SS2 Accounting – Accounting Concepts and Conventions

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

SS2 Biology – Ecological Management and Tolerance

CONTENT Biological Association Tolerance Tolerance Range Geographic Range   Biological Association  In a community, there exist different kinds of biological associations between organisms of different species. Some of these biological