In Institutes like IITs, NITs, and event in many colleges they have, Departments of Biological Science and Bioengineering(BSBE), Which offers BTech in BSBE and Biotechnology, and the admission criterion remains same. If you want to do Engineering in BSBE from any IIT then you need to qualify JEE Advance nothing

Hello,
Eligibility criteria vary for every course. Kindly mention you are seeking admission in which course so I can help you.
Good luck!

Eligibility to appear in NEET (UG) - 2019 

 Eligibility for appearing in NEET (UG) is as stipulated in Indian Medical Council Act-1956 and the Dentists Act-1948 as amended in 2018.   Eligibility as per related Regulations is as follows:- 

i. He/she has completed age of 17 years at the time of

Eligibility to appear in NEET (UG) - 2019 

 Eligibility for appearing in NEET (UG) is as stipulated in Indian Medical Council Act-1956 and the Dentists Act-1948 as amended in 2018.   Eligibility as per related Regulations is as follows:- 

i. He/she has completed age of 17 years at the time of

It can't be downloaded from any website for free, You can purchase it from any book store or online. If you are preparing for NEET Entrance Exam then firstly I would suggest you to complete NCERT books as it will help you to clear your basics then you can prefer

Yes private candidates too are eligible for NEET UG exam as per latest announcements in 2018 . 

Students must have PCB subjects in 12th from recognised University.

https://medicine.careers360.com/articles/neet-2018-what-nios-students-and-private-candidates-should-know

Hello,
According to the NEET 2019 eligibility criteria, candidate must have passed in Physics, Chemistry, Biology/ Bio technology and English individually in the qualifying examination.
For Unreserved category, PCB aggregate marks in the qualifying exam must be 50%.
You can go through the link below to check the detailed eligibility