2 ml each of concentrated HCl, HNO3 and a mixture of concentrated hydrochloric acid and
Concentrated nitric acid in the ratio of 3:1were 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
dissolved in test tube C. The metal could be:
A) Al
B) Au
C) Pt
D) Cu
Concentrated nitric acid in the ratio of 3:1were 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
dissolved in test tube C. The metal could be:
A) Al
B) Au
C) Pt
D) Cu