SS2 Commerce – Trade Association and Chamber of Commerce
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SS1 Biology – Classification of Living Things (Animals)
KINGDOM ANIMALIA (Characteristic feature) KINGDOM ANIMALIA (Characteristic feature) All are multicellular organisms DNA is located in nucleus enclosed with nuclear membrane Cells have no cell walls All possess nervous systems
SS1 Chemistry – Introduction to Hydrocarbons
CONTENTS Sources of hydrocarbon Classification (of aliphatic hydrocarbon) Petroleum and natural gas (i) Refining of Petroleum by fractional distillation (ii) Uses of different fractions PETROLEUM CHEMISTRY HYDROCARBON AND