Which chemical process is most important in sinkhole formation?
Answer and explanation
Correct answer: Solution of limestone
The governing concept is karst solution. Rainwater absorbs carbon dioxide from the atmosphere and soil, forming a weak carbonic acid solution. As this water enters joints, it gradually dissolves soluble limestone, enlarging underground cavities that may later collapse as sinkholes. Wind abrasion and glacial plucking are mechanical erosional processes, while marine deposition builds sediments rather than dissolving limestone.
Frequently asked questions
What is the correct answer to this question?
Solution of limestone
Why is this the correct answer?
The governing concept is karst solution. Rainwater absorbs carbon dioxide from the atmosphere and soil, forming a weak carbonic acid solution. As this water enters joints, it gradually dissolves soluble limestone, enlarging underground cavities that may later collapse as sinkholes. Wind abrasion and glacial plucking are mechanical erosional processes, while marine deposition builds sediments rather than dissolving limestone.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Accounting Information.
