Question

The statement which is not correct, is

• A. chlorophyll is responsible for the synthesis of carbohydrates in plants
• B. the compound formed by the addition of oxygen to haemoglobin is called oxyhaemoglobin
• C. acetyl salicyclic acid is known as aspirin
• D. the metal ion present in vitamin $B_{12}$ is $Mg^{2+}$

Answer 1

Answer: (D)

the metal ion present in vitamin $B_{12}$ is $Mg^{2+}$

Answer 2

Vitamin $B_{12}$ or cyanocobalamine contains cobalt, not magnesium.