MCQOPTIONS
Saved Bookmarks
| 1. |
Which of the following inhibitor is used for steel in the water? |
| A. | Sodium silicate |
| B. | Alkali metal nitrates |
| C. | Benzoic acid |
| D. | 2% boron trifluoride |
| Answer» D. 2% boron trifluoride | |