question_answer

Which one of the following has magnesium? [AIPMT 2000]

A) Vitamin \[{{B}_{12}}\]

B) Chlorophyll                   

C) Haemocyanin    

D) Carbonic anhydrase

Correct Answer: B

Solution :

[b] Formula of chlorophyll is . So, Mg is present in chlorophyll. It is the green colouring matter of leaves and green stems. Vitamin B12 contain cobalt. Haemocyanin contain copper and carbonic anhydrase