| Answer | Crossword Clue |
|---|---|
| ASPHALT | Petroleum by-product |
| ISOPRENE | Petroleum processing by-product |
| COKE | Petroleum product |
| BENZOL | Petroleum product |
| KEROSENE | Petroleum product |
| NAPHTHA | Petroleum product |
| TAR | Petroleum product |
| PARAFFIN | Petroleum product. |
| OCTANE | Petroleum product. |
| OCTANE | Product of petroleum. |
| ETHENE | Product resulting from cracking petroleum |
| residua | residual product (as from the distillation of petroleum) |
