Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · Mixtures and CompoundsMedium · 45s
The ratio of hydrogen and oxygen in water is:
TopicMixtures and Compounds
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
It is always 2:1 atoms; 1:8 by mass.
Final Answer: Option B — Fixed