Question

44. Three test tubes containing : Test tube X: 5
ml of HCI, test tube Y: 5 ml of HNO3, test
tube Z: 15 ml of HCI + 5 ml of HNO3. A small
piece of metal was added in all the three test
tubes. It dissolves only in Test tube Z. The
metal is?
(A) AI
(B) Au
(C) Cu
(D) Fe
​

Answer 1

Answer:

c. Cu

thanks for asking