Sriparno 51 marks in the general category are not good enough to get any government colleges or even good private colleges. Your son can definitely get admission in the private engineering colleges in your homes state but still, those colleges might not be so good in terms of parameters like curriculum, faculty, infrastructure, placement etc. To check out the list of the colleges where your son has a good chance of getting admission you can go through the link mentioned below:

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

After seeing the list of colleges if you want to check out which college might be better in that list then you can share the name of colleges with me, I will help you in ranking those colleges.

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