Hello sir. Actually the jee main rank of mine is 300651. Is there a chance to get admission in btch (csc)in Any government institution

Hello
With this huge rank in JEE main you cannot get a seat in any government colleges for engineering like NITs IIITs and GFTIs. Even if you are from reservation category you cannot get a seat. Simply your rank is too high. So please go for some good private engineering colleges in India like Sharda SRM Amity etc
Here's a list of some of the best private engineering colleges in India
https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/colleges/list-of-private-engineering-colleges-in-kolkata&ved=2ahUKEwix1tWNmNXjAhUCfSsKHVDBDAgQFjAGegQIChAB&usg=AOvVaw0uSKweq28qYyuq4lGyQOuo&cshid=1564234234464
Hope it helps

Dear aspirant,

Consider that you are a general candidate, i highly doubt you can any government college. See For government institutes like GFTI,IIITS one needs a high crl rank. Incase your are and SC or ST candidate then your rank could be around 20k which can get you a decent NIT or IIITs so incase you do have any reservation, please specify also i suggest you change stream and search for colleges but government colleges will be next to impossible to get into.

You have a  very fine rank so you can get NIT Rourkela foodtech engineering in around 3rd round of counselling.  Also your home state plays a major role also your category.

Also as everyone states if you are from Delhi chances of getting in NSIT, DTU, IIITD will be Very high. Other than this getting a preferred branch and a good NIT would be a bit difficult but you will surely end up with a decent college if you take part in spot rounds. Do check last years cutoff ranks as they generally remain constant. By that you can judge and weigh your Options.