Complete and balance the following nuclear equation: `"_98^252 C_f` + `"_5^10 B``to`3`"_0^1 n` + ?

1. `"_93^241 Np`

2. `"_103^261 Lr`

3. `"_103^259 Lr`

4. `"_93^239 Np`

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Answer: C
Explanation:
• `"_98^252 C_f` + `"_5^10 B``to`3`"_0^1 n` + `"_103^259 Lr` Sum of atomic numbers and mass numbers on both sides must be equal.
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Pu-239 is produced from U-238 in the breeder reaction. This might involve:

1. alpha-particle absorption followed by emission of three neutrons
2. proton absorption followed by positron emission
3. neutron absorption followed by emission of two beta-particles.
4. neutron absorption followed by emission of two positron.
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Answer: C
Explanation:
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The energy produced by the sun makes use of which nuclei?

1. Pu
2. U
3. Li
4. H
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Answer: D
Explanation:
• Due to fusion reaction of H-isotopes.
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In cancer treatment, radiation is used to:

1. obtain images of diseased region
2. relieve pain
3. destroy cancer causing substances
4. destroy cancer cells
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Answer: D
Explanation:
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Food irridiation is done to:

1. precook food
2. kill micro-organisms
3. kill insects
4. increase nutrient value
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Answer: B
Explanation:
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A cyclotron is used to get:

1. positrons
2. neutrons
3. energetic ions
4. magnetic fields
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Answer: C
Explanation:
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The recation of H² and H³ to produce He⁴ and a neutron is the example of:

1. a fusion reaction
2. a fission reaction
3. both fission and fusion reactions
4. transmutation
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Answer: A
Explanation:
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Nuclear fusion reaction:

1. takes place in the sun
2. is used in atomic bomb
3. takes place in fusion reactor
4. uses large nuclides
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Answer: A
Explanation:
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A moderator in the nuclear reactor serves to:

1. accelerates neutrons
2. provide fissionable isotopes
3. slow neutrons
4. diminish the nuclear binding energy
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Answer: C
Explanation:
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A short-time exposure to a radiation dose of 100 - 200 rems will cause what health effects?

1. a slight temporary decreases in white blood cell counts
2. nausea and marked decrease in white blood cells
3. death of half the exposed population with in 30 days after exposure
4. there are no detectable clinical effects
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Answer: B
Explanation:
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