Hello Swapan Kuiri,
If you are having a West Bengal domicile then only your cast certificate is going to be fruitful for you in Jadavpur University else you shall be considered as a GEN student.
Assuming you have the domicile of OBC-B you have to get around 70-80 marks out of 200 to feel safe about getting JU in round I itself.
All the best.
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