How does groundwater form caves in limestone areas?
Answer and explanation
Correct answer: By dissolving limestone
Rainwater absorbs carbon dioxide from the atmosphere and soil, forming a weak carbonic-acid solution. As this water moves through cracks and joints, it gradually dissolves soluble limestone, enlarging underground passages and chambers into caves. Hence option A is correct. Blowing sand is wind abrasion, glacier movement is an ice process, and sea waves are a marine agent, so those choices do not explain limestone cave formation.
Frequently asked questions
What is the correct answer to this question?
By dissolving limestone
Why is this the correct answer?
Rainwater absorbs carbon dioxide from the atmosphere and soil, forming a weak carbonic-acid solution. As this water moves through cracks and joints, it gradually dissolves soluble limestone, enlarging underground passages and chambers into caves. Hence option A is correct. Blowing sand is wind abrasion, glacier movement is an ice process, and sea waves are a marine agent, so those choices do not explain limestone cave formation.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Accounting Information.
