Which mineral was used in isolation of radium

Options :
  1. lime stone
  2. pitch blend
  3. rutile
  4. Haematite
Answer and Explanation :-

Answer: Option 2

Explanation:

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Why do they always teach us that it's easy and evil to do what we want and that we need discipline to restrain ourselves? It's the hardest thing in the world--to do what we want. And it takes the greatest kind of courage. I mean, what we really want.
-Ayn Rand