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Important Questions for "organic chemistry":

[1]

  1. How many ions are formed from [Co(NH)]Cl?
  2. What is the application of Orgel diagrams in transition metal complexes?
  3. Which complex does not show d-d transition?

[2]

  1. A hydrocarbon with molecular mass 102 exhibits two PMR signals at 2.6 (5H) and 6.92 (1H). Deduce its structure.
  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. Identify the alcohol having molecular formula CHO that shows C-O stretching at 1120 cm.

[3]

  1. Discuss the characteristics of metal clusters in high oxidation states.
  2. Discuss thermodynamic stability and its relation to the stability constant.
  3. What is the role of charge transfer in determining the electronic transitions of complexes?

[4]

  1. What are structural isomers of alkenes?
  2. What are oxidation products from hydroboration reactions?
  3. Discuss conditions for elimination reactions under Hofmann and Saytzeff rules.

[5]

  1. Discuss the chelate effect of ligands and its thermodynamic origin for stability of metal complexes.
  2. Draw a character table for the H2O molecule.
  3. Explain the reaction of MeMgCl with SiCl4 to form methylsiliconhalides and describe subsequent hydrolysis and polymerization.

[6]

  1. Explain the acidic behavior of cyclopentadiene.
  2. Discuss the mechanism of neighboring group participation.
  3. Explain resonance, its conditions, and properties of resonance hybrids.

[7]

  1. Write a short note on crown ethers and their applications.
  2. Discuss the structure and biological function of NAD+ and NADP coenzymes.
  3. Write short notes on applications of immobilized enzymes, cytodextrins, host-guest chemistry, prochirality, and vitamin B-12.

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