MCQOPTIONS
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| 1. |
A metallic piece (X) is dropped into copper sulphate solution. After some time, the blue colour of the solution changes to green. The change which has occurred is |
| A. | Physical and reversible change |
| B. | Physical and irreversible change |
| C. | Chemical and reversible change |
| D. | Chemical and irreversible change. |
| Answer» E. | |