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11th Assam Board
IMPORTANT
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What do you mean by Biochemical Oxygen Demand (BOD)?

Important Questions on Environmental Chemistry

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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.14
Do you observe any soil pollution in your neighbourhood? What efforts will you make for controlling the soil pollution?
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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.15
What are pesticides and herbicides? Explain giving examples.
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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.16
What do you mean by green chemistry? How will it help decrease environmental pollution?
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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.17
What would have happened if the greenhouse gases were totally missing in the earth’s atmosphere? Discuss.
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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.18
A large number of fish are suddenly found floating dead on a lake. There is no evidence of toxic dumping but you find an abundance of phytoplankton. Suggest a reason for the fish kill.
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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.19
How can domestic waste be used as manure?
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11th Assam Board
IMPORTANT
Chemistry Part II Textbook for Class XI>Chapter 7 - Environmental Chemistry>EXERCISES>Q 14.2
For your agricultural field or garden, you have developed a compost producing pit. Discuss the process in the light of bad odour, flies and recycling of wastes for good produce.