Hello Priya,
To become a OT technician, you can do diploma in Operation Theater Technology.
Diploma in Operation Theatre Technology is a 2-year graduate degree program; the minimum eligibility is 12th class from a recognized school board or its equivalent exam.
Some of top colleges are -
SIPT, Chandigarh
Institute of Paramedical Technology, Delhi
SVU, Vadodra
Anand Institute of Medical Science, Ludhiana
Following are a few entrance tests that are conducted by some of the Diploma in Operation Theatre Technology colleges in India:
NIMS School of Paramedical Sciences and Technology Entrance Exams
Tech Mahindra SMART Academy for Healthcare Entrance Exams
Chitkara School of Health Sciences Entrance Exam
University of Technology Entrance Exams
Best of luck.