jee_main_2026_22_january_evening - Thermodynamics Topics

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QUESTION #50 Ideal Gas Law and Gas Compression
An insulated cylinder of volume 60 mathrm~cm^3 is filled with a gas at 27^circmathrmC and 2 atmospheric pressure. Then the gas is compressed making the final volume as 20 mathrm~cm^3 while allowing the temperature to rise to 77^circmathrmC. The final pressure is ____ atmospheric pressure.
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QUESTION #72 Born-Haber Cycle and Lattice Enthalpy
If the enthalpy of sublimation of Li is 155text kJ mol^-1, enthalpy of dissociation of textF_2 is 150text kJ mol^-1, ionization enthalpy of Li is 520text kJ mol^-1, electron gain enthalpy of F is -313text kJ mol^-1, standard enthalpy of formation of LiF is -594text kJ mol^-1. The magnitude of lattice enthalpy of LiF is ____ textkJ mol^-1 (Nearest integer).
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