Q1. Which of these molecules best corresponds to the IR spectrum below?

A    
B    
C    
D    
E    

Q2. Which of the following compounds will give a molecular ion having m/z = an odd number?
A     CH₃CH₂OH
B     CH₂BrCl
C     CH₃CO₂H
D     CH₂CH₂NH₂
E     (CH₃)₂NCH₂C≡N

Q3. What class of compounds is most likely to give a fragment ion at m/z = M-18?
A     alkenes
B     cycloalkanes
C     alcohols
D     alkyl iodides
E     benzene derivatives

Q4. Which of the following compounds is most likely to have its base peak at m/z = 43?
A    CH₃(CH₂)₄CH₃
B    (CH₃)₃CCH₂CH₃
C    cyclohexane
D    (CH₃)₂CHCH(CH₃)₂

Q5. Which of the following statements regarding IR spectroscopy is correct?
A    IR radiation is higher in energy than UV radiation
B    IR spectra records the scattering of the radiation
C    IR spectra gives information about the ƛ max of the molecule
D    IR radiation is higher in wavelength than UV radiation

Q6. What is the condition for a molecule to be Microwave active?
A    Change in dipole movement
B    Change in polarisability
C    Permanent dipole movement
D    Isotopic labelling

Q7. Identify the correct statement.
A    NMR signals towards the left of the spectrum correspond to low chemical shift values.
B    NMR signals towards the right of the spectrum correspond to high chemical shift values
C    Chemical shift values are larger when shielding effects are greater
D    Chemical shift values are larger when deshielding effects are greater

Q8. The absorption intensity on an absorption spectrum tells us:
A    energy associated with a particular excitation.
B    the ease of transition.
C    the concentration of the absorbing part of the molecule.
D    both the ease of transition and the concentration of the absorbing part of the molecule.