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Plant roots are not growing well in highly acidic soil. Which substance will be useful in a suitable amount?

Answer and explanation

Correct answer: Slaked lime

The governing concept is neutralisation and correction of soil pH. Highly acidic soil has an excess of acidic substances and a low pH. Slaked lime, Ca(OH)₂, is a base; when applied in a carefully measured amount, it reacts with acidic components and raises the soil pH toward a more suitable range. Therefore option C is correct. Lemon juice, vinegar, and dilute acid are acidic and would generally intensify the problem rather than correct it.

Related tags

Soil PhSlaked LimeNeutralisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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