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Railways Sample Paper RRB (Group D) Sample Test Paper-10

  • question_answer
    Which one of the following is present in chlorophyll which gives a green colour to plant leaves?

    A)  Calcium           

    B)  Magnesium

    C)  h-on                

    D)  Manganese

    Correct Answer: B

    Solution :

    [b] Chlorophyll is a tetrapyrole ring system that chelate the magnesium ion. The tetrapyrole ring system that chelates this magnesium shows a conjugated double bond. This bond provide the light absorption feature to chlorophyll and gives it green colour.


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