What does the term “liming” mean?
(a) Application of magnesium and calcium rich substances to soil
(b) Erosion of calcium carbonate(lime) zones in soil
(c) Excessive growth of lemon trees in acid rain prone regions
(d) None of the mentioned
The question was asked at a job interview.
My question is taken from Acid Rain topic in chapter Particulates, Acid Rain & Aerosols of Environmental Engineering