Multiple choice

Which of the following is a special type of glass containing some cerium oxide used in making lenses?

  1. Flint glass

  2. Pyrex glass

  3. Water glass

  4. Crooke’s glass

  5. Jena glass

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Crooks’ glass is a special type of glass containing cerium oxide. It does not allow the passage of ultraviolet rays and used for making lenses.