while writing the IIT JEE what is the advisable way to do the bubling. is it better after every question is answered or at the end of the entire paper.

Dear student, This is a nice question, You should fix 30 min for this work after paper. then mark all the bubbles. then If you will complete this work within 15 or 20 min then one by one solve question and mark immediately mark the bubble. Please feel free to post as many doubts on our discussion forum as you can.So by this you will save a lot of time. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE & AIEEE preparation. All the best. Regards, Askiitians Experts Pramod Kumar IITR Alumni