fresh milk has a pH of 6 when it changes into curd will its PH value will increase decrease
(b)why the soil in a field is highly acidic name two materials which can be added to this..give reason for the choice
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hi there!!
(b)why the soil in a field is highly acidic name two materials which can be added to this..give reason for the choice
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hi there!!
Answers & Comments
Answer:
(a) The pH value of milk changes when it is converted into curd. The pH value decreases when milk is converted into curd. This is because the process of curdling involves the conversion of lactose (a sugar present in milk) into lactic acid by the action of bacteria. This lactic acid lowers the pH value of the milk, making it more acidic. Therefore, the pH value of curd is lower than that of milk.
(b) Soil in a field can become highly acidic due to various reasons, such as excessive use of chemical fertilizers, acidic rain, and leaching of minerals. To neutralize the acidic soil, two materials that can be added are lime and wood ash. Lime is a common material used to reduce soil acidity because it contains calcium carbonate, which reacts with the acidic soil to form calcium ions and carbon dioxide. Wood ash is also effective in reducing soil acidity because it contains potassium and calcium, which neutralize the acidic soil. These materials are chosen because they are easily available, affordable, and effective in reducing soil acidity.
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