Hello!Pinaki

You have qualified JEE MAINS ,so you are elligible for JEE ADVANCE 2019.With this score under OBC quota chance of getting NITs or IIITs is very less.You need at least 95 percentile under OBC quota to fetch NITs.To know which Colleges you may get visit below mention link:

https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwiHgcC_5_XhAhVBGo8KHe7vB-UYABAAGgJzYg&ae=1&ohost=www.google.com&cid=CAESEeD28DPX4aFaY4z1m7ym8Xd9&sig=AOD64_0msDb1_rxjqt9ySQzIOJQeFDQXDg&q&adurl=https://engineering.careers360.com/jee-main-college-predictor?utm_source%3Dgoogle-search%26utm_medium%3Dpaid%26utm_campaign%3Djeemain-clgpd&ved=2ahUKEwi5kbq_5_XhAhXf8HMBHRD6BBsQ0Qx6BAgQEAE.

GOOD LUCK!