Soil pollution is caused by:_________?
Correct answer: C. Acid rain
- A. Aerosol
- B. Ozone
- C. Acid rain
- D. PAN
Explanation
Acid rain contains sulfuric and nitric acids that lower soil pH and can damage soil organisms and nutrients, making it a cause of soil pollution. Aerosols, ozone and PAN are more commonly discussed as air pollutants in this set of choices. Students may choose PAN because it is a pollutant, but PAN mainly causes photochemical smog and plant damage rather than being the intended soil pollutant.
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About Exothermic and Endothermic Reactions
Exothermic reactions release heat to the surroundings and have negative enthalpy change, while endothermic reactions absorb heat and have positive enthalpy change. The topic uses energy profiles to identify reactants, products and activation energy, and includes bond energy, enthalpy diagrams, calorimetry and Hess's law for calculating overall heat changes.
Practise Thermochemistry and Energetics of Chemical Reactions
728 free Thermochemistry and Energetics of Chemical Reactions MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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