Hello Rohan,
Hope you are going great!
To answer your question, you do not come under GEM (General, Engineer, Male) category, as you are a pharma student.
And obviously, you do have a change to get into IIM A/B/C, with good extra-curricular, and co-curricular. IIM's are trying to diversify, and you do stand a chance to get into them.
Best of luck!
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