Saved Bookmarks
| 1. |
Fluorogypsum, used in super sulphated cement or as binding agents, is a waste product of manufacture of:(a) Fluorine(b) Thermal power(c) Hydrofluoric acid(d) Phosphoric acid |
|
Answer» Correct option is (c) Hydrofluoric acid Explanation: Phosphogypsum is a waste product of Phosphoric acid manufacture and flyash is of thermal power plants. Fluorogypsum is purified by neutralising its acidity and then can be used for bricks, tiles, plastering, etc. |
|