Unit-I: Chemical Substances-Nature and Behaviour
Chemical equation, Balanced chemical equation, implications of a balanced chemical equation, types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction.
Acids, Bases and Salts
Their definitions in terms of furnishing of H+ and OH– ions, General properties, examples and uses, concept of pH scale (Definition relating to logarithm not required), importance of pH in everyday life; preparation and uses of Sodium Hydroxide, Bleaching powder, Baking soda, Washing soda and Plaster of Paris.
Metals and Non-Metals
Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention.
Unit II: World of Living
‘Living Being’. Basic concept of nutrition, respiration, transport and excretion in
plants and animals.
Control and Coordination in Animals and Plants:
Tropic movements in plants; Introduction of
plant hormones; Control and coordination in animals: Nervous system; Voluntary, involuntary and reflex action; Chemical co-ordination: animal hormones.
Unit IV: Effects of Current
Electric current, potential difference and electric current. Ohm’s law; Resistance, Resistivity,
Factors on which the resistance of a conductor depends. Series combination of resistors, parallel
combination of resistors and its applications in daily life. Heating effect of electric current and its
applications in daily life. Electric power, Interrelation between P, V, I and R.
Magnetic Effects of Current
Magnetic field, field lines, field due to a current carrying conductor, field due to current carrying coil or solenoid; Force on current carrying conductor, Fleming’s Left Hand Rule. Electromagnetic induction. Induced potential difference, Induced current. Fleming’s Right Hand Rule, Direct current.
frequency of AC. Advantage of AC over DC. Domestic electric circuits.
Unit V: Natural Resources
Sources of energy: Different forms of energy, conventional and non-conventional sources of energy: Fossil fuels, solar energy; bio gas; wind, water and Tidal energy; Nuclear energy.
Renewable versus non-renewable sources of Energy.