| Mrignayani was doing the experiment of comparing reactivity of metals in the laboratory. She was given aluminium metal and was told to check reactivity by using four solutions as shown below. She would observe that reaction takes place in: |
(A)  (B)  |
(C)  (D)  |
| (a) A and B |
| (b) B, C and D |
| (c) A, C and D |
| (d) C and D |
Answer:
(b) B, C and D
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