Which of the following acids on heating loses a molecule of H_(2)O to form an alpha, beta- unsaturated acid ?

Which of the following acids on heating loses a molecule of H_(2)O to

1.	Which of the following acids on heating loses a molecule of H_(2)O to form an alpha, beta- unsaturated acid ?
Answer» `CH_(3)CHOHCOOH` `HOCH_(2)COOH` `CH_(3)CHOHCH_(2)COOH` `HOCH_(2)CH_(2)COOH` Solution :SEE A-Level Informationof ACIDS