Multiple choice

The pH value of a soil measures its

  1. fertility rate

  2. iron and lime content

  3. water retention

  4. acid content

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil pH measures the acidity or alkalinity of soil on a scale of 0-14, with 7 being neutral. It indicates the concentration of hydrogen ions in the soil solution, which determines acid content. pH affects nutrient availability and microbial activity. Fertility, iron-lime content, and water retention are important soil properties but are not measured by pH.