By hydraulic washing, the ore of which of the following metals can be concentrated?

Options :
  1. Tin
  2. Sodium
  3. Iron
  4. Manganese
Answer and Explanation :-

Answer: Option 1


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Why, what is to live? Not to eat and drink and breathe,-but to feel the life in you down all the fibres of being, passionately and joyfully. Elizabeth Barrett Browning, The Letters of Robert Browning and Elizabeth Barret Barrett 45-
-46 Vol I