GEOLOGY

Detailed explanation-1: -Igneous rocks are usually solid and are more resistant to weathering. Intrusive igneous rocks weather slowly because it is hard for water to penetrate them. Sedimentary rocks usually weather more easily. For example, limestone dissolves in weak acids like rainwater.

Detailed explanation-2: -The most common feature that can be caused purely by chemical weathering is Karst Landscape, which can lead to caverns and sinkholes.

Detailed explanation-3: -The mineral calcite, which is common in limestone, is particularly vulnerable to carbonation. This mineral dissolves in the carbonic acid and gets washed away.

Detailed explanation-4: -Limestone and other sedimentary rocks that contain calcite are weathered most rapidly.