MHT CET 2024 Chemistry question

In a process 605 J heat is absorbed by the system and 380 J work is done by the system on surrounding. What is the value of ?

(A)-225 J
(B)-985 J
(C)+225 JCorrect
(D)+985 J

Answer: (C)

Solution

By the first law of thermodynamics (IUPAC sign convention) . Heat absorbed by the system: J. Work done BY the system on the surroundings is work lost by the system: J. Therefore $Δ U =

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Question ID VK-092780