The eligibility criteria for aiim bsc nursing is as -
1) A candidates have to passed class 12 under the 10+2 scheme/Senior School Certificate Examination or Intermediate Science or an equivalent examination from a recognized University/Board of any Indian State
2) He/ she must have English, Physics, Chemistry and Biology as main subjects of study with minimum aggregate mark of 55% in case of Gen/OBC candidates.
The other details and updates you can get from the following link
Hope this helps.