1. Pick the correct statement regarding geminal
coupling
(a) Electron donation makes the coupling less
positive
(b) Electron withdrawal group makes the J more
positive
(c) Geminal coupling constant usually have
negative J values.
(d) As the dihedral angle decreases the Jgem
decreases

2. The minimum energy required for the appearance
of fragment ion is known as its ____________
potential.
(a) Reduction           (b) Appearance
(c) Condensation     (d) Ionization

3. Separation of the ions on the basis of their
mass/charge value takes place in the ____________.
(a) collector slits       (b) Amplifier
(c) Analyzer               (d) Recorder

4. Photochemical reaction involving fission of
?- carbon and carbonylic carbon followed by
elimination is known as ____________.
(a) Photo reduction        (b) Norrish type - II
(c) Norrish type-I            (d) None of the above

5. In indole the electrophilic substitution occurs at
____________.
(a) C-4            (b) C-5
(c) C-6            (d) C-3