Multiple choice general knowledge science & technology

Stalactites and stalagmites consist of deposits of

  1. Silica

  2. Sodium Bicarbonate

  3. Calcium Carbonate

  4. Magnesium Carbonate
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C Correct answer
Explanation

Stalactites (hanging from cave ceilings) and stalagmites (rising from floors) form primarily from calcium carbonate deposited by mineral-rich groundwater. While some formations contain silica, calcium carbonate is the dominant material. Sodium and magnesium carbonates are not the main components.

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