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For the second pair from the given options, select the relative word instead of the question mark which is related to each other just like the first pair:Copper : Nickel :: Ruby : _____.1. Cryron2. Telonite3. Alnico4. Sapphire

Answer» Correct Answer - Option 4 : Sapphire

Copper and Nickel are metals where Ruby and Sapphire are oxide of Aluminium.



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