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CBSE Notes 2011-2012

2 mL each of concentrated HC1, HN03 and a mixture of concentrated HC1 and concentrated HN03 in the r...

Multiple choice question

2 mL each of concentrated HC1, HN03 and a mixture of concentrated HC1 and concentrated HN03 in the ratio of 3 : 1 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 C respectively. The metal could be

unknown

A1

unknown

Au

unknown

Cu

unknown

Ag