McqMate
| Q. |
In which year was the Ferrosand process patented? |
| A. | 1960 |
| B. | 1965 |
| C. | 1970 |
| D. | 1975 |
| Answer» B. 1965 | |
| Explanation: the manganese greensand process has been used in the united states since the 1950s. during the early years of its use, hungerford & terry, inc. of clayton, new jersey, worked to improve the process and eventually developed the ferrosand® cr process, patented in 1965. | |
View all MCQs in
Water Supply EngineeringNo comments yet