KSEAB II PUC Chemistry study guide
KSEAB II PUC Chemistry · Work through your exam, one topic at a time.
The Karnataka School Examination and Assessment Board (KSEAB) II Pre-University Course (PUC) Chemistry examination is the state-level board assessment taken at the end of the second year of pre-university study in Karnataka. It is intended for students who have completed the prescribed two-year PU chemistry curriculum and need a board-certified result for university admission, professional-course eligibility, or employment. The KSEAB II PUC Chemistry study guide has 15 sections and about 4,262 words.
01Some Basic Concepts of Chemistry
This domain tests how confidently you convert a laboratory observation into a number: moles, mass, volume, concentration, and stoichiometric ratio. KSEAB questions often combine significant figures with limiting-reagent reasoning and solution concentration.
293 words, about 1 min02Structure of Atom
This domain tests the quantum-mechanical description of atoms: quantum numbers, orbital energies, electronic configurations, and evidence for quantisation from spectra, the photoelectric effect, de Broglie waves, and the Heisenberg principle. For principal quantum number n, l=0 to n−1; m l=−l to +l; m s=±1/2.
273 words, about 1 min03Chemical Bonding and Molecular Structure
This domain tests how Lewis structures, VSEPR, valence-bond hybridization, and molecular orbital theory predict shape, polarity, bond order, and magnetic behaviour. VSEPR counts sigma bonds plus lone pairs on the central atom.
316 words, about 2 min04States of Matter and Thermodynamics
This domain tests gas-law calculations and the energy bookkeeping of physical and chemical change: first law, enthalpy, Hess's law, entropy, and Gibbs energy. Ideal gas: PV=nRT; use kelvin.
284 words, about 1 min05Equilibrium and Redox Reactions
This domain tests dynamic equilibrium, acid–base calculations, solubility, and the electron-balance method for redox equations. At equilibrium, forward and reverse rates are equal and concentrations are constant, not equal.
284 words, about 1 min06Solutions
This domain tests concentration, vapour pressure, ideal and non-ideal solutions, and colligative properties, with emphasis on the van't Hoff factor. Concentration units: molarity (mol/L solution), molality (mol/kg solvent), mole fraction, mass %, ppm.
260 words, about 1 min07Electrochemistry and Chemical Kinetics
This domain tests cell potentials, the Nernst equation, conductance, and the rate laws that describe how fast reactions proceed. Cell notation: anode on left, cathode on right; oxidation at anode, reduction at cathode.
258 words, about 1 min08p-Block, d-Block and f-Block Elements
This domain tests periodic trends and the characteristic chemistry of groups 15–18, transition metals, lanthanoids, and actinoids. p-Block: down a group, atomic radius increases, ionisation enthalpy decreases, and metallic character increases.
301 words, about 2 min09Coordination Compounds
This domain tests nomenclature, isomerism, bonding models, magnetic behaviour, and the stability and applications of complexes. Coordination number is the number of donor atoms bonded to the central metal, not the number of ligands (ethylenediamine is bidentate).
268 words, about 1 min10Haloalkanes and Haloarenes
This domain tests the reactivity of carbon–halogen bonds: substitution, elimination, Grignard formation, and the special stability of aryl halides. Haloalkanes: the C–X bond is polar; reactivity toward nucleophilic substitution follows C–I C–Br C–Cl C–F for leaving-group ability.
273 words, about 1 min11Alcohols, Phenols and Ethers
This domain tests structure–reactivity relationships: acidity, dehydration, oxidation, and the Williamson synthesis. Alcohols are classified 1°, 2°, 3°.
292 words, about 1 min12Aldehydes, Ketones, Carboxylic Acids and Amines
This domain tests carbonyl addition, oxidation tests, acid strength, and amine basicity, including diazonium chemistry. Aldehydes are oxidised by Tollens' reagent (silver mirror), Fehling's solution (red Cu2O for aliphatic aldehydes), and Benedict's solution; ketones are not.
279 words, about 1 min13Biomolecules
This domain tests the structure and function of carbohydrates, proteins, enzymes, vitamins, nucleic acids, and hormones, with emphasis on classifying tests and linkages. Monosaccharides are reducing sugars; sucrose is non-reducing because its glycosidic bond involves both anomeric carbons.
304 words, about 2 min14Polymers and Chemistry in Everyday Life
This domain tests polymer classification, important commercial polymers, and the chemistry of drugs, antibiotics, antiseptics, soaps, and detergents. Addition polymers form without loss of small molecules: polythene from ethene, PVC from vinyl chloride, polystyrene from styrene.
274 words, about 1 min15Practical Chemistry and Laboratory Skills
This domain tests qualitative salt analysis, volumetric calculations, purification, and safe, accurate bench technique. Cation analysis uses group reagents: group I HCl (Pb2+, Ag+, Hg2+), group II H2S in acidic medium, group III NH4OH/NH4Cl, group IV H2S in basic medium, group V (NH4)2CO3.
303 words, about 2 min