MCQOPTIONS
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| 1. |
Old paintings became discolourised due to |
| A. | Lead Sulphide PbS |
| B. | Lead Sulphate PbSO₄ |
| C. | Lead Chloride PbCl₂ |
| D. | Lead Oxide PbO |
| Answer» B. Lead Sulphate PbSO₄ | |