As you want I am telling according to me both IIT bomaby and IIT Kanpur good colleges to do B.tech , as here I am telling about both institution you can take decision on your level :

Indian Institute of Technology, (IIT-B), Bombay was established in 1958 as a second-oldest institute of the Indian Institutes of Technology system with assistance:

Departments
Department of Aerospace Engineering
Department of Bio sciences and Bio engineering
Department of Chemical Engineering
Department of Chemistry
Department of Civil Engineering
Department of Computer Science & Engineering
Department of Earth Sciences
Department of Electrical Engineering
Department of Energy Science and Engineering
Department of Humanities & Social Science
Department of Industrial Design Center
Department of Mathematics
Department of Mechanical Engineering
Department of Metallurgical Engineering & Materials Science
Department of Physics

Facilities
Classrooms
Hostels
Library
Auditorium
Gymkhana
Computer Centre
Hospital
Scholarships
Guest House
Swimming Pool
Victor Menezes Convention Center
Lecture Hall Complex
Hostels
Counseling Care Center
Travel Desk

Address
Indian Institute of Technology, Bombay
Powai
Mumbai
Maharashtra
Country : India
Contact No : 022-25722545
Contact Email : dean.aa@iitb.ac.in

The Indian Institute of Technology (IIT), Kanpur established in 1959, is one of the premier institutions established by the Government of India.


Departments /center
Department of Engineering
Department of Humanities
Department of Management
Department of Sciences
Department of Inter Disciplinary
Advanced Centre for Material Science (ACMS)
Advanced Centre for Electronic Systems (ACES)
Centre for Environmental Science & Engineering
Centre for Mechatronics
Centre for Laser Technology
Computer Aided Design Laboratory
Nanoscience
Prabhu Goel Research Centre for Computer and Internet Security
Samtel Centre for Display Technologies
SIDBI Innovation and Incubation Centre

Facilities
Library
Computer Centre
Laboratories
Auditorium
Hostels
Transport

Address
Indian Institute of Technology (IIT), Kanpur
Kalyanpur
City : Kanpur
State : Uttar Pradesh
Country : India
Contact No : 0512-259 0151
Contact Email : infocell@iitk.ac.in