As you want to get info of both IIT Guwahati and IIT BHU for your sister future , so I am telling same for you for make your decision easy :

Indian Institute of Technology (IIT), Guwahati established in 1994

Courses offered
Bachelor of Technology in Electrical and Eletronics Engineering
Doctor of Philosophy in Biotechnology
Bachelor of Technology in Civil Engineering
Bachelor of Technology in Chemical Engineering
Bachelor of Technology in Computer Science Engineering

Facilities
Central Library
Computer Centre
Laboratories
Accommodation
Health Care
Sports and Recreation

Departments
Faculty of Biotechnology
Faculty of Chemical Engineering
Faculty of Chemistry
Faculty of Civil Engineering
Faculty of Computer Science & Engg.
Faculty of Design
Faculty of Electronics & Electrical Engg.
Faculty of Humanities & Social Sc.
Faculty of Mathematics
Faculty of Mechanical Engineering
Faculty of Physics
Central Instruments Facility
Centre for Edu. Technology
Centre for Energy
Centre for Environment
Centre for Mass Media Comm.
Centre for Nanotechnology
Computer and Communication Centre

Address
Indian Institute of Technology,Guwahati (IIT G)
Amingaon
Guwahati
Assam
Country : India
Contact No : 0361 - 2583000
Contact Email : registrar@iitg.ernet.in


Indian Institute of Technology - Banaras Hindu University (IIT-BHU), Varanasi established in 1971:

Courses offered:
Bachelor of Technology in Ceramic Engineering
Bachelor of Technology in Chemical Engineering
Bachelor of Technology in Civil Engineering
Bachelor of Technology in Computer Engineering
Bachelor of Technology in Electrical Engineering,

Facilities
IT Gymkhana
Library
Class rooms
Laboratories
Sports Facilities
Canteen
Hostel
Workshop

Departments
Department of Ceramics
Department of Chemical Engineering
Department of Civil Engineering
Department of Computer Engineering
Department of Electrical engineering
Department of Electronics And Communication
Department of Mechanical Engineering
Department of Metallurgical
Department of Mining Engineering
Department of Pharmaceutical Engineering
Department of Applied Chemistry
Department of Applied Physics
Department of Applied Mathematics
School of Bio-Chemical
School of Bio-Medical
School of Material Science and Technology

Address
Indian Institute of Technology - Banaras Hindu University, Varanasi
Varanasi
Uttar Pradesh
India
Contact Name : Prof S.N. Upadhyay
Contact No : 0542-2368427
Contact Email : wmg@itbhu.ac.in