Nuclear Power Engineering
'Heavy water' is termed as 'heavy' because it is

A heavy liquid
Denser than water
An oxide of heavier isotope of oxygen
An oxide of deuterium

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Nuclear Power Engineering
Plutonium

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

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