i am diploma mechanical holder and i want to get admission in nchmct jee ihm and i also apper my exam this year but i dont have 12 th so did i get admission in this

Hello,

Unfortunately you cannot get admission because you cannot appear in NCHMCT JEE exam.
The eligibility criteria for appearing in the entrance exam is that a candidate must have passed 10+2 of the Senior Secondary Exam (SSE) or any other equivalent exam. State board candidates are also eligible. One must have passed English as a subject of study (core/elective/functional) in the qualifying examination. Since, you are a diploma graduate and haven't passed +2 exam, you are ineligible.
https://www.google.com/amp/s/hospitality.careers360.com/articles/nchmct-jee-eligibility-criteria

I hope this helps.