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

Explanation:

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If you were all alone in the universe with no one to talk to, no one with which to share the beauty of the stars, to laugh with, to touch, what would be your purpose in life? It is other life it is love, which gives your life meaning. This is harmony. We must discover the joy of each other, the joy of challenge, the joy of growth.
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