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Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceOtherHardConceptual

JEE Main 5 April 2026, Shift 2, Chemistry Q61

Question 61 of 75 in this shift, Chemistry question 11 of 25, Section A.

Identify the correct statements from the following A. [Fe(C2O4)3]3−\mathrm{[Fe(C_2O_4)_3]^{3-}} is the most stable complex among [Fe(OH)6]3−\mathrm{[Fe(OH)_6]^{3-}}, [Fe(C2O4)3]3−\mathrm{[Fe(C_2O_4)_3]^{3-}} and [Fe(SCN)6]3−\mathrm{[Fe(SCN)_6]^{3-}} B. The stability of [Cu(NH3)4]2+\mathrm{[Cu(NH_3)_4]^{2+}} is greater than that of [Cu(en)2]2+\mathrm{[Cu(en)_2]^{2+}} C. The hybridization of Fe in K4[Fe(CN)6]\mathrm{K_4[Fe(CN)_6]} is d2sp3d^2sp^3 D. [Fe(NO2)3Cl3]3−\mathrm{[Fe(NO_2)_3Cl_3]^{3-}} exhibits linkage isomerism E. NO2−\mathrm{NO_2^-} and SCN−\mathrm{SCN^-} ligands are NOT ambidentate ligands Choose the correct answer from the options given below :
  1. (1)A, B, C, D and E
  2. (2)B, C and D only
  3. (3)A, C and D onlyOfficial answer
  4. (4)A, C and E only

Official answer

Option 3

NTA final key.

Chapter
Coordination Compounds
Topic
Coordination Isomerism
Idea tested
Ambidentate Ligands in Linkage Isomerism

Same topic in other shifts

All Coordination Isomerism questions
  1. 2 Apr 2026, Shift 1 · Q715.335.33 g of CrCl3⋅6H2O\mathrm{CrCl_3{\cdot}6H_2O}, which is a 1:31:3 electrolyte, is dissolved in water and is passed through a cation exchanger.…HardNumerical value
  2. 2 Apr 2026, Shift 2 · Q61Which of the following complexes will show coordination isomerism? A. [Ag(NH3)2][Ag(CN)2][Ag(NH_3)_2][Ag(CN)_2] B. [Co(NH3)6][Cr(CN)6][Co(NH_3)_6][Cr(CN)_6] C.…MediumSingle correct
  3. 6 Apr 2026, Shift 2 · Q71An excess of AgNO3\mathrm{AgNO_3} is added to 100 mL of a 0.05 M solution of tetraaquadichloridochromium (III) chloride. The number of moles…EasyNumerical value
  4. 3 Apr 2025, Shift 1 · Q72The number of optical isomers exhibited by the iron complex (A) obtained from the following reaction is ______.…MediumNumerical value
  5. 4 Apr 2025, Shift 2 · Q75A metal complex with a formula MCl4⋅3NH3\mathrm{MCl_4\cdot3NH_3} is involved in sp3d2\mathrm{sp^3d^2} hybridisation. It upon reaction with excess of…MediumNumerical value
  6. 7 Apr 2025, Shift 1 · Q62An octahedral complex having molecular composition Co.5NH3.Cl.SO4\mathrm{Co.5NH_3.Cl.SO_4} has two isomers A and B. The solution of A gives a white…EasySingle correct

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.