Describe different ionisation methods involved in mass spectrometry.

Interpret the NMR spectra of the following compounds. Give the expected  values and
explain your answer.

What is meant by a base peak and a molecular ion peak in mass spectrum? How is
mass spectrometry used in finding out mass of a compound? Explain.

 Differentiate between COSY and and HETCOR experiments in 2D NMR
spectroscopy.

What kind of information is available from UV, IR, NMR and Mass spectra of an
organic compound. Explain with the help of an example. 

How does conjugation affect the electronic transitions in organic molecules? Explain
showing its effect on absorption maxima with the help of an example.

Explain the basis of 1H NMR spectroscopy. Which of the atomic nucleus out of 12C,
2H, 19F is not NMR active and which is NMR active? Explain you answer.