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Friday, 9 October

JEE Main 2024 · ChemistryMultiple choiceAssertion–reasonMediumApplication

JEE Main 9 April 2024, Shift 1, Chemistry Q69

Question 69 of 90 in this shift, Chemistry question 9 of 30, Section A.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The total number of geometrical isomers shown by [Co(en)2Cl2]+[\mathrm{Co(en)_2Cl_2}]^+ complex ion is three. Reason (R) : [Co(en)2Cl2]+[\mathrm{Co(en)_2Cl_2}]^+ complex ion has an octahedral geometry. In the light of the above statements, choose the most appropriate answer from the options given below :
  1. (1)Both (A) and (R) are correct and (R) is the correct explanation of (A)
  2. (2)Both (A) and (R) are correct but (R) is not the correct explanation of (A)
  3. (3)(A) is correct but (R) is not correct
  4. (4)(A) is not correct but (R) is correctOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Coordination Compounds
Topic
Coordination Isomerism
Idea tested
Optical Activity in M(AA)2B2 Complexes

Same idea in other shifts

Asked 2× in all
  1. 30 Jan 2024, Shift 2 · Q86Number of complexes which show optical isomerism among the following is ________. cis-[Cr(ox)2Cl2]3−cis\text{-}[\mathrm{Cr(ox)_2Cl_2}]^{3-},…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.