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Railways General Science & Technology Metals and Non-metals / धातु और अधातु Sample Paper Properties and Uses of Metals and Non-Metals Sample Test Paper-19

  • question_answer
    Black lead is

    A)  An allotrope of lead

    B)  a lead base pigment

    C)  Graphite          

    D)  a kind of charcoal

    Correct Answer: D

    Solution :

    [d] Graphite is also known as black lead.


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