Chemistry of Pesticides and Fertilizers in the Environment
Chemistry ⇒ Environmental Chemistry
Chemistry of Pesticides and Fertilizers in the Environment starts at 11 and continues till grade 12.
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See sample questions for grade 11
Describe one method for minimizing fertilizer runoff from agricultural fields.
Describe one way in which fertilizers can affect human health.
Describe one way in which the use of pesticides can affect non-target organisms.
Describe the difference between persistent and non-persistent pesticides.
Describe the environmental impact of using DDT as a pesticide.
Explain how the use of nitrogen fertilizers can lead to the formation of 'dead zones' in aquatic environments.
A farmer applies a pesticide to a field. After a heavy rain, the pesticide is detected in a nearby river. What is the most likely process responsible for this movement?
(1) Volatilization
(2) Runoff
(3) Photodegradation
(4) Adsorption
A water sample from a lake near agricultural land shows high levels of nitrate. What is the most likely source?
(1) Industrial waste
(2) Fertilizer runoff
(3) Urban sewage
(4) Acid rain
A farmer applies a pesticide to a field. After a heavy rain, the pesticide is detected in a nearby river. What is the most likely process responsible for this movement?
(1) Volatilization
(2) Runoff
(3) Photodegradation
(4) Adsorption
A water sample from a lake near agricultural land shows high levels of nitrate. What is the most likely source?
(1) Industrial waste
(2) Fertilizer runoff
(3) Urban sewage
(4) Acid rain
Which element is commonly found in phosphate fertilizers?
(1) Nitrogen
(2) Phosphorus
(3) Potassium
(4) Calcium
Which of the following is a characteristic of organochlorine pesticides?
(1) Rapid degradation
(2) High water solubility
(3) Persistence in the environment
(4) Low toxicity to wildlife
Fill in the blank: The accumulation of toxic substances in the tissues of living organisms is called __________.
Fill in the blank: The chemical formula for ammonium nitrate, a common fertilizer, is __________.
Fill in the blank: The main environmental concern with phosphate fertilizers is the risk of __________ in water bodies.
Fill in the blank: The main nutrient in potash fertilizers is __________.
True or False: Bioaccumulation refers to the increase in concentration of a substance in an organism over time.
True or False: Nitrogen-based fertilizers can contribute to water pollution through a process called eutrophication.
True or False: Pesticide degradation in soil can be influenced by temperature and moisture.
True or False: The Haber-Bosch process is used to synthesize ammonia for nitrogen fertilizers.
