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    Question

    Aqua regia is a mixture

    of:
    A HCl & HNOโ‚ƒ Correct Answer Incorrect Answer
    B HCl & Hโ‚‚SOโ‚„ Correct Answer Incorrect Answer
    C Hโ‚‚SOโ‚„ & HNOโ‚ƒ Correct Answer Incorrect Answer
    D Hโ‚‚SOโ‚„ & HFโ‚„ Correct Answer Incorrect Answer

    Solution

    Aqua regia is a mixture of 3 parts hydrochloric acid (HCl) and 1 part nitric acid (HNOโ‚ƒ), used to dissolve noble metals like gold and platinum.

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