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 \[2{{p}_{{{x}^{-}}}}2{{p}_{y}}\] is \[2{{p}_{x}}\].
Correct Answer: D
Solution :
Vitamin \[COC{{l}_{2}}\] or cyanocobalamine contains cobalt, not magnesium.
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