MCQ
Which of following is the incorrect match?
- AInsulin - Zinc
- BHaemoglobin - Iron
- CVitamin B12 - Cobalt
- DChlorophyll - Chromium
Explanation:
Chlorophyll contains magnesium ion, encased in a large ring structure known as chlorine, derived from pyrrole.
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Statement $I :$ The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion.
Statement $II :$ The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product.
In the light of the above statements, choose the most appropriate answer from the options given below :