Course Content
Section Name Topic Name 3 Classification of Elements and Periodicity in Properties 3.1 Why do we Need to Classify Elements ? 3.2 Genesis of Periodic Classification 3.3 Modern Periodic Law and the present form of the Periodic Table 3.4 Nomenclature of Elements with Atomic Numbers > 100 3.5 Electronic Configurations of Elements and the Periodic Table 3.6 Electronic Configurations and Types of Elements: s-, p-, d-, f – Blocks 3.7 Periodic Trends in Properties of Elements
Section Name Topic Name 7 Equilibrium 7.1 Equilibrium in Physical Processes 7.2 Equilibrium in Chemical Processes – Dynamic Equilibrium 7.3 Law of Chemical Equilibrium and Equilibrium Constant 7.4 Homogeneous Equilibria 7.5 Heterogeneous Equilibria 7.6 Applications of Equilibrium Constants 7.7 Relationship between Equilibrium Constant K, Reaction Quotient Q and Gibbs Energy G 7.8 Factors Affecting Equilibria 7.9 Ionic Equilibrium in Solution 7.10 Acids, Bases and Salts 7.11 Ionization of Acids and Bases 7.12 Buffer Solutions 7.13 Solubility Equilibria of Sparingly Soluble Salts
Section Name Topic Name 10 The s-Block Elements 10.1 Group 1 Elements: Alkali Metals 10.2 General Characteristics of the Compounds of the Alkali Metals 10.3 Anomalous Properties of Lithium 10.4 Some Important Compounds of Sodium 10.5 Biological Importance of Sodium and Potassium 10.6 Group 2 Elements : Alkaline Earth Metals 10.7 General Characteristics of Compounds of the Alkaline Earth Metals 10.8 Anomalous Behaviour of Beryllium 10.9 Some Important Compounds of Calcium 10.10 Biological Importance of Magnesium and Calcium
Section Name Topic Name 12 Organic Chemistry – Some Basic Principles and Techniques 12.1 General Introduction 12.2 Tetravalence of Carbon: Shapes of Organic Compounds 12.3 Structural Representations of Organic Compounds 12.4 Classification of Organic Compounds 12.5 Nomenclature of Organic Compounds 12.6 Isomerism 12.7 Fundamental Concepts in Organic Reaction Mechanism 12.8 Methods of Purification of Organic Compounds 12.9 Qualitative Analysis of Organic Compounds 12.10 Quantitative Analysis
Class 11th Chemistry Online Class: Elevate Your CBSE Board Success
About Lesson

Types of pollutants

The classification of pollutant on the basis of their origin

  • Primary pollutant
  • Secondary pollutant

Primary pollutant:

  • These are those which after their formation enter the environment and remain as such.Example: nitrogen and oxygen gas become a pollutant if in excess amount and lead to harmful effect like cause of acid rain etc.

Secondary pollutant:

  • These are harmful materials that are formed by chemical reactions between primary pollutants in atmosphere or hydrosphere

Example: hydrocarbons and oxides of nitrogen react in presence of sunlight to form compounds like PAN .so PAN is secondary pollutant as it is formed by reaction between primary pollutants.

Another classification of pollutants: on the basis of their degradation

  • Biodegradable
  • Non-biodegradable

Biodegradable: are materials that are decomposed by microorganisms either by themselves or by microorganisms.

Environmental Chemistry Class 11th Notes & Solution
Environmental Chemistry

Example: domestic sewage, cow dung etc.


Theseare materials that are not decomposed by either by itself or by microorganisms and their presence in environment leads to pollution. They may be a raw material for producing other toxic substances.

Example: plastics etc.

Environmental Chemistry Class 11th Notes & Solution
Environmental Chemistry
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