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JAMB Chemistry 1984 Question 43

Question 43

Hydrocarbons

Alkanes

  1. A.are all gases
  2. B.have the general formula CnH2n+2O
  3. C.contain only carbon and hydrogen
  4. D.are usually soluble in water
  5. E.are usually active compounds.
Show the answer and explanation

Answer: C (contain only carbon and hydrogen)

Explanation

Alkanes are hydrocarbons, made of carbon and hydrogen only, with the general formula CnH2n+2. They are insoluble in water and fairly unreactive.