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Consider the statements P and Q.
P: Soil particles formed by mechanical weathering, and close to their origin are generally subrounded.
Q: A activity of the clay physically signifies its swell potential.
Which one of the following options is CORRECT?
- Both P and Q are TRUE
- P is TRUE and Q is FALSE
- Both P and Q are FALSE
- P is FALSE and Q is TRUE
Correct answer: P is FALSE and Q is TRUE
Solution
Statement P is incorrect because soil particles formed by mechanical weathering are typically angular rather than subrounded, as they have not undergone significant transport. Statement Q is correct as the physical activity of clay, such as its ability to swell, is a key indicator of its swell potential.
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