This download link is referred from the post: RGUHS MHA Last 10 Years 2011-2021 Question Papers (1st Sem, 2nd Sem, 3rd Sem And 4th Sem)
3 X 10 = 30 Marks
- Explain Woodward-Fieser rule for absorption wavelength of hetero annular systems by taking suitable examples.
- What is 2-D INADEQUATE technique? By the use of this technique how the coupling between 13C-13C established. Explain with suitable example.
- Identify the structure of an organic compound consistent with the following spectral data:
Molecular formula :- C8H8Cl
IR Peaks : 3010, 2985, 1560, 1430, 701 cm-1
NMR :- (δ) 6.5, 1.9, 1.3
Mass spectra peaks (m/e) 142, 140, 105, 91, 65 - a) What is Mc-Lafferty rearrangement? Explain with suitable examples (Any two).
b) What do you understand by metastable peaks? How these are recognized in mass spectrum and what is their importance?
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SHORT ESSAY (Answer any Nine) 9 X 5 = 45 Marks
- Write the differences between DTA and TGA.
- Write the applications of DSC in pharmacy.
- Explain the mass fragmentation patterns and NMR split patterns in following compounds-
i) Toluene ii) 1-Bromo 2-Chloro-ethane - Write the importance of ELISA assay.
- Explain the principle and applications of supercritical fluid chromatography.
- How will you identify the following functional group in organic compound by IR:-
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-OH, -NH2, -COOR, -C=O, -CN. - Indicate the point of bond rupture in the molecule lead to each major mass fragment:
a) 2-methyl-2-butanol which has peaks for appreciable intensity at m/e=73, 59, 55.
b) t-butyl acetate with peak at m/e=101, 59, 57 and 55. - Write the applications of GC-MS.
- Give the important applications of 2-D NMR.
- Write the principle of Raman spectroscopy.
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This download link is referred from the post: RGUHS MHA Last 10 Years 2011-2021 Question Papers (1st Sem, 2nd Sem, 3rd Sem And 4th Sem)