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    Question

    The pH range for the biofertilizers production as

    specified by Bureau of Indian Standard (BIS) should be
    A 4.50 to 5.50 Correct Answer Incorrect Answer
    B 6.50 to 7.50 Correct Answer Incorrect Answer
    C 5.50 to 6.50 Correct Answer Incorrect Answer
    D 7.50 to 8.50 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    The correct answer is B

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