JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumMulti-step

JEE Main 25 July 2021, Shift 1, Chemistry Q60

Question 60 of 90 in this shift, Chemistry question 30 of 30, Section B.

Three moles of AgCl get precipitated when one mole of an octahedral co-ordination compound with empirical formula

\mathrm{CrCl_3.3NH_3.3H_2O}

reacts with excess of silver nitrate. The number of chloride ions satisfying the secondary valency of the metal ion is _________.

Official answer

NTA final key.

Chapter: Coordination Compounds
Topic: Coordination Isomerism
Idea tested: Chemical Tests for Ionization Isomers

Same topic in other shifts

All Coordination Isomerism questions

2 Apr 2026, Shift 1 · Q71 $5.33$ g of $\mathrm{CrCl_3{\cdot}6H_2O}$ , which is a $1:3$ electrolyte, is dissolved in water and is passed through a cation exchanger.…HardNumerical value
2 Apr 2026, Shift 2 · Q61Which of the following complexes will show coordination isomerism? A. $[Ag(NH_3)_2][Ag(CN)_2]$ B. $[Co(NH_3)_6][Cr(CN)_6]$ C.…MediumSingle correct
5 Apr 2026, Shift 2 · Q61Identify the correct statements from the following A. $\mathrm{[Fe(C_2O_4)_3]^{3-}}$ is the most stable complex among…HardOther
6 Apr 2026, Shift 2 · Q71An excess of $\mathrm{AgNO_3}$ is added to 100 mL of a 0.05 M solution of tetraaquadichloridochromium (III) chloride. The number of moles…EasyNumerical value
3 Apr 2025, Shift 1 · Q72The number of optical isomers exhibited by the iron complex (A) obtained from the following reaction is ______.…MediumNumerical value
4 Apr 2025, Shift 2 · Q75A metal complex with a formula $\mathrm{MCl_4\cdot3NH_3}$ is involved in $\mathrm{sp^3d^2}$ hybridisation. It upon reaction with excess of…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.