hi,

yes you can definitely apply for multiple exam for law entrance test if you meet the eligibility criteria , ailet is conducts by NLU delhi, candidate who are appearing in 12th exam or already pass can apply for ailet. you may follow the below link to know details,

https://law.careers360.com/exams/ailet

however du llb entrance test for those who have already passed graduation course  and want to pursue 3 years llb course from delhi university.

hope it would help.