Hello,

As you have not mentioned about the name of examination so it is little bit difficult to guide you with an accurate information but however if we consider your profile then you might be interested in engineering exams like JEE-Main. According to the category rank you have mentioned in the question your son can get top NITs like NIT Jamshedpur, NIT Uttarakhand, NIT Jaipur as per previous year's cut-offs which you can check from the link given below :-

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-cutoff-for-top-nits/amp

Note that the cut-offs are bound to change every year depending upon various factors.

So you can use JEE-Main College Predictor to predict your son's chances of admission in different engineering colleges of India :-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

I hope this information helps you.

Good Luck!!