Question

A farmer has found that the ph of soil in his fields is 4.2. name any two chemical material which he can mix the soil to adjust its ph.

Answer 1

The different chemical materials that can be used in soil to adjust the pH are chalk, slaked lime, or quick lime.

The chemical name of chalk is calcium carbonate (CaCO3), slaked lime is calcium hydroxide (Ca(OH)2), and calcium oxide (CaO).

All these three are calcium salts.

Answer 2

THE 2 SUBSTANCE THAT A FARMER SHOULD ADD TO ADJUST ITS pH ARE : ―
CALCIUM OXIDE = CaO
CLACIUM CARBONATE = CaCO3


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