/

Learn

Friday, 9 October

/

JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 13 April 2023, Shift 2, Chemistry Q88

Question 88 of 90 in this shift, Chemistry question 28 of 30, Section B.

See the following chemical reaction:

\mathrm{Cr_2O_7^{2-}} + X\,\mathrm{H^+} + 6\,\mathrm{Fe^{2+}} \rightarrow Y\,\mathrm{Cr^{3+}} + 6\,\mathrm{Fe^{3+}} + Z\,\mathrm{H_2O}

The sum of X, Y and Z is ______

Official answer

23

NTA final key.

Chapter: Redox Reactions
Topic: Redox Reactions
Idea tested: Ion-Electron Acidic

Same idea in other shifts

Asked 2× in all

31 Jan 2024, Shift 2 · Q86Number of moles of $\mathrm{H^+}$ ions required by 1 mole of $\mathrm{MnO_4^-}$ to oxidise oxalate ion to $\mathrm{CO_2}$ is ________.MediumNumerical 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.