Class XII

Boiling points of alcohols and phenols are higher than
  1. hydrocarbons
  2. haloalkanes and haloarenes of comparable molecular masses
  3. ethers
  4. all of these
Alcoholic compounds react
  1. only as electrophiles
  2. both as nucleophiles and electrophiles.
  3. Only as nucleophiles.
  4. None of these
Glycerol is
  1. Propane – 1, 2, 3 – triol
  2. Propane – 1, 2, 3 – ol
  3. 1, 2, 3 – trihydroxy propane
  4. 1, 2, 3 – hydroxy propane
n – propyl bromide on treating with alcoholic KOH produces
  1. propane
  2. propanol
  3. propene
  4. propyne
Alcohols have high boiling points because of
  1. -------------------------------------------------------------------------------- increase in van der Waals forces
  2. All of these
  3. presence of intermolecular hydrogen bonding in them
  4. increase in the number of carbon atoms
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