Dear Mohit,

You can check the top colleges below in UP for CSE and Mechanical branch

Indian Institute of Technology Kanpur

Motilal Nehru National Institute of Technology Allahabad

Indian Institute of Technology Banaras Hindu University Varanasi

Harcourt Butler Technical University, Kanpur

Shiv Nadar University, Dadri

Jaypee Institute of Information Technology, Noida

To check the complete list you can refer below link

https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-India?f%5B0%5D=sm_college_state%3AUttar%20Pradesh&f%5B1%5D=sm_course_offered%3AComputer%20Science%20Engineering&f%5B2%5D=sm_course_offered%3AMechanical%20Engineering

Good Luck!!