Class XII

Phenol is less acidic than ______________.
  1. ethanol
  2. o – nitrophenol
  3. o – methoxyphenol
  4. methylphenol
Aldehydes are reduced to the corresponding alcohols by addition of hydrogen in the presence of catalysts to form
  1. -------------------------------------------------------------------------------- secondary alcohols
  2. tertiary alcohols
  3. None of these
  4. primary alcohols
Arrange the following compounds in increasing order of their acid strength: Propan – 1 – ol, 2,4,6 – trinitrophenol, 3 – nitrophenol, 3,5 – dinitrophenol,phenol, 4 – methylphenol.
  1. 4 – methylphenol, phenol, propan – 1 – ol,3 – nitrophenol, 3,5 – dinitrophenol,2,4, 6 – trinitrophenol.
  2. Propan – 1 – ol, 4 – methylphenol, phenol, 3 – nitrophenol, 3,5 – dinitrophenol,2,4, 6 – trinitrophenol.
  3. 3, 5 – dinitrophenol,2,4, 6 – trinitrophenol, 3 – nitrophenol ,Propan – 1 – ol, 4 – methylphenol,.
  4. 3 – nitrophenol, 3,5 – dinitrophenol,2,4, 6 – trinitrophenol, Propan – 1 – ol, 4 – methylphenol
A hydrocarbon C5H10 does not react with chlorine in dark but gives a single monochloro compound C5H9Cl in bright sunlight. The hydrocarbon is
  1. -------------------------------------------------------------------------------- Cycloalkyne
  2. Cyclopentane
  3. Cyclopentene
  4. Cyclosporine
One of the following alcohol is a poison and Ingestion of even small quantities can cause blindness and large quantities causes even death.
  1. -------------------------------------------------------------------------------- methanol
  2. Iso-propanol
  3. propanol
  4. ethanol
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LKG - 12th

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