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Some of the Expected Thoretical Questions from Spectroscopy-II

 Q 1: Explain the effect of conjugation, hydrogen bonding and steric factor on vibrational frequency?

Q 2: Application of Far, Near and Mid-IR spectroscopy?

Q 3: Application of NMR Spetcroscopy?

Q 4: Applications of Mass Spectrometry or its advantages over other spectroscopic techniques?

Q 5: Why Carbon NMR is less sensitive than proton NMR or disadvantages of Carbon NMR over proton NMR

Q 6: Advantages of FT-NMR over CW-NMR or difference between FT-NMR and CW -NMR

Q 7: Short Notes on Following:

a. McLafferty rearrangement

b. Nitrogen rule.

c. EI (Electron Impact Ionization)

d. CI (Chemical Ionization)

e. FAB (Fast Atom Bombardment)

f. Metastable peak

g. Base Peak

h. DEPT

i. HSQC

j. HMBC

k. INADEQUATE

l. Instrumentation of Mass spectrometry

m. Proton decoupled Carbon NMR or Noise decoupled carbon NMR

n. Off-resonance proton decoupled Carbon NMR

o. Fourier Transform Carbon NMR OR Pulsed NMR 

p. Nuclear Overhauser Effect (NOE)

q. NOESY

r. Chemical shift

s. Instrumentation of NMR

t. Relaxation Processs (both Spin-spin and spin -lattice relaxation)

u. Magnetic Anisotropy (for alkenes, alkynes, aromatic compounds and aldehydes with diagrams)

v. Mechanism of spin-spin interaction or splitting of signals

w. Coupling constant and factors affecting it

x. Long range coupling

y. Simplification of complex spectra (High Field strength, Double irradiation or spin-spin decoupling, Use of Shift Reagents)

z. alpha-Cleavage

aa. β-Cleavage

 

 

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