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  5. The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I

JEE Main & Advanced Chemistry The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I Question Bank Carbon Family

  • question_answer
    Percentage of lead in lead pencil is [CBSE PMT 1999]

    A) Zero

    B) 20

    C) 80

    D) 70

    Correct Answer: A

    Solution :

    Not Available


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