Heritage Institute of Technology

Domicile certificate was necessary for WBJEE. But, you can visit the college's website and ask them directly.

I think you will not get Heritage and IEM with this rank. Techno you will get some of the branches. Try for other colleges I am attaching the link where you can check all the details:
https://wbjeeb.nic.in/wbjeebcouns/orcr/PrevYearORCR.aspx.

No, you won't get CSE in Heritage. Try for other branches.

HITK is one of the autonomous private colleges in West Bengal. For admission in top branches like CSE, IT and ECE, you need to have a rank within the 7000 to 8000 range. For branches like mechanical and civil, you need to have a rank within 12000. Furthermore, sometimes it depends on the seat availability of college and counselling process. You can wait patiently and go through the counselling process.

HIT-K is an autonomous private college in West Bengal. It takes admission through WBJEE. For the top branches like CSE, IT and ECE rank needed is within 7000 to 8000 in WBJEE. For mechanical branch ranks needed is within 10000. There would be better chances of your admission in the mechanical branch at HIT-K if you have rank is within the specified range. Moreover sometimes it may go down to 12000 depending upon seat availability of college and counselling process. All the best and wait for counselling to start.

You can get into Haldia or Techno India College.

Yes for Techno India it is possible but not for Heritage. Techno closing rank is 18833 after 3rd round. Check it here for further details:-
https://wbjeeb.nic.in/wbjeebcouns/orcr/PrevYearORCR.aspx.

You can apply according to you preferences and hope for the best.

Yes, you will definitely get the branch.
Kindly open this link:
https://wbjeeb.nic.in/wbjeebcouns/orcr/PrevYearORCR.aspx

Yes, you will definitely get the branch.
https://wbjeeb.nic.in/wbjeebcouns/orcr/PrevYearORCR.aspx