B.A./B.COM. LL.B. (5 YEAR LAW / U.G. LAW) Panjab University Entrance Exam 2019 : MCQs and Answer Key

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21.

Which one of the following types of glass can cut off ultraviolet rays ?

A: Soda glass
B: Pyrex glass
C: Jena glass
D: Crooked glass

The answer is: D

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