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JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 28 July 2022, Shift 1, Chemistry Q62

Question 62 of 90 in this shift, Chemistry question 2 of 30, Section A.

Which of the following relation is not correct ?

(1) $\Delta H=\Delta U-P\Delta V$ Official answer
(2) $\Delta U=q+W$
(3) $\Delta S_{sys}+\Delta S_{surr}\geq0$
(4) $\Delta G=\Delta H-T\Delta S$

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter: Thermodynamics (Chemistry)
Topic: Enthalpy and Hess's Law
Idea tested: Relation Between ΔH and ΔU

Same idea in other shifts

Asked 2× in all

2 Sep 2020, Shift 1 · Q46The internal energy change (in J) when 90 g of water undergoes complete evaporation at $100^\circ$ C is ______. (Given : $\Delta H_{vap}$ …EasyNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.