To pursue a B.Tech. (Bachelor of Technology) degree at N.S.N. College of Engineering and Technology Karur, aspiring candidates must meet certain eligibility criteria. Firstly, candidates must have completed their higher secondary education (10+2) or its equivalent with a minimum aggregate of 50% in Physics, Chemistry, and Mathematics. Additionally, they should have a valid score in entrance examinations such as Tamil Nadu Engineering Admissions (TNEA) or any other relevant state or national level entrance exams. Meeting the age criteria set by the college is also essential. Candidates are required to submit their application forms along with the necessary documents and fulfill any other specific requirements mentioned by the college.