1.

Three test tubes containing: Test Tube X : 5ml of HCl Test Tube Y ; 5ml of HNO3 Test Tube Z : 15 ml of HCl + 5ml 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) Al (B) Au (C) Cu (D) Ag

Answer»

Correct option is (B) Au



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