Hello dear

Yes both the papers are different and generally if I would say why they are different this is because to cover a wide range of topics only one single paper is not enough. And yes both the papers have different types of questions.

The most important difference between them is that the JEE advanced paper 1 is of single correct type answers and paper 2 has multiple correct answers and both the papers comprises of physics chemistry and maths.

To know more about Joint entrance examination advanced paper you can refer the link:

https://engineering.careers360.com/exams/jee-advanced

I hope it helps you!

Thank you!