1. Concept mapping

2. What do you mean by biochemical oxygen demand?
cataract, skin cancer, sunburns.
death of phytoplanktons
Amount of oxygen need to break organic matter
What do you mean by biochemical oxygen demand?
What are effects of
ozone layer depletion?
What is eutrophication?
Environme-ntal chemistry
Name the agent used to bleach paper ?
Enrich water bodies,loss of biodiversity,
H2O2 With suitable catalyst.
What is the use of carbon dioxide?
What are pesticides and herbicides?
In dry cleaning
Killing of pests and weeds.

3. What is photochemical smog? What is acid rain?
Rain containing HNO3 AND H2CO3.
Smog containing NO, acrolein and PAN
What is photochemical smog?
What is acid rain?
Environment-al chemistry
Peroxy acetyl nitrate
blend of smoke and fog.
What is smog?
What is PAN?
What is ozone layer depletion?
Which is a greenhouse gas produced when
fossil fuels burn?
continuous breakdown of ozone present in the
Stratosphere.
Methane, carbon dioxide.

4. Define environmental chemistry.
CO forms carboxyha- emoglobin but CO2 is non toxic.
Study of chemical and biochemical processes occurring in
nature.
Carbon monoxide gas is more dangerous than carbon dioxide gas. Why?
Define environmental chemistry.
Environ- mental chemistry
List gases which are responsible for greenhouse effect.
What do you mean by tropospheric pollution?
1) CO2
2) CH4
3) H2O
4) NO
5) O3
6) CFCs
Pollution in the lowest
layer of the atmosphere.