Hi dear, yes you can get admission in IEM, kolkata and Heritage Institute of technology through jee mains..For taking CSE in these colleges you must bring rank under following numbers-

IEM -under 33000

Heritage -under 41000

hope this satisfies your query. 

Good luck. 

Hello Anupam. 

Yes, you can get admission in IEM Kolkata through JEE Mains, according to the previous year cut offs your probable rank shall be around 40,000 or less. 

In Heritage college also, you can get admission through JEE Mains. However the main admissions are through WBJEE

Hi dear, yes you can get admission in IEM, kolkata and Heritage Institute of technology through jee mains..For taking CSE in these colleges you must bring rank under following numbers-

IEM -under 33000

Heritage -under 41000

hope this satisfies your query. 

Good luck.