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      Question

      What is the metal composition of the commemorative coins

      announced in 2025 for Prof. Swaminathan and Make in India?
      A 50% copper, 30% silver, 10% nickel, 10% zinc Correct Answer Incorrect Answer
      B 60% silver, 30% copper, 5% zinc, 5% nickel Correct Answer Incorrect Answer
      C 50% silver, 40% copper, 5% nickel, 5% zinc Correct Answer Incorrect Answer
      D 40% silver, 40% copper, 10% nickel, 10% zinc Correct Answer Incorrect Answer
      E 55% silver, 35% copper, 5% nickel, 5% zinc Correct Answer Incorrect Answer

      Solution

      Both commemorative coins β€” one for Prof. M.S. Swaminathan and the other for the Make in India initiative β€” are made of a quaternary alloy: 50% silver, 40% copper, 5% nickel, and 5% zinc.

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