1.

Identify the acid used in the purification of metals like gold and silver is

Answer»

sulphuric ACID
phosphoric acid
hydrochloric acid
NITRIC acid

Solution :Nitric acid is used in the purification of metals LIKE gold and SILVER since it dissolves the impurities like VARIOUS meta oxides present on the surface of gold (or) Gold being insoluble in `HNO_(3)`, remains insoluble.


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