Hello Manith,

If you have not appeared for any of the national level or state level engineering examination then please do appear for private universities entrance examination to get admission in B.Tech there. There are colleges which will grant you admission on the basis of your class 12th marks but they will even ask for rank and scores in national level or state level engineering examinations. I am listing some universities in which you should register for examination as early as possible and some of the colleges where you can go directly.

• Universities
  

1. Amity University, Noida
2. Galgotias University, Greater Noida
3. Shiv Nadar University, Dadri
4. Teerthankar Mahavir University, Moradabad
5. Northcap University, Gurgaon
5. Gautam Buddha University, Greater Noida ( Government university)
6. Sharda University, Greater Noida

• Colleges where you can try directly
  

1. ABES Institute of Technology, Ghaziabad
2. Raj Kumar Goel Institute of Technology, Ghaziabad
3. Indraprastha Engineering College, Ghaziabad
4. Greater Noida Institute of Technology, Greater Noida
5. Noida Institute of Engineering and Technology, Greater Noida
6. ITS Engineering College, Greater Noida

Note: Above mentioned colleges may take a short written exam followed by an interview so be prepared for it.

Hello Manith, 

It's completely fine that you haven't appeared for the entrance exams. Fortunately enough, there are colleges and universities in India that do offer admission based on just your 10+2 marks. I am providing you with a link that has all the details on which universities and colleges you can apply to, along with the procedures. https://engineering.careers360.com/articles/btech-admissions-on-basis-of-class-12th