Multiple choice

The least porous soil among the following is a

  1. loam soil

  2. clay soil

  3. peaty soil

  4. chalky soil

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

Clay soil has the smallest particle size among soil types (less than 0.002mm), resulting in very tiny pore spaces between particles. This compact structure makes it the least porous and poorly aerated. Loam is moderately porous, peaty soil has high porosity due to organic matter, and chalky soil has moderate porosity. Clay's low porosity also explains its poor drainage and high water-holding capacity.

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