ScienceClass 10CBSE
Q
Which of the following is used for dissolution of gold? (a) Hydrochloric acid (b) Sulphuric acid (c) Nitric acid Aqua regia
A
- Solution:
Answer is (d) Aqua regia
Explanation:
Gold is a nobel metal which will not react even with strong acids, hence aqua regia which is a mixture of Nitric and Hydro chloric acid in the ratio 1:3 is used for dissolution of gold.