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## Heat and Thermodynamics

### Physics

#### Previous Years Questions

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One mole of an ideal monoatomic gas expands along the polytrope PV3 = constant from V1 to V2 at a constant pressure P1. ...
WB JEE 2022
One mole of a diatomic ideal gas undergoes a process shown in P-V diagram. The total heat given to the gas (ln 2 = 0.7) ...
WB JEE 2022
Consider a thermodynamic process where integral energy $$U = A{P^2}V$$ (A = constant). If the process is performed adiab...
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Certain amount of an ideal gas is taken from its initial state 1 to final state 4 through the paths 1 $$\to$$ 2 $$\to$$ ...
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300 g of water at 25$$^\circ$$C is added to 100 g of ice at 0$$^\circ$$C. The final temperature of the mixture is
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If pressure of real gas O2, in a container is given by $$p = {{RT} \over {2V - b}} - {a \over {4{b^2}}}$$, then the mass...
WB JEE 2021
In the given figure, 1 represents isobaric, 2 represents isothermal and 3 represents adiabatic processes of an ideal gas...
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A metallic block of mass 20 kg is dragged with a uniform velocity of 0.5 ms-1 on a horizontal table for 2.1 s. The coeff...
WB JEE 2020
When 100 g of boiling water at 100$$^\circ$$ C is added into a calorimeter containing 300 g of cold water at 10$$^\circ... WB JEE 2020 A container AB in the shape of a rectangular parallelopiped of length 5 m is divided internally by a movable partition P... WB JEE 2020 An ideal gas undergoes the cyclic process abca as shown in the given p - V diagramIt rejects 50J of heat during ab and a... WB JEE 2020 Two identical blocks of ice move in opposite directions with equal speed and collide with each other. What will be the m... WB JEE 2019 A horizontal fire hose with a nozzle of cross-sectional area$${5 \over {\sqrt {21} }} \times {10^{ - 3}}{m^2}$$deliver... WB JEE 2019 Consider the given diagram. An ideal gas is contained in a chamber (left) of volume V and is at an absolute temperature ... WB JEE 2019 What will be the molar specific heat at constant volume of an ideal gas consisting of rigid diatomic molecules? WB JEE 2019 Two black bodies A and B have equal surface areas are maintained at temperatures 27$$^\circ$$C and 177$$^\circ$$C respec... WB JEE 2019 For an ideal gas with initial pressure and volume pi and Vi respectively, a reversible isothermal expansion happens, whe... WB JEE 2018 One mole of a monoatomic ideal gas undergoes a quasistatic process, which is depicted by a straight line joining points ... WB JEE 2018 The water equivalent of a calorimeter is 10 g and it contains 50 g of water at 15$$^\circ$$C. Some amount of ice, initia... WB JEE 2018 2 moles of an ideal monoatomic gas is carried from a state (p0, V0) to state (2p0, 2V0) along a straight line path in a ... WB JEE 2017 Temperature of an ideal gas, initially at 27$$^\circ$$C, is raised by 6$$^\circ$$C. The rms velocity of the gas molecule... WB JEE 2017 When the room temperature becomes equal to the dew point, the relative humidity of the room is WB JEE 2008 At what temperature will the rms speed of air molecules be double that of NTP? WB JEE 2008 An experiment takes 10 minutes to raise temperature of water from 0$$^\circ$$C to 100$$^\circ$$C and another 55 minutes ... WB JEE 2008 Which one of the figures gives the temperatures dependance of density of water correctly? WB JEE 2008 Six molecules have speeds 2 units, 5 units, 3 units, 6 units, 3 units and 5 units respectively. The rms speed is WB JEE 2008 ## MCQ (More than One Correct Answer) More Consider the p - V diagram for 1 mole of an ideal monatomic gas shown in the figure. Which of the following statements i... WB JEE 2021 The initial pressure and volume of a given mass of an ideal gas with$$\left( {{{{C_p}} \over {{C_V}}} = \gamma } \right...
WB JEE 2019
Which of the following statement(s) is/are true?"Internal energy of an ideal gas .............."
WB JEE 2018
If the pressure, temperature and density of an ideal gas are denoted by p, T and $$\rho$$, respectively, the velocity o...
WB JEE 2017

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