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MCQEasyJEE Main 2026 · 23 January, Shift 1Internal Energy & Enthalpy

Chemistry Question from JEE Main 2026 · 23 January, Shift 1

A cup of water at 5∘C5^\circ \text{C} (system) is placed in a microwave oven and the oven is turned on for one minute during which the water begins to boil. Which of the following option is true ?

  • A

    q=+veq = +ve, w=0w = 0, ΔU=−ve\Delta U = -ve

  • B

    q=+veq = +ve, w=−vew = -ve, ΔU=+ve\Delta U = +ve

  • C

    q=+veq = +ve, w=−vew = -ve, ΔU=−ve\Delta U = -ve

  • D

    q=−veq = -ve, w=−vew = -ve, ΔU=−ve\Delta U = -ve

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