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3 questions · timed · auto-graded

Question 11 Mark
Why do people object to waste handling in their neighborhoods?
Answer
Due to non availability of municipal place so near.
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Question 21 Mark
Describe the advantages and disadvantage of waste incineration
Answer
advantages (a) It reduces the volume of waste by turning it to ashes. (b) Disposal of ashes is more easy compared to the huge amounts of unburnt waste.
Disadvantages (a) It is a waste of money as large amount of fuel is required to burn (b)the waste. releases harmful chemicals and pollutants, including Air pollutants such as particulate matter.
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Question 31 Mark
What are the objectives of waste disposal?
Answer
To protect our environment from pollution and contamination and repair and reduce the damage caused by pollution. Irresponsibly disposed of waste can lead to various diseases and can harm people.
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[1 Mark Question Answer] - BIOLOGY STD 9 Questions - Vidyadip