MCQ
The bronze medals are made up of:
- ACu and Zn
- BZn and Ni
- CCu and Sn
- D$Cu , Zn , Tn$
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| pH of ammonia at start | pH after excess sulphuric acid | |
| A | 11 | 7 |
| B | 7 | 13 |
| C | 11 | 2 |
| D | 3 | 8 |