1. Soil colloids play an important role in the adsorption of A. Cations B. Anion

Question

1. Soil colloids play an important role in the adsorption of

A. Cations

B. Anions

C. Water molecule

D. a and d

E. a,b, and c

2. Soil colloids have small external surface area per unit mass, but some silicate clays possess extensive internal surface ars between the layers of their platelike crystal units.

True

False

3. In general, clay minerals have well defined crystalline structure

True

False

4. In terms of the molecular arrangement, clay structure is made up of either Silicon Tetrahedral Sheets or Aluminum-Magnesium Octahedral Sheets

True

False

5. Which of these processes is responsible for much of the variability in the nature of silicate clays?

a. Physical Weathering

b. differences in rock types

c. Isomorphous substitution

d. Location of the soil

e. Type of soil

6. The enormous surface area and charged sites on clay and humus in soils attract and bind many types of organic molecules including such biologically active substances except

a. acids

b. enzymes

c. antibiotics

d. toxins

e. Hormones

Explanation / Answer

1) E. a,b, and c

Soil colloids play an important role in the adsorption of Cations , Anions and Water molecules.

2) False.

  Because of the  small size of the Soil colloids , they   have large external surface area per unit mass

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.