Multiple choice

Which of the following statements is not correct?

  1. Copper can be formed into wires.

  2. Aluminium can be beaten into thin sheets.

  3. The solution of magnesium oxide turns red litmus blue.

  4. Copper wires are used in electric circuits.

  5. Gold, in contact with lemon juice, turns blackish in colour.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Gold does not react with citric acid as it is the least reactive metal.

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