Revise chemical equations, balancing, types of chemical reactions, oxidation, reduction, redox reactions, corrosion and rancidity.

Practise important questions on acids, bases, indicators, pH scale, salts, neutralisation reactions and important compounds.

Prepare physical and chemical properties, reactivity series, ionic compounds, extraction, corrosion, alloys and reactions.

Revise covalent bonding, carbon compounds, hydrocarbons, homologous series, functional groups, reactions, ethanol and ethanoic acid.

Prepare nutrition, respiration, transportation and excretion in plants and animals with important diagrams and exam questions.

Revise nervous system, neuron, reflex action, brain, plant hormones, tropisms and endocrine hormones.

Prepare reproduction in plants and humans, asexual reproduction, sexual reproduction, reproductive systems and reproductive health.

Revise heredity, Mendel's experiments, traits, dominant and recessive traits, sex determination and inheritance.

Master ray diagrams, mirror and lens formulae, magnification, image formation, refraction and numerical problems.

Revise the human eye, accommodation, defects of vision, corrective lenses, dispersion, atmospheric refraction and related concepts.

Practise current, potential difference, resistance, Ohm's law, series and parallel combinations, electric power and energy numericals.

Prepare magnetic field, magnetic field lines, Fleming's Left-Hand Rule, solenoid, electromagnet, force on a conductor and domestic electric circuits.

Revise ecosystem, food chains, food webs, trophic levels, energy flow, biological magnification, ozone layer and waste management.