Which of the following types of nuclear reactors is most prone to radioactive hazards ?
		A. Pressurised water reactor
B. Gas cooled reactor
C. Molten sodium cooled reactor
D. Boiling water reactor
		A. Pressurised water reactor
B. Gas cooled reactor
C. Molten sodium cooled reactor
D. Boiling water reactor
		A. Calcium
B. Sodium
C. Mercury
D. Zinc
		A. 0.01
B. 0.25
C. 1.2
D. 7
		A. Chain reaction and hence the power output by regulating the number of secondary neutrons
causing fission
B. Emission of hazardous radiation
C. Conversion of fissile material into fertile material
D. Velocity of the secondary neutrons
		A. Deuterium and tritium
B. U-233
C. Thorium
D. Heavy water
		A. Absence of earthquake prone zone in nearby areas
B. Abundant availability of water
C. Remotely located from residential areas
D. Proximity to fuel source
		A. Sustainment of chain reaction
B. Power generation on commercial scale
C. Economic power generation
D. None of these