[Civil Engineering Version] Daily Question 20180208
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Among the following statements about marble, identify which one is not completely correct ( ). A. Marble is an alkaline type of stone; it is susceptible to erosion by acids, which can affect its usability. Therefore, with very few exceptions, polished marble is not suitable for use in outdoor applications.B. Marble is a metamorphic rock and is considered a neutral-type stone.
C. The chemical composition of marble consists of CaCO3 and MgCO3, which classifies it as an alkaline stone.
D. Marble has a cryptocrystalline structure and is considered a stone of moderate hardness.
Correct answer: B
B. Marble is a metamorphic rock and is a neutral-type stone
D. Marble has a cryptocrystalline structure and is a stone of moderate hardness
B. Marble is a metamorphic rock and is a neutral-type stone
B. Marble is a metamorphic rock and is a neutral-type stone
C. The chemical composition of marble is CaCO3 and MgCO3; it is an alkaline stone
A. Marble slabs are an alkaline type of stone that is susceptible to erosion by acids, which can affect its usability. Therefore, with very few exceptions, polished marble slabs are generally not suitable for use in outdoor applications
B. Marble is a metamorphic rock and is a neutral-type stone