Hello Uma 

I think you are asking about CLAt but the below answer applies for every law exam

You cannot get original CLAT question papers because they don't release original paper.

But you can refer the list of books you can refer because they offer questions at par the original question paper level :

Arihant clat book

Universal LLB book

A P bhardwaj book

You can also refer the link :

Https://law.careers360.com/articles/best-books-for-clat-2019

Try to solve good mocks to get idea of actual question paper.

Hope I helped you.All the best for future endeavour!!