Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Mineralsmedium · 45s
Which mineral is formed by the metamorphism of limestone?
TopicMinerals
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Marble forms through the metamorphism of limestone or dolomite under heat and pressure. During this process, the original calcite or dolomite crystals recrystallize into larger, interlocking crystals, creating marble's characteristic texture and appearance. Marble has been prized for centuries for sculpture and architecture due to its workability, beauty, and durability.
Final Answer: Option A - Marble