If you are a good student and obtained good marks in 12th with physics , chemistry and mathematics subject . than you can apply for education loan or various scholarship offered by government and private organizations in India.

B tech scholarships:
NTPC Scholarship for SC/ ST/ PC Engineering Students
Cargill Global Scholarships Program for Undergraduate Students 2013
IIT Kharagpur Merit cum Means Scholarship 2013-2014
North South Foundation Scholarships 2014
NSF India Scholarships 2013-14
NATIONWIDE EDUCATION AND SCHOLARSHIP TEST (N.E.S.T.)
Promotion of Science Education (POSE) Scholarship Scheme
ONGC Engineering Scholarships
Sophia Merit Scholarships India for BE/ BTech/ MBBS students

If you have obtained good rank in entrance exam and try to get admission in Government college.
In government colleges fees is very small in amount & some colleges offers scholarship.

B tech government colleges list :
IIT Kharagpur
IIT Kanpur
IIT Mumbai
IIT Delhi
IIT Chennai
IIT Guwahati
IIT Roorkee
IT BHU Varanasi
College of Engineering, Anna University Chennai
Indian School of Mines Dhanbad
Jadavpur University, Faculty of Engg & Tech Calcutta
Delhi College of Engineering DCE New Delhi
NIT Trichy
NIT Warangal
NIT Surathkal
Punjab Engineering College PEC Chandigarh
Bengal Engg and Science University, Shibpur Howrah
Mumbai University Inst of Chem Mumbai
Netaji Subhas Institute of Technology New Delhi
IIIT Allahabad

NIT Kozhikode
Motilal Nehru National Inst. of Technology MNNIT Allahabad
Malviya National Institute of Technology Jaipur
NIT Kurukshetra
VNIT Nagpur
HBTI Harcourt Butler Technological Institute Kanpur
MANIT Bhopal
SVNIT Surat
College of Engg, Andhra University, Waltair Vishakhapatnam
College of Engineering Pune
NIT Rourkela
College of Engineering Thiruvananthapuram
NIT Durgapur
Madras Institute of Technology, Anna University Chennai
Alagappa institute of Information Technology Karaikudi
Govt College of Technology Coimbatore
Model Engineering College, Thrikkakara Kochi
Dr BR Ambedkar NIT Jalandhar
JNTU Hyderabad
University Institute of Engineering & Technology Chandigarh
Shri GS Institute of Technology & Science Indore
NIT Hamirpur
NIT Jamshedpur
Osmania University College of Engineering Hyderabad
Institute of Engineering & Technology Lucknow
Laxminarayan Institute of Technology Nagpur
YMCA Institute of Engineering Faridabad
JNTU Kakinada
SV University Engineering College Tirupati
University College of Engineering, Burla Sambalpur