Read and download NCERT Class 11 Chemistry Environmental Chemistry in NCERT book for Class 11 Chemistry. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Chemistry textbook for Class 11 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 11 Chemistry to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 11 Chemistry Chapter 14 Environmental Chemistry
Class 11 Chemistry students should refer to the following NCERT Book Chapter 14 Environmental Chemistry in Class 11. This NCERT Book for Class 11 Chemistry will be very useful for exams and help you to score good marks
Chapter 14 Environmental Chemistry NCERT Book Class 11
ENVIRONMENTAL CHEMISTRY
You have already studied about environment in your earlier classes. Environmental studies deal with the sum of all social, economical, biological, physical and chemical interrelations with our surroundings. In this unit the focus will be on environmental chemistry. Environmental chemistry deals with the study of the origin, transport, reactions, effects and fates of chemical species in the environment. Let us discuss some important aspects of environmental chemistry.
14.1 ENVIRONMENTAL POLLUTION
Environmental pollution is the effect of undesirable changes in our surroundings that have harmful effects on plants, animals and human beings. A substance, which causes pollution, is known as pollutant. Pollutants can be solid, liquid or gaseous substances present in greater concentration than in natural abundance and are produced due to human activities or due to natural happenings.
Do you know, an average human being requires nearly 12-15 times more air than the food. So, even small amounts of pollutants in the air become significant compared to similar levels present in the food. Pollutants can be degradable, like discarded vegetables which rapidly break down by natural processes. On the other hand, pollutants which are slowly degradable, remain in the environment in an unchanged form for many decades. For example, substances such as dichlorodiphenyltrichloroethane (DDT), plastic materials, heavy metals, many chemicals, nuclear wastes etc., once released into the environment are difficult to remove. These pollutants cannot be degraded by natural processes and are harmful to living organisms. In the process of environmental pollution, pollutants originate from a source and get transported by air or water or are dumped into the soil by human beings.
14.2 ATMOSPHERIC POLLUTION
The atmosphere that surrounds the earth is not of the same thickness at all heights. There are concentric layers of air or regions and each layer has different density. The lowest region of atmosphere in which the human beings along with other organisms live is called troposphere. It extends up to the height of ~ 10 km from sea level. Above the troposphere, between 10 and 50 km above sea level lies stratosphere. Troposphere is a turbulent, dusty zone containing air, much water vapour and clouds. This is the region of strong air movement and cloud formation. The stratosphere, on the other hand, contains dinitrogen, dioxygen, ozone and little water vapour.
Atmospheric pollution is generally studied as tropospheric and stratospheric pollution. The presence of ozone in the stratosphere prevents about 99.5 per cent of the sun’s harmful ultraviolet (UV) radiations from reaching the earth’s surface and thereby protecting humans and other animals from its effect.
14.2.1 Tropospheric Pollution
Tropospheric pollution occurs due to the presence of undesirable solid or gaseous particles in the air. The following are the major gaseous and particulate pollutants present in the troposphere:
1. Gaseous air pollutants: These are oxides of sulphur, nitrogen and carbon, hydrogen sulphide, hydrocarbons, ozone and other oxidants.
2. Particulate pollutants: These are dust, mist, fumes, smoke, smog etc.
1. Gaseous air pollutants
(a) Oxides of Sulphur:
Oxides of sulphur are produced when sulphur containing fossil fuel is burnt. The most common species, pollutants cannot be degraded by natural processes and are harmful to living organisms. In the process of environmental pollution, pollutants originate from a source and get transported by air or water or are dumped into the soil by human beings.
Please refer to attached file for NCERT Class 11 Chemistry Environmental Chemistry
NCERT Class 11 Chemistry Some Basic Concepts Of Chemistry |
NCERT Class 11 Chemistry Structure of Atom |
NCERT Class 11 Chemistry Classification of Elements and Periodicity In Properties |
NCERT Class 11 Chemistry Chemical Bonding and Molecular Structure |
NCERT Class 11 Chemistry State Of Matter |
NCERT Class 11 Chemistry Thermodynamics |
NCERT Class 11 Chemistry Equilibrium |
NCERT Class 11 Chemistry Redox Reactions |
NCERT Class 11 Chemistry Hydrogen |
NCERT Class 11 Chemistry The s Block Elements |
NCERT Class 11 Chemistry The p Block Elements |
NCERT Class 11 Chemistry Organic Chemistry Some Basic Priciples and Techniques |
NCERT Class 11 Chemistry Hydrocarbons |
NCERT Class 11 Chemistry Environmental Chemistry |
NCERT Class 11 Chemistry Answer of Some Selected Problems |
NCERT Class 11 Chemistry Answer to Some Selected Problems |
NCERT Book Class 11 Chemistry Chapter 14 Environmental Chemistry
The above NCERT Books for Class 11 Chemistry Chapter 14 Environmental Chemistry have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 14 Environmental Chemistry Chemistry Class 11 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 14 Environmental Chemistry NCERT etextbooks as the exams for Class 11 Chemistry are always asked as per the syllabus defined in these ebooks. These Class 11 Chapter 14 Environmental Chemistry book for Chemistry also includes collection of question. Along with Chemistry Class 11 NCERT Book in Pdf for Chapter 14 Environmental Chemistry we have provided all NCERT Books in English Medium for Class 11 which will be really helpful for students who have opted for english language as a medium. Class 11 students will need their books in English so we have provided them here for all subjects in Class 11.
You can download the NCERT Book for Class 11 Chemistry Chapter 14 Environmental Chemistry for latest session from StudiesToday.com
Yes, you can click on the link above and download chapter wise NCERT Books in PDFs for Class 11 for Chemistry Chapter 14 Environmental Chemistry
Yes, the NCERT Book issued for Class 11 Chemistry Chapter 14 Environmental Chemistry have been made available here for latest academic session
You can easily access the link above and download the Class 11 NCERT Books Chemistry Chapter 14 Environmental Chemistry for each chapter