Question

24. A pale green solution of ferrous sulphate was taken in four separate test tubes marked I, II, III and IV. Pieces of Cu, Zn, and Al were dropped in test tubes II, III, and IV respectively. In which case(s) (a) the color of the ferrous sulphate solution will match with the color in the test tube (I) ? Give reason. (b) The color of ferrous sulphate solution will fade and black mass will be deposited on the surface of the metal?

Answer 1

Explanation:

(I)blue because cuso4 is blue in colour

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Answer 2

a) 2

b) in 1 and 3

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