Guru Gobind Singh Indraprastha University

No, it is not possible to join B.Tech in biotechnology after completion of your Diploma course in ECE.
Eligibility criteria to get admission for pursuing B.Tech course, you should have passed Diploma in life sciences or biotechnology or 12th standard with PCB stream from a recognised board.

You can buy any book for the entrance purposes, as different universities have different way of conducting their exams. But still, if you wish to buy something buy Arihant publication book for MA preparation.

LEET 2018 Exam Date:
LEET 2018 is scheduled tentatively for June 2018. The table indicates the tentative important dates for LEET 2018.
Availability of LEET Application Form online- April 2008
LEET Application Form submission deadline- May 2018
Regards.

B.Sc. LL.B. is not available in IP University. There are other courses which are mentioned at the link provided below. Please refer to the link provided below for a list of all courses available from University School of Law and Legal Studies - Guru Gobind Singh Indraprastha University, Dwarka, Delhi.
https://www.shiksha.com/college/university-school-of-law-and-legal-studies-guru-gobind-singh-indraprastha-university-dwarka-delhi-23387

The fee is 37.7K per year for BBA in Indraprastha University.

Hello Vijin,
Yes, there is a program named BBA in Aviation which is a 3-year full-time undergraduate course, the eligibility for which is HSC (10+2) qualification from a recognized board in the country with a minimum of 50% marks. The program is spread over 3 years which divided into 6 semesters of 6 months each, with the final semester ending with an internship program.
I hope this will help you.
Thank you.

Guru Gobind Singh Indraprastha University is not a private university. It is a state university, which means it is funded by the state, and is established under the state act, and is eligible to grant degrees to its students.