Explanation: Umarangsho is a village located in the Dima Haso district of Assam, India. The region is renowned for its significant limestone deposits, which are a crucial part of its geological and economic landscape. Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO3) and is formed over millions of years through the accumulation and compression of marine organisms and other calcium-rich materials.
Limestone has a wide range of applications in various industries. In construction, it is used as a raw material for the production of cement and lime, which are essential components in building materials such as concrete and mortar. In agriculture, limestone is used to neutralize acidic soils and improve soil fertility. Additionally, limestone is used in the manufacturing of glass, paper, and pharmaceuticals.
The presence of limestone in Umarangsho is a result of the region's geological history. Assam, being part of the northeastern region of India, has a complex geological structure with diverse mineral deposits. The limestone deposits in Umarangsho are a testament to the area's rich geological heritage and its potential for economic development through mining and related industries.
It is important to note that while Umarangsho is known for its limestone, the region may also have other mineral resources. However, the specific fame of Umarangsho is tied to its limestone deposits. This makes it a significant area for geological studies and economic activities related to limestone mining and processing.
Understanding the mineral resources of a region like Umarangsho is crucial for students of geography and those interested in the economic development of regions. It highlights the importance of natural resources in shaping the economic activities and industrial landscape of a region. The correct answer, therefore, is B) Limestone, as it accurately reflects the primary mineral resource associated with Umarangsho.