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UPSC CSE Prelims
1995
Q125 — Science & Technology

UPSC CSE Prelims 1995 Q125 — Science & Technology PYQ with Answer

1995Q125·Science & Technology·Biology

Which of the following elements are present in all proteins?

I. Carbon

II. Hydrogen

III. Oxygen

IV. Nitrogen

Select the correct answer from the codes given below:

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