Prelims versus Mains

beginner18 min readreviewed 1 Sep 2026

How the preliminary and main stages of a typical SBI/IBPS selection differ in purpose, weight and difficulty, and how that difference should shape what a candidate practises at each stage. This is study guidance, not an official rule; the current notification always governs.

Concept

Two stages, two jobs

A typical SBI or IBPS officer or clerk selection runs in stages. The preliminary examination is a screening test: it is short, mostly on core aptitude, and its job is only to shortlist a manageable number of candidates for the next stage. In most such selections the prelims score is qualifying, meaning it does not carry forward into the final merit list.

The main examination is where selection is actually decided. It is longer, broader, harder, and its marks - often together with an interview or a descriptive paper - form the final merit list. Always confirm from the current notification whether the prelims score carries forward, because this varies by exam and by year.

Comparison

How the paper changes

Broadly, moving from prelims to mains:

  • Sections widen. Prelims usually cover reasoning, quantitative aptitude and English. Mains add general, economy and banking awareness, and computer aptitude, and sometimes merge reasoning with computer aptitude and quant with data analysis.
  • Depth increases. Quant moves from single-step arithmetic to multi-set data interpretation and data sufficiency; reasoning moves to long, linked puzzles; English adds longer passages and subtler usage.
  • A descriptive paper (letter and essay) may appear at mains for some officer posts.
  • Time pressure shifts. Mains give more time per question in absolute terms but far more to read and process.

Treat these as general tendencies; the exact section list, marks and timing are in the notification.

Exam tip

Preparing for prelims

Because prelims reward speed on core topics, useful priorities are:

  • Build raw speed and accuracy in arithmetic, simplification and approximation, basic DI, and the high-frequency reasoning types (seating, puzzles, inequalities, syllogism).
  • Get comfortable clearing an easy set fast, since prelims often has a sectional time limit and each section has its own cut-off.
  • Practise deciding within a few seconds whether to attempt a question or skip it.
  • Take timed sectional drills more often than full mocks at this stage.
Exam tip

Preparing for mains

Mains reward breadth, stamina and careful reading:

  • Start banking and computer awareness early; they take weeks to build and are pure marks once learnt.
  • Shift quant practice to caselet and multi-graph DI, data sufficiency, and word problems that combine two topics.
  • Do full-length mains mocks under real timing to build endurance and to learn set selection - which puzzle or DI set to open first.
  • If a descriptive paper applies, practise letters and essays to a fixed word count and structure, on a timer.
  • Review current affairs for the window the notification covers, if the exam includes it.
Method

Reading the notification

Every cycle's official notification is the only authority on the process. When it is released, note:

  1. Which stages exist, and whether the prelims score carries forward.
  2. The exact sections, number of questions, marks and time for each stage, and whether timing is sectional or overall.
  3. The negative-marking fraction for wrong answers.
  4. Any minimum qualifying marks per section and overall (cut-offs).
  5. The weight of the interview or descriptive paper in the final merit list.
  6. Eligibility, age and attempt limits, and important dates.

Write these down for your target exam and let them shape your practice, rather than relying on last year's pattern.

Common mistake

Common mistakes

  • Treating prelims marks as part of the final score. In most of these exams they are only qualifying - confirm for your cycle.
  • Leaving banking and computer awareness for the last week. They are slow to build and easy to score, so they belong early.
  • Practising only full mocks in the prelims phase. Short sectional drills build the speed prelims actually tests.
  • Assuming this year's pattern equals last year's. The notification can change section names, timing and weights.
  • Ignoring sectional cut-offs. A strong overall score can still fail if one section misses its minimum.
  • Reading strategy advice, including this page, as an official rule. It is guidance; the notification governs, and no method guarantees selection.
Quick revision

Quick revision

  • Prelims: short screening test, core aptitude, usually qualifying (not added to the final score). Mains: longer, broader, harder; its marks plus interview/descriptive decide the merit list.
  • From prelims to mains: more sections (awareness, computer added), more depth (multi-set DI, linked puzzles, longer passages), possibly a descriptive paper.
  • Prelims prep: raw speed and accuracy on core topics, skip decisions, sectional drills.
  • Mains prep: start awareness early, harder DI and data sufficiency, full mocks for stamina and set selection, timed descriptive practice.
  • The current notification is the only authority: stages, sections, marks, timing, negative marking, cut-offs, interview weight, eligibility.
  • All of this is guidance, not an official rule or a guarantee.
Negative-Marking Strategy →