MHT CET 2025 Chemistry question

Chemistry Thermodynamics MHT CET 2025

Calculate the change in internal energy of the system if work done by the system is 18 joule and absorbs heat 50 joule in a particular reaction

(A)20 J
(B)32 JCorrect
(C)48 J
(D)68 J

Answer: (B)

Solution

First law of thermodynamics: , where is the work done ON the system. Heat absorbed by the system: J. Work done BY the system is 18 J, so J. Therefore $Δ U = 50 +

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Question ID VK-103116