Which one of the following types of glass can cut off ultraviolet rays? (1) Soda glass (2) Pyrex glass (3) Jena glass (4) Crookes glass

Which one of the following types of glass can cut off ultraviolet rays? (1) Soda glass (2) Pyrex glass (3) Jena glass (4) Crookes glass
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(4) Crookes glass Explanation: In this glass mainly cerium oxide (CiO2) is present which sharply absorbs the ultraviolet rays from the sunlight so utilized in making lenses of eye glasses.
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