Hello Alok Singh. Thanks for contacting Careers360 and we hope we will be able to answer your query.

Please understand that the JEE Mains authorities provide bonus marks to students only when there is some mistake in the question. In this situation, the marks for that question are awarded to all students who have taken that mode of JEE Mains exam.

Other than this, the only way of getting marks is to carefully solve each question correctly. Hope this helps you and all the best!