JEE Main 25 July 2021, Shift 2, Chemistry Q54

Question 54 of 90 in this shift, Chemistry question 24 of 30, Section B.

A system does 200 J of work and at the same time absorbs 150 J of heat. The magnitude of the change in internal energy is ________ J. (Nearest integer)

Official answer

NTA final key.

Chapter: Thermodynamics (Chemistry)
Topic: Enthalpy and Hess's Law
Idea tested: Sign Conventions for Heat Flow

Same idea in other shifts

Asked 2× in all

10 Apr 2023, Shift 2 · Q83The number of endothermic process/es from the following is ____________ A. $\mathrm{I_2}$ (g) $\rightarrow$ 2I (g) B. HCl (g)…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 108 of the 174 JEE Main shifts held from 2017 to 2026.