Question
What are biodegradable and non-biodegradable pollutants?
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Answer
Biodegradable pollutants:
Those pollutants which can be broken down into simpler, harmless, substances in nature in due course of time (by the action of micro-organisms like certain bacteria) are called biodegradable pollutants. Domestic wastes (garbage), urine, faecal matter, sewage, agriculture residues, paper, wood, cloth, cattle dung, animal bones, leather, wool, vegetable stuff or plants are biodegradable pollutants.
Non-biodegradable pollutants:
Those pollutants which cannot be broken down into simpler, harmless substances in nature are called non-biodegradable pollutants. DDT, plastics, polythene, bags, insecticides, pesticides, mercury, lead, and arsenic, metal articles like aluminum cans, synthetic fibres, glass objects, iron products and silver foils are non-biodegradable pollutants.
Those pollutants which can be broken down into simpler, harmless, substances in nature in due course of time (by the action of micro-organisms like certain bacteria) are called biodegradable pollutants. Domestic wastes (garbage), urine, faecal matter, sewage, agriculture residues, paper, wood, cloth, cattle dung, animal bones, leather, wool, vegetable stuff or plants are biodegradable pollutants.
Non-biodegradable pollutants:
Those pollutants which cannot be broken down into simpler, harmless substances in nature are called non-biodegradable pollutants. DDT, plastics, polythene, bags, insecticides, pesticides, mercury, lead, and arsenic, metal articles like aluminum cans, synthetic fibres, glass objects, iron products and silver foils are non-biodegradable pollutants.
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2. Identify the functional groups present in the following compounds.
→2. Identify the functional groups present in the following compounds.
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→Match the species in Column I with the type of hybrid orbitals in Column II.
→|
Column I
|
|
Column II
|
|
|
i.
|
NO |
a.
|
1.5 |
|
ii.
|
CO |
b.
|
2.0 |
|
iii.
|
$\text{O}^{-}_{2}$ |
c.
|
2.5 |
|
iv.
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$\text{O}_{2}$ |
d.
|
3.0 |
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