Of the following, which is the best fuel for a nuclear fusion reactor

Q-1: Of the following, which is the best fuel for a nuclear fusion reactor:

1) hydrogen
2) lithium
3) deuterium
4) helium
ANSWER: 3 -- DEUTERIUM

Q-2:In a spent fuel assembly, the radioactive elements having the longest half-lives are the:

1) fission products
2) actinides
3) activation products
4) radioisotopes of lead
ANSWER: 2 -- ACTINIDES

Q-3: Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses:

1) fissionable plutonium-239 as fuel.
2) a relatively low heat output.
3) neutrons moderated to relatively low energies.
4) liquid sodium as a coolant.
ANSWER: 3 -- NEUTRONS MODERATED TO RELATIVELY LOW ENERGIES.

Q-5: A fast reactor uses:

1) an extremely short time to get to the maximum operating reactivity.
2) uranium-235 as fuel.
3) heavy water as a coolant.
4) essentially unmoderated neutrons.
ANSWER: 4 -- ESSENTIALLY UNMODERATED NEUTRONS.

Q-6: Most of the new atoms formed when atoms in a nuclear reactor capture neutrons without fissioning are:

1) fission products
2) activation products
3) actinides
4) lead isotopes
ANSWER: 3 -- ACTINIDES

Q-8: Most of what we call background radiation comes from two sources. One is the naturally radioactive elements around us. What is the other source?

ANSWER: COSMIC RADIATION

Q-9:In 1932, the first ARTIFICIAL source of radiation was created in France by two famous scientists. Name the TWO scientists.

ANSWER: IRENE and FREDERIC (JOLIOT-)CURIE

Q-10: The average annual dose of NATURAL radiation by the average American is about:

1) 3 millirems
2) 30 millirems
3) 300 millirems
4) 3,000 millirems
ANSWER: 3 -- 300 MILLIREMS

Q-11: In the fission of U235, what is the average number of neutrons produced in the fission reaction?

1) 1.5
2) 2.5
3) 3.5
4) 4.5
ANSWER: 3 -- 2.5