NSEC study materials
NSEC study resources

NSEC study plan

NSEC · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

Chemistry (syllabus up to Class 12 CBSE India)

  • Build a one-page formula and definition sheet covering mole concept, stoichiometry, equivalent mass, and concentration terms (molarity, molality, normality, mole fraction).

  • Solve 40 mixed numerical problems on mole concept and stoichiometry, including limiting-reagent and percentage-yield cases, and log every error with its cause.

  • Derive and apply the ideal gas equation and partial-pressure relations (Dalton's law) to at least 10 gas-mixture problems.

  • Set up a spaced-repetition deck of 60 atomic-structure and periodicity facts (quantum numbers, orbital filling rules, periodic trends) and review it three times.

Your checkpoint

A dated formula sheet plus a 40-problem solved log with an error-cause tally showing no more than 5 unresolved items.

Week 2

Chemistry (syllabus up to Class 12 CBSE India)

  • Map the periodic table by writing the electron configuration, block, and key trend direction for elements across periods 2-4 without notes.

  • Solve 30 problems on periodic trends (atomic and ionic radius, ionization enthalpy, electron affinity, electronegativity) and justify each answer in one line.

  • Work through 25 chemical-bonding questions covering VSEPR shapes, hybridization, bond order from MO theory, and dipole moment, and sketch each geometry.

  • Complete 20 thermochemistry numericals on enthalpy of reaction, Hess's law, bond enthalpy, and Gibbs free energy, keeping units consistent throughout.

Your checkpoint

A hand-drawn trend map of periods 2-4 plus a 75-question answer set scored at 80% or better.

Week 3

Chemistry (syllabus up to Class 12 CBSE India)

  • Write balanced equations for the standard inorganic reaction families (displacement, double decomposition, redox, disproportionation) and assign oxidation numbers in 30 species.

  • Solve 30 equilibrium problems on Kc, Kp, degree of dissociation, Le Chatelier shifts, and ionic-product (solubility, pH, buffer) calculations.

  • Build a comparison table of s-block and p-block group behaviour (group 1, 2, 13-18) covering oxides, hydrides, halides, and anomalous trends.

  • Answer 25 qualitative inorganic questions on group tests, flame colours, and characteristic precipitates, citing the observation that confirms each ion.

Your checkpoint

A 30-species oxidation-number worksheet plus a scored 25-question qualitative-analysis set with every wrong answer corrected in writing.

Week 4

Chemistry (syllabus up to Class 12 CBSE India)

  • Draw and name all structural isomers for a set of 20 molecular formulas and classify each reaction as substitution, addition, elimination, or rearrangement.

  • Apply stereochemistry rules (R/S, E/Z, optical activity, chirality) to 20 structures and explain each assignment in one sentence.

  • Predict products for 30 named organic reactions spanning alkanes, alkenes, alkynes, haloalkanes, and alcohols, and write the mechanism arrow-pushing for five of them.

  • Rehearse the full syllabus under timed conditions by completing one 60-minute mixed chemistry paper.

Your checkpoint

A timed 60-minute mock scored and reviewed, with a written list of the three weakest sub-topics to carry into week 5.

Week 5

Chemistry (syllabus up to Class 12 CBSE India)

  • Solve 25 coordination-chemistry problems on nomenclature, isomerism, crystal-field splitting, magnetic moment, and EAN, and draw the splitting diagram for each complex.

  • Work through 20 electrochemistry numericals on cell EMF, Nernst equation, conductivity, Kohlrausch's law, and Faraday's laws of electrolysis.

  • Answer 20 questions on d- and f-block elements (oxidation states, colour, lanthanoid contraction, alloy and catalyst uses) with one-line justifications.

  • Complete 25 chemical-kinetics problems on rate laws, order determination, half-life, and Arrhenius plots.

Your checkpoint

A 90-question answer set across coordination chemistry, electrochemistry, and kinetics, scored at 75% or better with corrections written out.

Week 6

Chemistry (syllabus up to Class 12 CBSE India)

  • Solve 25 problems on colligative properties (relative lowering of vapour pressure, elevation, depression, osmotic pressure) and van't Hoff factor.

  • Answer 25 questions on surface chemistry, solid state (unit-cell packing, density, defects), and solutions, stating the governing relation before each calculation.

  • Complete 20 questions on qualitative and quantitative analysis, including gravimetric and volumetric calculation chains.

  • Write a one-page summary linking every physical-chemistry chapter to its core formula and the typical trap in exam questions.

Your checkpoint

A physical-chemistry formula-and-trap summary sheet plus a 70-question answer set scored at 75% or better.

Week 7

Chemistry (syllabus up to Class 12 CBSE India)

  • Solve 25 problems on biomolecules (carbohydrates, proteins, enzymes, vitamins, nucleic acids) and 15 on polymers and everyday-chemistry applications, matching each compound to its class and property.

  • Rework every item in the error log from weeks 1-6 and re-solve each one from scratch without looking at the earlier solution.

  • Complete two timed 45-minute sectional papers (one inorganic-plus-physical, one organic-plus-applied) and record scores and pacing.

  • Memorise and self-test 40 high-frequency facts (named reactions, reagents, colours, exceptions) using active recall only.

Your checkpoint

A cleared error log with a re-test score above 85% and two sectional paper scorecards with timing notes.

Week 8

Chemistry (syllabus up to Class 12 CBSE India)

  • Sit two full-length timed chemistry mocks under exam conditions and review each within 24 hours, tagging every mistake by chapter and cause.

  • Drill the 30 slowest or most-missed question types from the mock reviews until each is solved correctly twice in a row.

  • Consolidate all summary sheets, formula lists, and fact cards into a single two-page final revision sheet.

  • Run a final active-recall pass over the whole syllabus and confirm no chapter is left without at least one review cycle.

Your checkpoint

Two graded full-length mocks with a rising score trend and a completed two-page final revision sheet.

Milestones

Week 2: Score 80% or better on a closed-book 40-question set spanning mole concept, atomic structure, periodicity, bonding, and thermochemistry.

Week 4: Complete a timed 60-minute mixed paper across the full syllabus and identify the three weakest sub-topics in writing.

Week 6: Score 75% or better on a 70-question physical-chemistry set and show a fully cleared error log for weeks 1-6.

Week 8: Achieve a rising score across two full-length timed mocks and produce the final two-page revision sheet with every chapter represented.