Solved UPSC CDS/OTA Question
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Q · Metals and Non-MetalsMedium · 45s
Which of the following non-metals is essential for life?
TopicMetals and Non-Metals
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
← Previous questionQ 34 / 34
Step-by-Step Solution
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Nitrogen is essential for proteins.
Sulphur is part of some amino acids.
Phosphorus is a key part of DNA and ATP.
All are essential for life.
Final Answer: Option D - All of the above