Multiple choice general knowledge science & technology

From which mineral is radium obtained?

  1. Rutile

  2. Haematite

  3. Limestone

  4. Pitchblende
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D Correct answer
Explanation

Pitchblende (also known as uraninite) is a uranium-rich mineral ore that served as the primary historical source for radium extraction. Marie Curie processed tons of pitchblende to isolate radium. Rutile is a titanium ore, haematite is an iron ore, and limestone is calcium carbonate.

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