KVPY 2020-21 SB SX Exam Previous Papers

Question : 53 of 120

Marks: +1, -0

Upon dipping a copper rod, the aqueous solution of the salt that can turn blue is :-

Solution:

2AgNO_3 + Cu \ {────▶} Ag + Cu(NO_3 ) _2

Metal can reduce that metal cation which is placed below it in reactivity series.

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