Subject :NSO Class : Class 8
Materials ‘X’ and ‘Y’ in the figure are
| X | Y | |
| A | Aluminium foil | Pencil lead |
| B | Pencil lead | Copper block |
| C | Pencil lead | Wooden block |
| D | Copper block | Pencil lead |
Whatâs the answer to this?
Ans 1:
Class : Class 9