Heavy water is used as moderator a?nuclear reactor. The function of the moderator is
1). to control the energy released in the reactor
2). to absorb neutrons and stop the chain?reaction
3). ?to cool the reactor
4). to slow down the neutrons to thermal energy
1. Superconductors are those elements
3. The plastic material commonly used for making gear wheels is
4. The metal whose electrical conductivity is more is
5. Which of these waves can be polarized ?
6. The warm and cold ocean currents are caused by
7. In a filament type light bulb most of the electric power consumed appears as
9. Which type of reaction produces the most harmful radiation ?