Hi Suraj,

To know what are the the options available to you based on your rank you can use the following college predictor tool:

You have got General rank 21000 and SC category rank 1500. With such rank I am sorry to say that you won't be able to get admission in any top Government College including Jadavpur University. For more information you can check the previous year cutoff by visiting the following link:

https://www.google.com/amp/s/engineering.careers360.com/articles/wbjee-cutoff/amp

All the best.