When does a calcite column form in a cave?
Answer and explanation
Correct answer: When a stalactite and a stalagmite join
A calcite column forms when a ceiling-grown stalactite and a floor-grown stalagmite meet and become continuous. Mineral-rich water drips through the cave roof; evaporation and loss of carbon dioxide cause calcium carbonate to precipitate and build both features. When growth from above and below joins, the result is a column, so option C is correct. The other options describe wind, river, or marine processes unrelated to cave deposition.
Frequently asked questions
What is the correct answer to this question?
When a stalactite and a stalagmite join
Why is this the correct answer?
A calcite column forms when a ceiling-grown stalactite and a floor-grown stalagmite meet and become continuous. Mineral-rich water drips through the cave roof; evaporation and loss of carbon dioxide cause calcium carbonate to precipitate and build both features. When growth from above and below joins, the result is a column, so option C is correct. The other options describe wind, river, or marine processes unrelated to cave deposition.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Depreciation, Provisions, and Reserves.
