Question

In which type of rock is limestone found?
(A) Igneous rock
(B) Sedimentary rock
(C) Metamorphic rock
(D) Ore

Answer 1

Hint: Limestone consists often of the minerals calcite and aragonite. Most cave systems are found in the limestone bedrock. Limestone is very useful in building, especially in Europe and North the USA.

Complete answer:
Limestone is a sort of sedimentary rock. Approximately 10% of sedimentary rocks are limestones. The solubility of limestone in water and vulnerable acid answers ends in karst landscapes, in which water erodes the limestone over lots to millions of years. Limestone has numerous uses: as a piece of building fabric, a critical thing of concrete or Portland cement, as a combination for the base of roads, as white pigment or filler in products together with toothpaste or paints, as a chemical feedstock for the production of lime, as a soil conditioner, and as a famous ornamental addition to rock gardens. Like maximum other sedimentary rocks, most limestone is composed of grains. Maximum grains in limestone are skeletal fragments. The primary supply of the calcite in limestone is most typically marine organisms. Some of those organisms can construct mounds of rock called reefs, building upon beyond generations. Calcite can be dissolved or prompted by using groundwater, relying on numerous factors, along with the water temperature, pH, and dissolved ion concentrations. Historical American sculptors valued limestone as it becomes clean to work and accurate for the fine element.

Thus, option (B) is correct.

Note: Limestone is extraordinarily durable. It does, but, absorbs water and, considering it is a carbonate rock, it's miles rather reactive while uncovered to acids or maybe mildly acidic rainwater, and it could suffer full-size deterioration.