Soil Pollution
Chemistry ⇒ Environmental Chemistry
Soil Pollution starts at 10 and continues till grade 12.
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See sample questions for grade 11
A farmer notices that his crops are stunted and the soil has a foul smell. Laboratory analysis shows high levels of ammonia and heavy metals. What could be the possible sources of soil pollution in this case?
Describe one chemical method used to remediate polluted soil.
Describe the impact of soil pollution on human health.
Explain how soil pollution can affect the food chain.
Explain how the excessive use of chemical fertilizers leads to soil pollution.
Explain the difference between point source and non-point source soil pollution.
Explain the term 'bioremediation' in the context of soil pollution.
List two preventive measures to control soil pollution.
List two sources of radioactive contamination in soil.
Name two common pesticides that contribute to soil pollution.
State one way in which soil pollution affects aquatic ecosystems.
A chemical spill in a field has led to the contamination of soil with benzene. Suggest a suitable remediation technique and justify your choice based on the chemical properties of benzene.
A soil sample from an industrial area contains 0.5 mg/kg of cadmium. The permissible limit for cadmium in agricultural soil is 0.2 mg/kg. By what factor does the cadmium concentration exceed the permissible limit?
Describe how soil pollution can contribute to the development of antibiotic-resistant bacteria.
Explain the mechanism by which persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) remain in the soil for decades and discuss their potential impact on soil microorganisms.
Explain the role of chelating agents in the remediation of heavy metal-contaminated soils, and discuss one potential environmental risk associated with their use.
