Yeah! You are eligible for the MBBS. I think you have the Physics, Chemistry, Mathematics & Biology combination which is usually the case for most of the WBCHSE students. If you have atleast 50% marks in your 10+2 boards, then you are eligible for the course of MBBS and you have nothing to worry about, just focus on your preparation.

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https://medicine.careers360.com/articles/neet-2022

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I hope this answer helps. All the very best for your future endeavors!