Assam ASSEB HS Chemistry study plan

Compute atoms per unit cell for simple cubic, bcc and fcc lattices and derive the packing efficiencies 52.4%, 68% and 74% from radius–edge-length relations.

Apply the density relation d = ZM/(a³N_A) to solve for edge length, molar mass or Avogadro constant, and convert between pm and cm correctly.

Distinguish Schottky and Frenkel defects and explain metal-excess defect with F-centres and its link to colour and paramagnetism.

Apply Raoult's law to binary solutions, calculate partial and total vapour pressure, and classify positive and negative deviations with one real example each (ethanol–acetone, chloroform–acetone).

Calculate molar mass from relative lowering of vapour pressure, Kb elevation, Kf depression and osmotic pressure, inserting the van't Hoff factor for electrolytes.

Explain group 15–18 trends in atomic and ionic radius, ionisation enthalpy and electronegativity, and justify the anomalies of N, O and F.

Write balanced equations for the laboratory preparation and key properties of NH3, HNO3, PH3 and H2SO4 by the contact process.

Draw structures of H3PO3, H3PO4, H2S2O7 and HClO4, assign oxidation states and predict hybridisation of the central atom.

Use an Ellingham diagram to justify carbon reduction of ZnO above 1180 K and the thermite reduction of Cr2O3 by aluminium.

Describe preparation, bonding and hydrolysis of XeF2, XeF4 and XeF6, including disproportionation of XeF4 and the hybridisation of each.

Classify amines as 1°, 2° or 3° and write preparations by Hofmann bromamide, Gabriel phthalimide and nitrile reduction, then rank their basicity in aqueous and in gas phase.

Write the carbylamine, Hinsberg and nitrous acid tests with observations to distinguish primary, secondary and tertiary amines.

Describe open-chain and cyclic structures of glucose, fructose and sucrose, state the hydrolysis product of sucrose, and classify reducing versus non-reducing sugars.

Outline the four levels of protein structure, denaturation, and the lock-and-key versus induced-fit models of enzyme action.

Distinguish addition from condensation polymers using nylon-6,6, bakelite and Buna-S, and classify one analgesic, one antiseptic and one antibiotic with structure–activity comment.

Apply the Kohlrausch law of independent migration of ions to compute limiting molar conductivity and the degree of dissociation of a weak electrolyte.

Use the Nernst equation for a single electrode and a full cell to compute EMF, then link standard EMF to ΔG° and to the equilibrium constant.

Contrast galvanic and electrolytic cells, list the steps of rusting as an electrochemical process, and name four prevention methods including galvanisation and cathodic protection.

Determine reaction order and rate constant from concentration–time data using the zero-, first- and second-order integrated rate equations and half-lives.

Use the two-point Arrhenius form to calculate activation energy and explain temperature and catalyst effects through collision theory and the Arrhenius probability factor.

Explain transition-metal trends: variable oxidation states, catalytic activity, colour from d–d transitions, and calculate spin-only magnetic moments for given d^n configurations.

Explain lanthanoid contraction and its consequences, and justify the stability of Ce(IV) and Eu(II).

Write preparation routes for KMnO4 from pyrolusite and K2Cr2O7 from chromite, with ionic equations in acidic and alkaline media and observed colour changes.

Name coordination compounds by IUPAC rules and deduce ionisation, hydrate, linkage, geometrical and optical isomers for four- and six-coordinate examples.

Apply valence bond theory and crystal field theory to predict hybridisation, geometry, magnetic behaviour and CFSE for [Fe(CN)6]3−, [Co(NH3)6]3+ and [NiCl4]2−.

Write preparations of haloalkanes and haloarenes from alcohols, alkanes and arenes, and define Finkelstein and Swarts reactions with reagents.

Predict SN1 versus SN2 outcome from substrate class, steric hindrance, solvent polarity and nucleophile strength, and explain Walden inversion and racemisation.

Apply Saytzeff elimination to predict major alkene products and explain why chlorobenzene resists nucleophilic substitution while benzyne intermediates form under harsh conditions.

Write the preparation of a Grignard reagent and its reactions with aldehydes, ketones, esters and CO2, showing the hydrolysis step in each.

Describe named reactions and tests for alcohols, phenols and ethers: Lucas test, Victor Meyer test, FeCl3 test for phenols, Reimer–Tiemann, Kolbe and Williamson ether synthesis.

Write the nucleophilic addition mechanism for aldehydes and ketones with HCN, NaHSO3, a Grignard reagent and an alcohol, and name the product in each case.

Separate aldol, Cannizzaro and haloform reactions by conditions and substrate type, and write Clemmensen and Wolff–Kishner reductions as contrasts.

Rank carboxylic acid acidity using inductive and resonance substituent effects and outline the acid-catalysed ester hydrolysis mechanism.

Compare physisorption and chemisorption, use the Freundlich isotherm (log x/m against log p) to find constants, and classify homogeneous, heterogeneous and enzyme catalysis with one example each.

Distinguish lyophilic from lyophobic sols, describe Bredig's arc and peptisation methods, and explain Tyndall effect, Brownian motion, Hardy–Schulze coagulation and the two emulsion types.

Write full procedures, indicator choice, end-point description and calculation for the KMnO4–oxalic acid and Na2CO3–HCl titrations.

Identify cations and anions from group reagents and confirmatory tests, covering Cu2+, Fe3+, Al3+, Zn2+, CO3²−, SO4²− and Cl−.

Describe organic preparations such as acetanilide from aniline, including apparatus, recrystallisation and purity check by melting point.

Re-solve every missed question from the week 1–7 error logs and re-state the corrected rule in one line each.

Sit one full-length 3-hour mock covering all 12 domains and compute section-wise accuracy.