Engineering Entrance Exam

No, JEE Mains exam is not mandatory for Admission. Univesity has two criterias one is via JEE Mains and other is the GEEE (Galgotias Engineering Entrance Exam) which is conducted by Galgotias University itself every year.

If you are SC category student, then you are need to score in JEE Mains above 150 then you are eligible for getting admission in some top nits like Warangal, Jaipur, Jalandhar (Means top Nits) with CSE branch. And for iits you are need to score more than 50% for top IITS with CSE Branch. If you have

Yes, it is taking place and already application form are available.

No, for IISC, you have to go via GATE score.

JEE is a bit tougher than NATA, but you can crack both in an easy manner of preparation.

Yes BITSAT may be a good option but for VLSI design IIT Madras is considered the best university.

Following exams are:-
JEE (Mains+Advanced)
AEEE
Wbjee
MH-CET
COMEDK
CUSAT
Pesat
Srm JEE
Vit JEE
Bitspilani
UPTU
Kiitee
IMU exam
BML mujal
IPU Delhi
Chandigarh University
LPU
Manipal University
ICRA etc. So many exam are there. I know these exams.

Hello dear, Try for the central university they are also good government colleges.

Hello dear,
It totally depends on:
Number of applications received for JEE Mains 2018
Difficulty level of the exam
Performance of the candidates
Previous yearsu2019 cutoff trends of JEE Main
But The cutoff of JEE Main 2017 is the lowest in the last five years it is 27, for qualifying JEE Mains score 60+

Study NCRET book.