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    Question

    Blue chaff disease of oats is due to deficiency

    of:
    A Copper Correct Answer Incorrect Answer
    B Molybdenum Correct Answer Incorrect Answer
    C Boron Correct Answer Incorrect Answer
    D Manganese Correct Answer Incorrect Answer

    Solution

    Yellow spots of citrus, blue chaff of oats and whiptail of cauliflower, broccoli and brussels are some of the classical examples of Mo-deficiency. 

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