MCQOPTIONS
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| 1. |
What is difference between making of furniture from wood and burning of wood? |
| A. | First is irreversible and second is reversible change |
| B. | First is physical and second is chemical change |
| C. | on cooling melted gold returns back to its original state |
| D. | First is periodic and second is non-periodic change |
| Answer» C. on cooling melted gold returns back to its original state | |