MCQOPTIONS
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| 1. |
When two surfaces are coated with a lubricant, then they [AFMC 1998, 99; AIIMS 2001] |
| A. | Stick to each other |
| B. | Slide upon each other |
| C. | Roll upon each other |
| D. | None of these |
| Answer» C. Roll upon each other | |