No, there is no negative marking in upes entrance paper, so you can tick all the questions if you know the answer or you are making a guess it doesn’t matter. The result of this paper gives you only your rank with a tie with approximately 100 or 200 people i.e, 100 or 200 people have the same rank which you have. After that your class 12th pcm percentage plays an important role here because who has the highest pcm percentage among all the tie people have given the chance first to choose their interested stream. So it is a combination of your 12th hard work and exam rank which helps you to take admission in this college.