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Predict the NMR spectra

Q.1.(b) Predict the NMR spectra of following

1HNMR spectra is different from 13C

Q.1. (a) How 1HNMR spectra is different from 13C? Explain with suitable example.

Ans.1. (a)Difference between 13C-NMR and 1HNMR:

Modern analytical techniques - Solved Paper 2009-2010

M.Pharma

First semester examination, 2009-2010

Modern analytical techniques

NMR spectroscopy

Q.5.(c) In NMR spectroscopy, explain shift correlation spectra- COSY and its application in simplifying complex HNMR spectra.

Ans.5. (c) COSY (Correlation SpectroscopY): COSY is a method of two-dimensional spectroscopy and also known as H-H correlation spectroscopy.  In a COSY experiment, the chemical shift range of the proton spectrum is plotted on both axes.

Write a note on size exclusion chromatography with its applications

Q.5. (b) Write a note on size exclusion chromatography with its applications

Ans.5. (b)Size exclusion chromatography:

Difference between conventional chromatography and HPLC.

Q.5. (a)Write principle difference between conventional chromatography and HPLC.
Discuss pumping system, stationary phases and detectors with applications.
Ans.5. (a) Difference between Conventional chromatography and HPLC

Recognition of molecular ion and its role in structure determination

Q.4. (b) Recognition of molecular ion and its role in structure determination

Basic fragmentation types, rules and factors influencing it

Q.4.(a) Basic fragmentation types, rules and factors influencing it.

Ans.4.(a) There are 3 basic types of fragmentation:

Spectrum editing DEPT spectra and applications

Q.3.(c) Spectrum editing DEPT spectra and applications

Ans.3. (c)DEPT

Simplification of complex proton NMR spectrum

Q.3. (b) Simplification of complex proton NMR spectrum

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