McqMate
| Q. |
Which of the following gas, should never be used as the carrier of abrasives? |
| A. | nitrogen |
| B. | co2 |
| C. | oxygen |
| D. | air |
| Answer» C. oxygen | |
| Explanation: oxygen should not be used as carrier because it causes a violent chemical reaction with abrasives or work piece. | |
View all MCQs in
Unconventional Machine Process (UMP)No comments yet