Which statement about fusion reactors is true? a Enriched uranium isotopes are used as fuel in fusion reactors. b Fuel for fusion reactors can be extracted form ocean water. c Fusion reactors are now replacing fission reactors. d Fusion reactors produce radioactive waste as spent fuel.

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Chemistry

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16 February, 18:03

Which statement about fusion reactors is true? a Enriched uranium isotopes are used as fuel in fusion reactors. b Fuel for fusion reactors can be extracted form ocean water. c Fusion reactors are now replacing fission reactors. d Fusion reactors produce radioactive waste as spent fuel.

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Adan Coffey · Answer 1

b Fuel for fusion reactors can be extracted from ocean water.

Explanation:

The fuel is deuterium, which makes up 0.02% of the hydrogen atoms in water. The oceans contain more than a billion cubic kilometres of water, so that's a lot of deuterium.

a is wrong. The fuel for fusion reactors is deuterium.

c is wrong. There is much research, but there are no large-scale fusion reactors in operation.

d is wrong. Fusion reactors do not produce radioactive waste as spent fuel. Most of the radioactive waste would be the reactor core itself.