1. In general, clay minerals have well defined crystalline structure True False

Question

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

True

False

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

True

False

3. 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

4. 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) True

In general, clay minerals are layered crystalline structures .

2) True

Clay structure is made up of two basic structural units .They are

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