1) how to know legally if any other builder owns that project. (second and third phase has been now sold by different buidler Capita Land Realty, but they are also not traceable so not sure if they own first phase or not. )
On the basis of the information about the owners, you should send notice to the builder whose address is known to you, by his reply you can gather more information in this regard.
2) If Novel Nest Pvt Ltd. abonded the business , and if no one owns the layout, what option I have to get release order for my plot.
You can approach court seeking direction to the corporation authorities to issue khatha on the basis of available information with you.
3) if plot was not released, why registration department allowed to sell, bank gave the loan? was it legal to sell?
Your question is irrelevant because the registrar is not concerned with the release, he will be concerned with the papers to be proper for registration.
4) Can I filed FIR against old company if any libality as per BMRDA rule to complete the project . (I hope, police should able to trace them )
Police will not entertain civil matter.
5) if Novel Nest Pvt Ltd. does not exist now, and no if no one owns the layout, can I file case with BMRDA or in civil court to look into my case and release my plot to I could get khata?
Yes.
6) Incase second builder Capita Land Realty, owns now the first phase where my plot , how we can make them compelled legally to apply to release the plots in BMRDA.
You can issue a legal notice asking him to fulfill the formalities in this regard because he is the legally right person for applying khata.
7) I am also looking lawyer service at Bangalore who can take up it further legal steps required to solve the issue fully . Please let me know if you can take up this ?
This is a general call, you may fix it up with anyone in particular.