NEET UG Thermodynamics — practice questions
19 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Thermodynamics in the app →A gas absorbs $200$ J of heat and does $80$ J of work on its surroundings. The change in internal energy is:A pump compresses gas very fast, so no heat escapes. The process is:A Carnot engine works between $T_h = 400$ K and $T_c = 300$ K. Its efficiency is:A glass of cold lassi placed on a kitchen counter eventually warms to room temperature. The second law of therTwo systems in thermal contact eventually reach the same temperature. This empirical fact is the basis of the:The first law of thermodynamics is a statement of:Internal energy of an ideal gas depends only on:In an isothermal process for an ideal gas:In an adiabatic process:For an ideal gas undergoing an isothermal process from V₁ to V₂, the work done by the gas is:The relation between Cp and Cv for an ideal gas (per mole) is:An ideal gas at temperature T₁ is expanded adiabatically. Its final temperature T₂ is:The Carnot engine's efficiency between source temperature T₁ (hot) and sink T₂ (cold) is:The second law of thermodynamics can be stated as: no engine can convert into work:The change in internal energy of an ideal gas (γ = 1.4) when 2 moles are heated from 300 K to 400 K at constanA Carnot engine operates between 400 K and 300 K. If it absorbs 800 J from the hot reservoir per cycle, the woFor an ideal gas the adiabatic equation linking pressure and volume is:A refrigerator extracts 600 J from the cold compartment and rejects 800 J to the room. Its coefficient of perfWhich of the following is a reversible process in the thermodynamic sense?