As there are many colleges available which provide B.Tech in Chemical Engineering, few names you can check below -

Indian Institute of Technology Bombay. (Delhi, Kanpur, Kharagpur, Madras, Roorkee)

Birla Institute of Technology and Science (BITS-Pilani)

Indian Institute of Technology - Banaras Hindu University (IIT-BHU)

National Institute of Technology, Tiruchirappalli (Surathkal, Rourkela)

Jadavpur University (Faculty of Engineering & Technology)

Motilal Nehru National Institute of Technology

Malaviya National Institute of Technology

Visvesvaraya National Institute of Technology

Thapar University

Manipal Institute of Technology, Karnataka

R.V.College of Engineering

Sri Sivasubramaniya Nadar College of Engineering - Tamil Nadu

Sardar Vallabhbhai National Institute of Technology

Maulana Azad National Institute of Technology

Nirma University - Institute of Technology

BIT Sindri

Coimbatore Institute of Technology (CIT)

BMS College of Engineering

Jawaharlal Nehru Technological University, Kakinada

Amrita School of Engineering

Note : Kindly share which particular state or college you are interested in so that I can help you with further admission process.

Hope this helps!!!