Multiple choice

What is aqua regia?

  1. Mixture of 1 part of concentrated HCl and 3 part of concentrated HNO3.

  2. Mixture of 3 part of concentrated HCl and 1 part of concentrated HNO3.

  3. Mixture of 1 part of dilute HCl and 3 part of concentrated HNO3.

  4. Mixture of 3 part of concentrated HCl and 1 part of dilute HNO3.

  5. Mixture of 1 part of dilute HCl and 3 part of dilute HNO3.
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B Correct answer
Explanation

 Mixture of 3 part of concentrated HCl and 1 part of concentrated HNO3.

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