I ritik raj, from Jharkhand, I want to take admission in CSE B Tech, I passed Diploma in CSE from govt politechnic college, Ranchi 2019.
As you mentioned that you want to take cse BTech after your diploma course in CSE .. so yes you are eligible to take admission in CSE BTech after your diploma course. as you didn't mention hair the name of Institute or university where you want to get admission ... so check the eligibility for the CSE BTech in that college.
All the best!!