There will not be any negative marking for this.
In this year's JEE Advanced, however, was the new Partial Marking Pattern in both the Paper I and II.
What is the partial marking pattern?
This pattern enables a student to gain full or partial marks dedicated to a particular question. For example, if a given question has three correct answers - A, B, and C - then a student will get +4 marks if he chooses all the three. A student will get +2 if he/she chooses any two among the correct choices and +1 for opting for any right option. This pattern may be beneficial to the students. However, if a student chooses a wrong option alone or along with the partially correct one, then he/she will be awarded -2 marks for the questions based on this pattern.