The <coolant> removes <heat> from the fuel region and carries it to a <heat> exchanger or directly to a turbine system. It can also act as a <neutron moderator> in some reactor types, but cooling and moderation are distinct functions and need not be performed by the same material.

Solution

Past exam of the materials science course of the University of Cambridge / 2019 / Paper 1 / 6 / a / iv / Solution

 Solution (source code)