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Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceOtherMediumConceptual

JEE Main 5 April 2026, Shift 1, Chemistry Q61

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

The correct statements about metal carbonyls are A. The metal-carbon bonds in metal carbonyls possess both σ\sigma and π\pi-character. B. Due to synergic bonding interactions between metal and CO ligand, the metal-carbon bond becomes weak. C. The metal-carbon σ\sigma bond is formed by the donation of lone pair of electrons on the carbonyl carbon into a vacant orbital of metal. D. The metal-carbon π\pi bond is formed by the donation of electrons from filled d-orbital of metal into vacant π∗\pi^* orbital of CO. Choose the correct answer from the options given below:
  1. (1)A and B Only
  2. (2)A, C and D OnlyOfficial answer
  3. (3)B and C Only
  4. (4)A and D Only

Official answer

Option 2

NTA final key.

Chapter
Coordination Compounds
Topic
Crystal Field Theory
Idea tested
Pi-Acceptor Ligands and Strong Field

Same topic in other shifts

All Crystal Field Theory questions
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  5. 6 Apr 2026, Shift 1 · Q61Match the LIST-I with LIST-II List-I (Electronic configuration of tetrahedral metal ion) | List-II (Crystal Field Stabilization Energy…MediumMatch the list
  6. 6 Apr 2026, Shift 1 · Q62Which of the following are true about the energy of the given d-orbitals of a tetrahedral complex? A. dxy=dxz>dx2−y2d_{xy}=d_{xz}>d_{x^2-y^2} B.…EasyOther

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.