Four test tube smarked I, II, III and IV were taken 20 ml of \[\mathbf{A}{{\mathbf{l}}_{\mathbf{2}}}{{\mathbf{(S}{{\mathbf{O}}_{\mathbf{4}}}\mathbf{)}}_{\mathbf{3}}}\] solution in water was poured in each of the test tubes. A piece of zinc metal was placed in test tube I, an iron nail was put in test tube II, copper turnings were put in test tube III and a clean aluminium strip was placed was placed in test tube IV. No change was observed in any of the test tubes. The correct inference drawn is: |
(a) Copper is more reactive than Aluminium. |
(b) Zinc is more reactive than Aluminium. |
(c) Zinc is more reactive than Copper. |
(d) Zinc, Iron and Copper are less reactive than Aluminium. |
Answer:
(d) Zinc, Iron and Copper are less reactive than Aluminium.
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