Environmental Chemistry (4 Marks)
1. Define 'receptor' and 'sink'.
2. Define 'BOD' and 'COD'.
3. Define 'pollutant' and 'contaminant'.
4. Define 'TLV' and 'Eutrophication'.
5. Which oxides cause acid rain? What is its pH value?
6. What are the effects of acid rains?
7. What is Ozone hole? Where was it first observed?
8. What is 'Green house effect'? and how is it caused?
9. Give the possible BOD
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