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Important Questions for "organic chemistry":

[1]

  1. When crystal field splitting energy is and pairing energy is P, when are low-spin complexes formed?
  2. Explain the spin-only and spin+orbital magnetic moments of [CrCl].
  3. Which one is not a hard base?

[2]

  1. Describe the decreasing order of 8-values for R-CH3, Ar-H, and R-CH=CH2 hydrogens.
  2. A hydrocarbon with molecular mass 102 exhibits two PMR signals at 2.6 (5H) and 6.92 (1H). Deduce its structure.
  3. Discuss the PMR signals for CH3-CH2-CH-CH2-COOH.

[3]

  1. What is isolectronic species? Provide examples of molecular nitrogen and its isolectronic counterpart.
  2. Explain the association and dissociation mechanisms of base hydrolysis reactions.
  3. What is the role of Pi-acceptor ligands in coordination chemistry?

[4]

  1. Discuss the outcome of a reaction under heating conditions.
  2. Which alkenes are most stable for electrophilic addition?
  3. Analyze reaction intermediates and products for elimination processes.

[5]

  1. What is the fundamental difference between crystal field theory and ligand field theory?
  2. What is Bent's rule? Provide an example.
  3. How are binary formation constants determined using pH-metry?

[6]

  1. Discuss types and stabilities of carbenes.
  2. Why is mesotartaric acid optically inactive despite having two chiral carbons?
  3. Write notes on the Von Richter reaction and Gattermann-Koch reaction.

[7]

  1. Explain reversible inhibition in enzymes.
  2. What are photosynthetic pigments? Discuss the structure and photochemistry of the chlorophyll molecule.
  3. Discuss the structural features and mechanism carried out by xanthine oxidase.

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