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CBSE COMPLEMENTARY MATERIAL-ENVIRONMENTAL CHEMISTRY-UNIT TEST
- The lowest region of atmosphere is
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- Name two greenhouse gases..
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- A major class of organic halides that are thought to pose a threat to ...
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- The single plant nutrient mainly responsible for eutrophication is .
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- How is classical smog different from photochemical smog?
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- Define BOD. What is the importance of measuring BOD of a water body?
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- How does rain water get contaminated with acidic impurities? Write one...
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- How can you apply green chemistry for the following ? (a) To control...
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