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Question
A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical materials which he can mix with the soil to adjust its pH.
Very Short Answer
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Solution
If the soil pH is 4.2, it is highly acidic. Hence, the soil should be treated with chemicals (bases) such as quick lime (calcium oxide) or slaked lime (calcium hydroxide).
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Chapter 2: Acids, Bases and Salts - Exercise 2 [Page 102]
