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49.

The unit of radio-activity is                        
A. electron-volt B. electron-ampere
C. curie D. MeV



50.

Pick up the wrong statement Fast breeder reactors                        
A. operate at extremely high power densities. B. are liquid-metal cooled
C. produce more fuel than they consume D. are unmoderated



51.

Uranium-233 is produced                        
A. as basic raw material B. by neutron irradiation of Uz
C. by neutron irradiation of thorium D. artificially




52.

Plutonium-239 is produced                        
A. as basic raw material B. by neutron irradiation of IT
C. by neutron irradiation of thorium D. artificially



53.

Which of the following type of pump is used in liquid metal cooled reactor for circulation of liquid metal                        
A. centrifugal B. axial
C. reciprocation D. electromagnetic



54.

Which of the following is the primary fuel                        
A. Ulii B. U
C. U238 D. Pu:



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