Rock X floats on water while rock Y wears easily when rubbed.
Which of the following options correctly identifies these rocks?
| X | Y | |
| A | Pumice | Granite |
| B | Granite | Chalk |
| C | Marble | Slate |
| D | Pumice | Chalk |
Rock X floats on water while rock Y wears easily when rubbed.
Which of the following options correctly identifies these rocks?
| X | Y | |
| A | Pumice | Granite |
| B | Granite | Chalk |
| C | Marble | Slate |
| D | Pumice | Chalk |