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Important Questions for "organic chemistry":

[1]

  1. Explain the color of complexes using crystal field theory.
  2. Discuss the increasing order of energies of d-orbitals in square planar complexes.
  3. Which one is a stable base?

[2]

  1. An organic compound gives IR absorptions at 1715 cm and a single NMR peak at =2.1. Identify the compound.
  2. Calculate the value of chemical shift () in ppm for a proton resonating at 126 Hz downfield from TMS on a 60 MHz spectrophotometer.
  3. Interpret the structure of a compound given PMR peaks at 7.22, 3.59, 2.77, and 0.97.

[3]

  1. What is isolectronic species? Provide examples of molecular nitrogen and its isolectronic counterpart.
  2. Explain the uses of heteropoly anions in the petrochemical industry.
  3. Discuss the properties and role of Zeise's salt as a transition metal alkene complex.

[4]

  1. What is the major product formed when reacting a specified hydrocarbon with bromine?
  2. What products result from heating and specific alkene reactions?
  3. What are oxidation products from hydroboration reactions?

[5]

  1. Which one of the given complexes is square planar and why?
  2. How are binary formation constants determined using pH-metry?
  3. What factors affect the stability of coordination complexes? Provide examples.

[6]

  1. What is fullerene and its formula?
  2. Explain the acidic behavior of cyclopentadiene.
  3. Discuss the mechanism of neighboring group participation.

[7]

  1. Explain reversible inhibition in enzymes.
  2. What are photosynthetic pigments? Discuss the structure and photochemistry of the chlorophyll molecule.
  3. Discuss the structure and biological function of NAD+ and NADP coenzymes.

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