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| 1. |
Petroleum franction of which of thr following compositions can be used as a lubricating oil ?A. `C_5-C_7`B. `C_(10)-C_(16)`C. `C_(20)-C_(24)`D. `C_(30)-C_(40)` |
| Answer» The composition of lubricating oil is hydrocarbons`C_(20)-C_(24)` due to high boiling point | |