Alizarine dye obtained from the root of madder plant is Anthra quinone derivative. Its structure corresponds to-

• Correct answer
  A

  1,2- dihydroxy anthraquinone
• B

  2, 3- dihydroxy anthraquinone
• C

  1, 4- dihydroxy anthraquinone.
• D

  1- hydroxyl anthraquinone.

Solution

Alizarin is 1,2-dihydroxy anthraquinone having following structure.

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