Power Systems
One Kg of natural uranium gives energy equivalent to about

 1000 Kg of coal.
 5000 Kg of coal.
  10500 Kg of coal.
 100 Kg of coal.

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Power Systems
In a pressurized water reactor

 the coolant water boils in the reactor core.
 water is used at high pressure so that it is available is liquid from at about 280° C.
  both B and C.
 heavy water is used as both coolant and moderator.

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