Cement setting under water employs a/an _______________ process ?
Correct answer: D. Hydration
- A. Reduction
- B. Decomposition
- C. Oxidation
- D. Hydration
Explanation
Cement hardens under water because its silicate and aluminate compounds react with water to form hydrated compounds and calcium hydroxide. This is a hydration process, not simply oxidation or reduction.
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