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10th Class Science Metals and Non-metals / धातु और अधातु Question Bank Metals and Non-metals

  • question_answer
    Pure gold is soft. Which metal is added to 22 carat gold to make ornaments?

    A) Platinum                            

    B) Aluminium                        

    C) Copper                               

    D) Iron

    Correct Answer: C

    Solution :

    24 carat gold is soft and not suitable for making ornaments as it is not malleable. 22 parts of pure gold is alloyed with 2 parts of copper or silver to make ornaments.


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