Hi

Admission in IIT is through JEE advanced examination and to be eligible for JEE advanced you need to to qualify JEE Mains first.

Now,

To be eligible for  you must have studied physics and Mathematics in your 10+2 .

For example,

Eligibility criteria says that to be eligible  for JEE mains 2021 for BE or Btech you just must be either appearing for 12th board exam in 2021 or should have passed it in 2020 or 2019 with Physics,  mathematics and anyone of Chemistry or Biology or Biotechnology or Technical Vocational Subject.

So, being an  Arts students you are not eligible for JEE examination as you have not studied physics Maths etc in your 10 + 2 and thus you cannot get into IIT

Thank you