Hi Sarika,

The basic eligibility requirement for admissions to any B.Tech program is:

• Candidates must have passed the class 12 exam from a recognized board with Physics, Chemistry and Mathematics as core subjects.
• They must also have secured minimum aggregate marks of 60% in the above subjects combined.
• They also need to give college specific entrance exams based on whose merit marks, admission is given.

These entrance exams are numerous. Some of the most popular exams are:

• JEE Mains (accepted by almost all the colleges including NITs, IIITs, etc)
• JEE Advanced (used for admission in IITs)
• State based exams like WBJEE, COMEDK, etc
• Private college exams like BITSAT, SRMJEEE, VITEEE, etc.

There are many more exams and for a detailed knowledge on the same, visit: https://www.careers360.com/courses/b-tech-bachelor-of-technology

Hope this helps.