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Subjects
Class 10ScienceChemical Substances – Nature and BehaviourAcids, Bases, and SaltsEasy
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Which of the following substances should a student recommend adding to acidic soil to reduce its acidity?

Answer and explanation

Correct answer: Slaked lime

Slaked lime is calcium hydroxide, Ca(OH)₂, a base that neutralises excess acids in soil. This neutralisation reduces acidity and raises the soil pH toward a more suitable range for plant growth. Hydrochloric acid, vinegar, and lemon juice are acidic substances, so adding them would increase rather than reduce acidity. Therefore the recommended substance is slaked lime, option A.

Related tags

ScienceClass10Acids-Bases-SaltsNeutralisationSoil-PhSlaked-LimeAcidsBasesAnd SaltsAcids Bases And Salts
सुधार सुझाएँ / Earn

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10 more MCQs
  1. 1What type of substance turns blue litmus paper red?
  2. 2What type of substance turns red litmus paper blue?
  3. 3Which of the following substances acts as a natural indicator?
  4. 4What is the general nature of an aqueous soap solution?
  5. 5Which of the following substances turns red litmus paper blue?
  6. 6What is the nature of a solution whose pH is less than 7?
  7. 7At 25°C, a solution with a pH greater than 7 is of which nature?
  8. 8A student dips red litmus paper into a soap solution. What change will occur in the red litmus paper?
  9. 9Which gas is generally produced when dilute acids react with active metals?
  10. 10A student dips red litmus paper into a soap solution. What will be the colour of the litmus paper?
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