Question 15 Marks
| Column A | Column B |
| 1. Borosilicate glass | a. Oxide of specific metal. |
| 2. Alkali silicate glass | b. Sand, soda, limestone, barium oxide and boron. |
| 3. Lead glass | c. Sand and soda. |
| 4. Optical glass | d. Sand, soda, limestone and lead oxide. |
| 5. Coloured glass | e. Sand, soda, boric acid and aluminium oxide. |
Answer
View full question & answer→| Column A | Column B |
| 1. Borosilicate glass | e. Sand, soda, boric acid and aluminium oxide. |
| 2. Alkali silicate glass | c. Sand and soda. |
| 3. Lead glass | d. Sand, soda, limestone and lead oxide. |
| 4. Optical glass | b. Sand, soda, limestone, barium oxide and boron. |
| 5. Coloured glass | a. Oxide of specific metal. |