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Subject :NSO    Class : Class 8

Sonia, a Class VIII student conducted an experiment where she took some metals in test tubes containing certain salt solutions.

In which of the test tube, the colour of the solution had changed?


Can anyone provide the explanation

Ans 1:

Class : Class 9
it is test tube three as it depends on the reactivity series.only in test tube 3 zinc displaces copper and in the rest the metals cant displace the alternate metal as the metal in the salt solution is more reactive than the other metal

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