According to your SC rank you may get kalyani government engineering college with CSE stream in the mop up round. You can also get Jadavpur university in the mop up or decentralized round. But you will not get cse or ece in Jadavpur university 

Chances of government based colleges are low but cannot be ruled out as cutoffs close within top 15000 ranks ubder general category.
Incase your category is different from General, you might have some chances.
Your chances for CSE and Mechanical engineering are good with bekow mentioned private colleges:

• Haldia Institute of Technology
• Institute of engineering and management
• Techno India University
• Heritage institute of Technology
• St. Thomas college of engineering and Technology
• Netaji subhash engineering college
• Bengal college of engineering and Technology

These are the specific College that you may get in the spot rounds.