Solved UPSC CDS/OTA Question
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Q · Excretory SystemMedium · 45s
The main nitrogenous waste in humans is:
TopicExcretory System
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Urea is the main nitrogenous waste formed by protein metabolism.
Final Answer: Option B — Urea