Hi Saswati,

It's good that that you want to study BTech in Chemical Engineering after BSc. in Chemistry. But, you must know this basic thing before taking any final decision. First of all you must know that Chemical Engineering is less of Chemistry and more of Mathematics and Physics. So according to me Btech in Chemical Engineering after BSc Chemistry is not a good choice. Still you can go for it if you are determined to do so and confident in it. Below, I will list some colleges ans also a link where you can find a list of government colleges and their process of admission:-

National Institute of Technology, Tiruchirappalli is the one the best rated for BTech. in Chemical Engineering. Admission is done through JEE Main,GATE and DASA.

Link:-https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-India?f%5B0%5D=im_field_ownership%3A966&f%5B1%5D=sm_course_offered%3AChemical%20Engineering

the above link will give you a list of other colleges, that offers chemical engineering and their process of admission. you can also compare the colleges.