NTA Abhyas NEET2020ChemistryElectrochemistryPractice
A strip of copper is dipped into a colourless solution of the following four salts, which are placed separately in four different test tubes. Which solution will turn Blue?
Options
- AK N O 3
- BZ n S O 4
- CZ n ( N O 3 ) 2
- DA g N O 3
Correct answer
D. A g N O 3
Step-by-step solution
When a strip of copper is dipped in the solution of silver nitrate, the solution becomes blue. C u is placed above A g in electrochemical series. 2 A g N O 3 + C u → C u ( N O 3 ) 2 + 2 A g