Hii Meghana,

It depends on the exam pattern . If the given question has partial marking then you will get partial marking in the above case . If there is no partial marking then you will loose marks, in some cases even there is a chance of negative marking also. It all depends on the pattern of the examination . so , refer the model of the question clearly while answering.

you can refer the below link for mock tests so that, you can get more awareness on examination -

https://engineering.careers360.com/articles/jee-advanced-mock-test

Hope you find the answer.

All the best !