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UPSC Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank Environmental Chemistry

  • question_answer
          Salts of which of the following elements provide colours to fireworks? [IAS Prelim]

    A) Zinc and sulphur 

    B)          Potassium and mercury

    C) Strontium and barium

    D) Chromium and nickel

    Correct Answer: C

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