NSEJS study guide
NSEJS · Work through your exam, one topic at a time.
NSEJS, the National Standard Examination in Junior Science, is a multiple-choice screening examination conducted by the Indian Association of Physics Teachers (IAPT). It is the junior-tier entry point in IAPT's National Standard Examination family, which the association describes as the first step towards the international science olympiads. The exam is aimed at younger secondary students: per IAPT's published eligibility, a candidate must be in class 10, 9 or 8 on 30 November 2026 and born between 1 January 2012 and 31 December 2013, both days inclusive. The announced syllabus is Physics, Chemistry and Biology up to Class 10 CBSE India, so preparation means mastering the standard secondary-school syllabus in all three sciences rather than chasing university-level material. Topics on this exam: Physics, Chemistry, and Biology. The NSEJS study guide has 3 sections and about 999 words.
01Physics
The paper re-dresses the class 9–10 syllabus - motion, force, gravitation, fluids, heat, sound, ray optics and circuits - in unfamiliar settings. Two habits earn marks: draw the free-body diagram before writing any equation, and check the units or a limiting case at the end. Kinematics: v = u + at, s = ut + ½at², v² = u² + 2as apply only to uniform acceleration. Slope of an s–t graph is velocity; slope of a v–t graph is acceleration; area under v–t is displacement.
375 words, about 2 min02Chemistry
Atomic structure and periodicity, bonding, the mole, acids–bases–salts, metals and carbon compounds. The marks sit in calculation and in explaining trends, not in reciting them. Mole: n = m/M = N/N A = V/22.4 L for a gas at STP, with N A = 6.022 × 10²³. Limiting reagent: divide each reactant's moles by its stoichiometric coefficient; the smallest quotient limits the yield.
323 words, about 2 min03Biology
Cell structure, plant physiology, human physiology, genetics, diversity and ecology, with items that reward mechanism over labels - why the nephron reabsorbs, why the Calvin cycle cannot run in the dark. Cells: prokaryotes lack membrane-bound organelles; mitochondria and chloroplasts are double-membraned; ribosomes occur in both cell types. Plant cells add a wall, a large vacuole and plastids. Photosynthesis: the light reaction on thylakoids yields ATP, NADPH and O₂ from water; the Calvin cycle in the stroma fixes CO₂.
301 words, about 2 min