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5 mL each of concentrated HCl, HNO(3) an...

5 mL each of concentrated HCl, `HNO_(3)` and a mixture of concentrated `HNO_(3)` (5 mL) were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube. The metal could be

A

Al

B

Au

C

Cu

D

Ag

Text Solution

Verified by Experts

The correct Answer is:
B
A mixture conc. HCl and conc. `HNO_(3)` (3 : 1 by volume is known as Aqua Regia. It dissovles metal Gold.
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DINESH PUBLICATION-METALS AND NON-METALS-MCQ
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