Hello dear

There are some colleges which provide integrated course , some of NITs  IIT s also provide this and their eligibility is same as for regular course I. E. 75% aggregates in 12th or in top 20percentile of your boards for general category  .

And other college which have their own entrance exam or which conduct their own counseling process have their own eligibility criteria so look for the colleges for which you want to know.

Good luck