What is γ?

A. P/V B. C_p/C_v C. V/P D. C_v/C_p

Q16: When a gas expands adiabatically and does work, its temperature:

A. Increases B. Decreases C. Remains constant D. Becomes zero

Q17: Which law enables the construction of thermometers?

A. First law B. Second law C. Zeroth law D. Third law

Q18: In the equation ΔQ = ΔU + W, ΔQ is positive if:

A. Heat is lost B. Heat is absorbed C. Work is done on the system D. Work done is zero

Quiz for Zeroth and first law