Hii Rohan,

Yesdefinitely, you are eligible for taking the admissions , you can very much get admission in class 12th having a year gap after your 11th.

According to the CBSE rules one can get admission after having 1 or 2 year of gap in between his/her academic career, but however, the candidate will have to provide a valid document/documents as a valid reason for dropping school for the mentioned number of years.

If you are through with the documents, then you can surely get admission in class XII.You  just need a valid reason for that dropped yearand you need to scored good marks in class 11 so you won't face any problem 
Documents required to get admission are as follows :-

1. Passport size photos
2. Gap year certificate
And if you are going to change school then you also need 
* school leaving certificate
* metric marksheet
* character certificate.

Hope the information helps you.

Thanking you