Hi, you can simply google the model papers for a particular entrance exam/university entrance exam and you will get many results at your end. The universities who conduct their own exam, might/might noy have previous year's papers so you can check the official website of the colleges in which you want to take admission.

If the exam you are preparing for is a common exam whose scores are used for admissions in various universities and there will be even more results for the same on the internet. These days you can easily find study material online.

Good Luck