Hi shubhangi,
UPSC's and SPSC's conduct written exam for the posts of drug inspector every year you will have to appear and qualify for it alongwith personal interview to become a drug inspector.
The written exam consists of 2 parts
1) pharmacy 100MCQs - 200 marks - 2 hr duration.
2) General Knowledge 50 MCQs - 50 marks - 1 hr duration.
Hope this helps.
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