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A soil has pH 5 and crops are not growing well. Which method is scientifically more suitable?

Answer and explanation

Correct answer: Add a suitable amount of slaked lime

A soil pH of 5 indicates appreciable acidity, which can hinder the availability of nutrients and affect crop growth. Slaked lime, calcium hydroxide, is a base; in a carefully measured amount it neutralises part of the excess acidity and raises the soil pH toward a more suitable range. Hence option A is correct. Vinegar, lemon juice, and dilute acid would add acidity and generally worsen the stated problem.

Related tags

Soil PhSlaked LimeAcidic SoilAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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