Multiple choice

Which of the following statements is not true?

  1. Wrought iron is the purest form of iron.

  2. Percentage of silver in German silver is about 10 percent.

  3. Solder is an alloy of tin and lead.

  4. Transition metal present in Vit. B12 is cobalt.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

German silver is a copper alloy with nickel and often zinc. German silver is named for its silvery appearance, but it contains no elemental silver.

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