Question

5.2. A student dropped two metals, 'A' and 'B', in dilute hydrochloric acid. 'A' is yellow in colour and the
'B' is metallic grey. Both the metals 'A' and 'B' are used for making jewellery. But he observed that no
reactions take place in both the cases. Can you guess what are the two metals 'A' and 'B'?
​

Answer 1

Answer:

Metal B is silver

It doesn't react with any acids or solutions.

Metal A is gold

The strong hydrochloric acid will dissolve most of the iron and quartz, which typically surrounds a gold nugget, and leave the gold unharmed.