Question

In which areas the Karst landforms are formed?
A. Desert areas
B. Glacial areas
C. Limestone areas
D. River valleys

Answer 1

Hint: Karst topography is formed from dissolution of rocks that are soluble such as dolomite, gypsum etc. The rocks found in this area are one of the carbonate sedimentary rocks. These rocks are also called chalk or calcium carbonate and they get easily dissolved in water.

Complete Answer:
1.Karst landforms usually develop in those areas where there are thick beds of massive limestones that lie just below the layer of surficial materials.
2. For the formation of Karst landforms the limestones must be huge, thickly bedded, well cemented and well jointed, hard and tenacious.
3.Karst, terrain usually is characterized by barren or rocky ground, caves, sinkholes, underground rivers, absence of surface streams or lakes. It results from the effects of excavation of underground water on huge soluble limestone.

Let us find the correct answer,
Option A is not the correct option because desert areas don’t have Karst landforms. Desert areas are usually barren places with only sand.
Option B is incorrect as Karst landforms are not seen in glacial areas. Glacial areas have a lot of ice in them. Ice can melt easily.
Option C is the correct option as Karst landform is made up from limestone. Limestone is also soluble in water. Limestone is soft
Option D is wrong because river valleys don’t have Karst landforms.

Hence option C is the correct answer.

Note: Limestone is being formed in various seas like Caribbean Sea, Indian Ocean and Persian Gulf, Gulf of Mexico, also around Pacific Ocean islands, and seen with Indonesian archipelago. Karst landforms have weather resistant rocks such as quartzite. The term karst is derived from German language of the Slav word, krs or kras, which means rock.