Which of the compounds is composed of Al, Si, O and H?
-
A.
Epson salt -
B.
Limestone -
C.
Clay -
D.
Urea
Correct Answer: Option C
Explanation
Between the five main minerals found in clay, kaolinite is the most common. Kaolinite holds the chemical composition Al(_{2}) Si(_{2})O(_{5})(OH)(_{4}) and is an aluminum silicate material with a low “shrink-swell” capacity. It is a soft, white mineral but is often colored orange or red by iron oxide found in the soil.
There is an explanation video available below.