Hi Sachismita

Being from NITR i want to tell you chemical is considered as a good branch in the college and placement of chemical is also good. The average package is around 5.5 to 6 lakhs and I'm core it goes up to as high as 14 lakhs. Take a note that if you want to go for core companies there then you have to work hard there and join various club activities there and it goes without saying that your cg shd be around 8.5 for above average packages. 

I hope my answer helped you.