Environment Studies (Science) (M.Phil./Ph.D.) 2018 Panjab University Entrance Exam With Answers

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29.

A small amount of UV B radiation is essential for

1. Synthesis of Vitamin D
2. Acts as a germicide
3. Can cause cancer
4. Inhibit metabolism
Which of the statements given above is/are correct?

A: 1 only

B: 1 & 2 only

C: 3 only

D: 3 & 4 only

The answer is: B

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