Vaishnavi you can check out the links below for last year and sample papers of IPU:

• https://university.careers360.com/articles/ip-university-sample-papers
• http://www.questionpaperz.in/ggsipu-cet-sample-question-papers/
• https://exams.collegedunia.com/ipu-cet/practice-papers
• https://ipu.org.in/ipu-cet-sample-paper-and-practice-paper.html
• http://recruitmentresult.com/ip-university-previous-year-papers/
• http://www.youthcorner.in/ipu-cet-syllabus-previous-papers/
• https://www.entrancecorner.com/engineering/ipu-cet-2017-sample-papers/

Feel free to ask if you have any more queries. All the best!!