Q. Which among the following compound is most commonly used in the Photochromic lenses? (Solved)
1. Potassium Dichromate
2. Silver Chloride
3. Potassium ferrate
4. Ferric Chloride
- b. Silver Chloride
1. Potassium Dichromate
2. Silver Chloride
3. Potassium ferrate
4. Ferric Chloride