Nandhini

Nice answer, your concept is good. Introduction is fine, however rather than mentioning dissolution you can mention chemical erosion/weathering..as dissolution might signify complete dissolution.
Conditions mentioned are good, also rocks need to be non-porous and thickly bedded for the limestones to be effectively corroded, if they are porous water can pass through and the whole rock mass can collapse.
Diagrams are good. Different landforms have been mentioned, that is also good- label every diagram.
In distribution across the world, you can mention Yugoslavia separately as the term Karst originated from there only, also regions of France(Causes region), Spain and US(Virginia, central Florida etc) can be mentioned. In India, Himalayas can also be mentioned(some areasin J&K and near Dehradun).
Conclusion is fine.
Keep writing. 🙂

5.5/10