Hii Aritra..

As you want to study Mechanical engineering you can get one one of the reputed colleges with this gmr. If you are having home state quota of West Bengal then you can go for government colleges.

And if you want to join private reputed colleges then you can expect to get admissions at Heritage Institute of engineering science and technology and IEM saltlake in mechanical engineering department. 

You can easily get admissions at other colleges also like Techno India Salt Lake, kGEC  and Jalpaiguri Government Engineering College in mechanical engineering department.

Hope it helps. 

Best of luck for your future.