Question

5 ml each of conc. HCL,HNO3 and a mixture of conc. HCL (15 ml )and Conc. HNO3
(5 ml) was taken in a separate test tube and labelled as X ,Y and Z respectively. a small pieces of metal put in each test tube , no change occurred in test tube X and Y but metal got dissolved in test tube Z . the metal could be

Answer 1

Answer:

aluminium

Explanation:

When aluminium reacts with conc. HNO3 it forms AlO2 and othwr by product. this reaction mainly gives aluminium oxide