See Rohan you gave choice meta in IIT Kharagpur and chemical in IIT BHU. Both colleges are good. So it completely depends on what do you like and in which field you want to pursue your career. Chemical engineering is flourishing day by day. It is receiving more offers day by day . But IIT Kharagpur is more better than IIT BHU . 

If it was IIT Kharagpur chemical then without any thinking I should have gone with it. But you have to select between the choice. 

Chose wisely.

All the best.