Class X

Which of the following is used to oxidise ethanol to ethanoic acid?
  1. Alkaline KMnO4
  2. Conc. H2SO4
  3. Acidified K2Cr2O7
  4. All of above
The isomeric pair is
  1. ethane and propane
  2. propane and butane
  3. ethane and ethane
  4. butane and 2-methyl propane
Which one of the following is an unsaturated hydrocarbon?
  1. Acetylene
  2. Butane
  3. Propane
  4. Decane
Which is denatured spirit?
  1. ethanol only
  2. ethanol and methanol (50%)
  3. ethanol and methanol (5%)
  4. methanol only
Which of the following represents alkynes?
  1. -C−C-
  2. -C=C-
  3. -C≡C-
  4. none of these
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