पीतल, कांसा, जर्मन सिल्वर में कौन सब में पाया जाता है-
Which of the following is found in brass, bronze, German silver?

  • 1

    तांबा

  • 2

    सिल्कन

  • 3

    कार्बन

  • 4

    कार्बन

Answer:- 1

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