Metal Extraction and Application

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Multiple Choice

Which of the following statements is/are false?
A. Copper is used for making anticorrosive wires that are used in electrical industries.
B. Constantan consists of 60% copper and 40% tin.
C. In the manufacturing of dye-stuffs, paints zinc dust is used as reducing agent.

  1. Only A
  2. Only B
  3. Only C
  4. Only A and B
  5. Only B and C
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