NCERT Exemplar Solutions
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Multiple Choice Questions
Question 21

Question. 21

Which of the following is used for dissolution of gold?

(a)

Hydrochloric acid

(b)

Sulphuric acid

(c)

Nitric acid

(d)

Aqua regia

Detailed Answer with Explanation:

Steps: Gold is dissolved by aqua regia (a mixture of concentrated HCl and HNO₃) which produces reactive species that dissolve gold.