Q.

Thermal shield is used in high powered nuclear reactors to  

A. absorb the fast neutrons
B. protect the walls of the reactor from radiation damage
C. slow down the secondary neutrons
D. protect the fuel element from coming in contact with the coolant
Answer» B. protect the walls of the reactor from radiation damage
Explanation: thermal shield is used in high powered nuclear reactors to protect the walls of the reactor from radiation damage.
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