Question

Farmers neutralise the effect of acidity of the soil by adding (a)gypsum (b) slaked lime (c) caustic soda (d) baking soda​

Answer 1

Answer:

Slaked lime (Calcium hydroxide)

Explanation:

Calcium oxide, calcium hydroxide and calcium carbonate all three are alkaline or basic in nature and these are used by farmers in their fields if they find the soil to be acidic in nature having more of chloride or sulphate ions to neutralize the effect of these ions and to increase the fertility of the soil.

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Answer 2

(b) slaked lime is added to neutralize the acidity of soil.

1. Slaked lime is the name for calcium hydroxide. It has chemical formula Ca(OH)2.
2. Being a base, slaked lime provides hydroxyl ions which can neutralize the acidity of soil.
3. Acidic soil poses harm to plant as nutrients are deprived to them due to improper growth of root.
4. Presence of excess sulphate or chloride ions makes the soil acidic.