disease and its treatment
movement of charge
need of unit for measurement
harmful microorganisms
droughts, floods and water conservation
similarity and right angled triangle
pollution, sources, effects and preventive measures
conservation of water and its importance and methods
enthalpy changes and enthalpy profile diagrams
brief introduction to atoms of elements
peasants and adivasi revolts
accrued income
methods of redemption of debentures
activity (or turnover) ratios
reproductive system in frog
waste and its types
debentures redemption
chloroplast and pigments of photosynthesis
magnetic field
how can we conserve water?
apollonius's theorem
introduction of atom
elements and atoms
introduction to sound
ancient world history
drugs and its types
methanol
commercially important alcohols - methanol
understanding ratios
medieval america and decline of feudalism