NCERT Exemplar Solutions Class 7 Science Solutions for Acids, Bases and Salts - Exercise in Chapter 5 - Acids, Bases and Salts

Question 31 Acids, Bases and Salts - Exercise

A farmer was unhappy because of his low crop yield. He discussed the problem with an agricultural scientist and realised that the soil of his field was either too acidic or too basic. What remedy would you suggest the farmer to neutralise the soil?


If the soil is too acidic, it is treated with bases such as quick lime (calcium oxide) or slaked lime (calcium hydroxide).If the soil is too basic, organic matter is added to it. Organic matter releases acids which neutralises the basic nature of the soil

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