Water-soluble soils contain petroleum by-products derived from crude oil including tar, road oil, engine oil, gasoline, diesel fuel, grease, and engine oil additives.

Question

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Water-soluble soils are typically organic or inorganic substances that can be dissolved in water, such as sugars, salts, and some acids. Petroleum by-products derived from crude oil, including tar, road oil, engine oil, gasoline, diesel fuel, grease, and engine oil additives, are not water-soluble; they are considered water-insoluble or hydrophobic substances.

Water-Soluble Soils Contain Petroleum By-Products Derived from Crude Oil Including