Env chemistry 11 sci
This document discusses environmental pollution and global warming. It defines environmental pollution as the pollution of air, land, and water that has harmful effects. Some key causes of pollution listed include rapid industrialization, manufacturing of chemicals and drugs, excessive fertilizer and pesticide use, and the release of toxic gases from industries. The document also discusses the greenhouse effect, noting that carbon dioxide and other greenhouse gases in the atmosphere trap heat and cause global warming. Major greenhouse gases and their sources are identified as carbon dioxide from fossil fuel combustion, methane from cattle and landfills, chlorofluorocarbons from aerosols and refrigerants, and nitrous oxide from fertilizers and fossil fuel use.
Env chemistry 11 sci
- 1. G 17 ENVIRORNMENTAL CHEMISTRY SHRI.VIDHATE G.B. M.SC.B.Ed ( ORG.CHEMISTRY)
- 2. ENVIRORNMENT MEANS ALL THAT ENVIRORNS ( SURROUNDS ) US. ELEMENTS OF ENVIRORNMENT ENVIRONMENT NON-LIVING LIVING ATMOSPHERE HYDROSPHERE LITHOSPHERE INTRODUCTION
- 3. ENVIRORNMENTAL POLLUTION ENVIRORNMENTAL POLLUTION MEANS POLLUTION OF THREE SEGMENTS AIR(ATMSPHERE),LAND(LITHOSPHER E) & WATER(HYDROSPHERE). POLLUTION :- POLLUTION MEANS UNWANTED CHANGES IN OUR SURROUNDING THAT HAVE ADVERSE (HARMFUL)EFFECTS ON
- 4. 1. RAPID INDUSTRIAL & TECHNOLOGICAL DEVLOPMENT. 2. MANUFACTURING OF DRUGS,ANTIBIOTICS,DYE S,AGROCHEMICALS. 3. EXESSIVE USE OF FERTILIZERS & PESTICIDES FOR AGRICULTURE. 4. DEVLOPMENT OF ATOMIC & NUCLEAR ENERGY WHICH RELEASE TOXIC RADIOACTIVE MATERIALS INTO ENV. 5. RELEASE OF TOXIC GASES,CHEMICALS BY PRODUCT FROM CEMENT,SUGAR,DISTILLE RY,DRUGS,PAPER,THERM RESPONSIBLE INGREDIENTS FOR POLLUTION
- 5. ATMOSPHERE ARE SPRADE FROM EARTH SURFACE TO UPTO 500 KM . APPROX.MASS OF ATMOSPHERE IS 4.5 TO 5 X 10 15. ATMOSPHERIC POLLUTION REGION HEIGHT IN KM TEMP OF REGION MAIN CONSTITUE NTS TROPOSPHERE 0—11 15 TO -56 O2 , N2 , CO2 , H2O STRATOSPHER E 11—50 -56 TO -2 O3 MESOSPHERE 50—90 -2 TO -92 O2+ , NO+ THERMOSPHE RE 90—500 -92 TO -1200 O2+ , O+ , NO+
- 6. Green house effect :- The heating earth up of the earth surface by co2 layer in the atmosphere is called green house effect GLOBAL WARMING & GREEN HOUSE EFFECT
- 8. SOME MAJOR GREEN HOUSE GASES & THEIR SOURCES GAS SOURCES CARBON DIOXIDE (CO2) Fossil fuel combustion (coal,oil,natural gas) Deforestation & land use changes METHANE (CH4) Enteric fermentation in cattle & insects Biomass burning & garbage land fills Leakage of gases from coal mines & natural gas Rice paddies Swamps & tundra CHLORO FLUORO CARBON (CFC) Plastic foams Refrigeration & air-conditioning Aerosols(spray propellants) Industrial solvents NITROUS OXIDE (N2O) Fertilizers use Fossile fuel combustion Biomass burning Changing land use
- 9. EFFECT OF CLIMATE CHANGE
- 10. CAUSES OG GLOBAL WARMING
- 11. THANK YOU FOR TODAY