Section B Is Now Compulsory in JEE Main and NEET: What Actually Changes

For four years, both of India’s biggest entrance exams gave you an escape hatch. JEE Main’s Section B offered ten numerical questions and asked you to answer any five. NEET carried an optional section in each subject where you chose a subset of the questions. If two numericals came from the one chapter you never fixed, you simply walked past them.

That hatch is closed. In JEE Main, Section B is now five numerical questions per subject and all five are compulsory, with a −1 for a wrong answer where an unattempted optional question once cost nothing. NEET has dropped the optional section entirely — all 180 questions are compulsory, worth 720 marks, marked +4 and −1.

Most aspirants know this. Far fewer have changed anything about how they prepare because of it, and that gap is where marks are quietly leaking.

What you actually lost

The optional questions were not a convenience. They were insurance against your own weakest chapter, and they let you carry a blind spot all the way to the exam hall without paying for it. Three things changed the moment they were removed.

• Selective preparation stopped working. Before, a topic you avoided cost you only the marks you skipped. Now an unavoidable question from that topic costs you −1 as well, and the swing between a correct answer and a wrong one is five marks, not four.
• Guessing got more expensive. With optional questions you could leave a coin-flip alone. Compulsory means every unknown is a decision: attempt and risk −1, or leave it blank and take a certain zero.
• Your syllabus floor rose. There is no longer such a thing as a chapter that is safe to be bad at. Coverage is not a nice-to-have; it is the entry fee.

How attempt strategy should change

The honest answer to "should I guess?" depends on what kind of unknown you are facing, and most students never make that distinction.

On a multiple-choice question where you have genuinely eliminated two of four options, attempting is usually right — you are no longer guessing, you are choosing between two. On a numerical question there are no options to eliminate. A number you are not reasonably confident in is close to a pure guess, and a pure guess on a compulsory numerical is a bet that loses far more often than it wins. Blank is a legitimate, strategic answer there.

The practical rule: eliminate first, then decide. If elimination got you nowhere, leaving it is not cowardice — it is arithmetic.

What to do between now and the exam

• Find your avoidable chapters and stop avoiding them. Make a list of the topics you have been quietly skipping in mocks. That list used to be a strategy; it is now a liability, and it is usually shorter than you fear.
• Drill numericals specifically, not just problems. Section B is numerical-entry — no options, no working backwards from the choices, and answers that need the right units and rounding. It is a different skill from MCQ solving and it needs its own practice.
• Re-baseline on the current pattern. Any mock you took on the old pattern flattered you, because the optional questions absorbed your weakest attempts. Your real position is the one you score under compulsory attempts.
• Track your blanks as deliberately as your wrongs. A blank you chose is discipline. A blank you ran out of time for is a pacing problem. They look identical on the scorecard and need opposite fixes.

The uncomfortable summary

The old pattern rewarded students who knew their strengths. The new one rewards students with no exploitable weaknesses. That is a meaningfully different target, and preparation built for the first will underperform against the second.

This is also why knowing your true chapter-level position matters more than it used to. Mantrana breaks every attempt down by concept rather than by chapter, and separates the questions you left from the questions you never reached — so the list of topics you can no longer afford to avoid is one you can actually see.