Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ — decoded step-by-step.
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Q · Mixtures and CompoundsMedium · 45s
Statement: In a compound, the constituents are present in a fixed ratio by mass. Is the statement correct?
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.
By definition, compounds have fixed proportions by mass — e.g., H₂O is always 2:16.
Final Answer: Option A — Yes