1.

How will you differentiate sodium metal and zinc metal given in the test tubes in the laboratory ? You are advised not to touch any of the metals. Identify the type of reaction used.

Answer»

Solution :First of all, I add WATER in both the test tubes and observe the reaction. The test TUBE in which vigorous reaction takes PLACE contains Na metal, which reacts and forms `H_(2)`(g) gas in the test tube.
`2NA+ 2H_(2)O to 2NaOH+ H_(2)`
This iscombination and exothermic


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