Engineering Online MCQ Number 0128 for assignment and exam purpose

Multiple choice question for engineering Set 1 1. The internal energy change in a system that has absorbed 2kcal of heat and done 500 J of work is a) 6400 J b) 5400 J c) 7900 J d) 8900 J AnswerAnswer: c [Reason:] As Q=∆U+W ∆U=Q-W=2×4.2×1000-500 ∆U=8400-500=7900 J 2. 110 J of heat is added…


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