Which from following pairs of compounds is an example of metamerism?

• A

  n-Butane and 2-Methylpropane
• B

  Dimethyl ether and ethyl alcohol
• C

  But-2-ene and But-1-ene
• Correct answer
  D

  Ethoxyethane and methoxypropane

Solution

Compounds having different units of alkyl groups along the same polyvalent functional group are known as metamers \& phenomenon is metamerism.

Hence, the correct answer is option: 'D'.