Nuclear Power Engineering
The disintegration rate of a radioactive element

May increase or decrease depending on the material
Progressively increases
Progressively decreases
Remains constant throughout

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Nuclear Power Engineering
Commercial power generation from fusion reactor is not yet possible, because

It is difficult to control fusion reaction
It is difficult to initiate fusion reaction
Quantity of fuel required for initiating fusion reaction is prohibitively high
The fuel required (e.g. deuterium and tritium) is scarce

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Nuclear Power Engineering
Plutonium

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

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