JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 27 June 2022, Shift 1, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

Metal deficiency defect is shown by

\mathrm{Fe_{0.93}O}

. In the crystal, some

\mathrm{Fe^{2+}}

cations are missing and loss of positive charge is compensated by the presence of

\mathrm{Fe^{3+}}

ions. The percentage of

\mathrm{Fe^{2+}}

ions in the

\mathrm{Fe_{0.93}O}

crystals is __________. (Nearest integer)

Official answer

NTA final key.

Chapter: The Solid State
Topic: Solid State Defects
Idea tested: Non-Stoichiometric Composition Calculations

Same topic in other shifts

All Solid State Defects questions

6 Apr 2024, Shift 1 · Q64Which of the following material is not a semiconductor.EasySingle correct
31 Jan 2024, Shift 2 · Q84The values of conductivity of some materials at 298.15 K in Sm $^{-1}$ are $2.1 \times 10^{3}$ , $1.0 \times 10^{-16}$ , $1.2 \times 10$ ,…MediumNumerical value
28 Jun 2022, Shift 1 · Q61The incorrect statement about the imperfections in solids is :EasySingle correct
4 Aug 2021, Shift 1 · Q31Match List I with List II List I List II A. Frenkel defect I. CsCl B. Schottky defect II. Pink LiCl C. Impurity defect III. ZnS D. Metal…MediumMatch the list
26 Aug 2021, Shift 1 · Q31Given below are two statements : Statement I : Frenkel defects are vacancy as well as interstitial defects. Statement II : Frenkel defect…EasyTwo statements
27 Aug 2021, Shift 1 · Q32Match items of List - I with those of List - II : List - I (Property) List - II (Example) (a) Diamagnetism (i) MnO (b) Ferrimagnetism (ii)…EasyMatch the list

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.