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Railways PYQCBT 1 2016

RRB NTPC · Question 68

What is the purity of the minimum thousandth of sterling silver? A. 916 B. 925 C. 935 D. 950

  1. C

  2. B

  3. A

  4. D

Show answer & explanation

Answer: (B) B

Explanation

Sterling silver is at least 92.5% pure silver (925 parts per thousand), the rest usually copper.