Good evening !!

I am hoping that you are absolutely fine and well. As per your mentioned query , jee mains is a national level of exam conducted by the NTA. For writing the jee mains exam you have to opt physics, chemistry and mathematics as a compulsory subjects in your 10+2. As per the eligibility criteria of the exam candidate should be from PCM background. If you pass the jee mains exam with good percentile then you can get the NIT and you will also applicable for jee advanced exam. So by clearing the exam of jee mains you can get the government college.

If you get a government college then you will also have good placement. Because from NIT and IIT students get the very good package. So ultimately clearing jee mains with best percentile fulfill your all goals.

Work hard!!

I hope this will be helpful for you.

Good wishes !!