14 JEE Main 2019 Thermodynamics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 previous-year questions from the Thermodynamics chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Thermodynamics chapter hub.
A rigid diatomic ideal gas undergoes an adiabatic process at room temperature. The relation between temperature and vol…
Three Carnot engines operate in series between a heat source at a temperature T 1 and a heat sink at temperature T 4 (s…
A Carnot engine has an efficiency of 1 6 . When the temperature of the sink is reduced by 62   ℃ , its effic…
One mole of an ideal gas passes through a process where pressure and volume obey the relation   P = P o 1 - 1 2 V…
In a process, temperature and volume of one mole of an ideal monoatomic gas are varied according to the relation VT=K,…
A cylinder with fixed capacity of 67.2 litre contains helium gas at STP. The amount of heat needed to raise the tempera…
A sample of an ideal gas is taken through the cyclic process a b c a as shown in the figure. The change in the internal…
Half mole of an ideal monoatomic gas is heated at a constant pressure of 1   atm from 20 °   C to 90 &#…
Two carnot engines A and B are operated in series. The first one, A , receives heat at T 1 = 600 K and rejects to a res…
The given diagram shows four processes i.e., isochoric, isobaric, isothermal and adiabatic. The correct assignment of t…
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