Multiple choice If the pH of the soil is 9.2, then the soil is acidic neutral alkaline saline sodic Reveal answer Fill a bubble to check yourself C Correct answer Explanation Soil pH of 9.2 indicates strongly alkaline soil. The pH scale ranges from 0-14, with 7 being neutral. Values below 7 are acidic, and values above 7 are alkaline. Most crops prefer slightly acidic to neutral soil (pH 6-7).