P-Block Elements Ques 60
Question: Which of the following cuts ultraviolet rays
[AFMC 2004]
Options:
A) Soda glass
B) Crooke’s glass
C) Pyrax
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
Crook’s glass is a special type of glass containing cerium oxide. It does not allow the passage of ultra violet ray and is used for making lenses.