Solved UPSC CDS/OTA Question
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Q · Metals and Non-MetalsMedium · 45s
Which is the correct order of reactivity in the reactivity series?
TopicMetals and Non-Metals
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.
Option A is the correct standard reactivity series.
Final Answer: Option A - K > Na > Mg > Al > Zn > Fe > Pb > Cu > Ag > Au