JEE

Now a days it's not about marks it's about percentile if you get above 98 percentile you will get admission. It's almost above 230 - 250 marks.

Sorry but to appear in JEE Mains, you need to have pcm or pcb or pcmb.

Government colleges affiliated with Central government don't directly give admission without JEE Main. Some state governments conduct their own entrance exam for admissions and some also give admissions on college level counselling on the basis of 12th marks. Madhya Pradesh government colleges for example. So this is the only way if you want to opt for a good college then Apply with JEE Main.

Class 12 marks have no weightage in the preparation of JEE Main ranks. Students should know that the ranks will be determined based on their score in the entrance exam. However, for admission into IITs, NITs, CFTIs the score that candidates have secured in their class 12 board exam will be taken into account. How to Calculate NTA Score to Rank? P is the NTA score;
N is the total number of students who have appeared for the exam;
P is also the percentage of students below or equal to your marks; (100 - P) is the percentage of students above your marks; ( [100 - P]/100) * (N+1) is the number of students above your marks. Thanks.

Hello Pawan, NTA publishes details of eligibility along with announcement of conduct of exam. Because of covid, lots of relaxation was given last year. I suggest that you wait for couple of weeks till this announcement by NTA. Best wishes to you.

If your preparation is good and of high level then no problem if you skip it.

Kindly check the syllabus for JEE Mains 2022 exam here
https://www.shiksha.com/b-tech/articles/jee-mains-syllabus-2022-blogId-60715
This will surely help you.

Hello, I would suggest you to go through this link and fill out the required details
College predictor in Shiksha to predict if you can get admission in any IIST. https://www.shiksha.com/college-predictor.