Nuclear Power Engineering
Uranium is recovered from its ore (pitchblende) by

Leaching with sulphuric acid
Smelting in a furnace
Froth floatation technique
Dissolving in water

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Nuclear Power Engineering
Plutonium

Has much lower melting point (640°C ) compared to thorium (1690°C)
Is recovered from spent fuel from thermal nuclear reactor
Neither A nor B
Both A & B

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