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UPSC Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank Elements Classification and Chemical Bonding

  • question_answer
          The rusting of iron nail [CDS]

    A) decreases its weight

    B) increases its weight

    C) does not affect weight but iron is oxidised

    D) does not affect weight but iron is reduced

    Correct Answer: B

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