17) Which of the following minerals is more responsible for a large decrease in soil volume on drying, especially in clayey soils?
a)None of the mentioned
- b) Montmorillonite
- c) Ilite and Kaolinite
- d) All of the mentioned
Komal Bhandakkar Answered question
Answer: b) Montmorillonite
- When Montmorillonite minerals are present in clay soil, the soil exhibits a large initial volume decrease on drying.
- Montmorillonite is one of the main composition of clay minerals in sediment plus suspended particulate matter.
- 1.7 to 2 is the value of the specific gravity of montmorillonite.
Komal Bhandakkar Edited answer