Manoj with 85 marks in JEE Mains exam you must have got an All India Rank to be around 1,00,000. For getting admission in the top government colleges like NITs, IIITs you can sit for JoSAA counselling which is going to start in the third week of June 2018. Although with this marks and rank it will be almost impossible for you to get admission in any of the NITs or IIITs. For getting admission in other private colleges which gives admission on the basis of JEE Main exam marks you will need to apply separately for each college by following their application schedule.

You can also find out the list of private engineering colleges where your son has a high probability of getting admission by going through the following link:

• https://engineering.careers360.com/jee-main-college-predictor

Feel free to ask if you have any more queries. All the best!!