Is there any enterence exam for B tech after polytechnic?

Yes, there are entrance exams for B.Tech programs after completing a polytechnic diploma. Many universities and engineering colleges conduct specific entrance exams like the LEET (Lateral Entry Entrance Test) in India, which allows diploma holders to directly enter the second year of B.Tech courses. Additionally, some institutions may accept candidates based on their performance in state-level entrance exams or their own assessments. It's essential to check the specific requirements of the colleges you are interested in.