You can check the details below

1- JEE Main In order to get admission in NITs/IIITs and GFTIs you should have 75% marks in your board exam or you should be in top 20 percentile.

For SC/ST you should have 65% marks.

2- BITSAT You should have secured at least 75% aggregate marks in the qualifying examination with Physics, Chemistry and Mathematics/Biology. 

Apart from the 75% aggregate marks, you should have scored 60% marks separately in each of the three subjects.

3- VITEEE

You should have secured 60% marks in Physics, Chemistry, Mathematics/Biology taken together in 10+2 or equivalent exam. SC/ ST categories and North-East should have secured an aggregate of 50% marks in Physics, Chemistry, Mathematics/ Biology.

4- WBJEE

General category candidates should have secured an aggregate of 45% and reserved category candidates should have scored 40% in the above three subjects taken together to be eligible for WBJEE . All candidates are required to have qualified English in 10+2 with atleast 30% marks.

Good Luck!!