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Which of the following are man-made sources of radioactive pollution?
1. Terrestrial radiations from radio-nuclides present in earth’s crust
2. Uranium mining
3. Radiation therapy
4. Transportation of nuclear material
Select the correct answer using code given below:
  • a)
    1 only
  • b)
    1 and 3 only
  • c)
    2 and 4 only
  • d)
    2, 3 and 4 only
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
Which of the following are man-made sources of radioactive pollution?1...
Explanation;
because all these are the results of human efforts except terrestrial radiation because they are natural..
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Community Answer
Which of the following are man-made sources of radioactive pollution?1...
• Statement 1 is incorrect: Terrestrial radiations from radio-nuclides present in earth’s crust is natural source of radioactive pollution.
Radioactive Pollution
• Radioactivity is a phenomenon of spontaneous emission of proton (a-particles), electrons (ß-particles) and gamma rays (short wave electromagnetic waves) due to the disintegration of atomic nuclei of some elements. These cause radioactive pollution.
• Sources
• Natural
• They include cosmic rays from space and terrestrial radiations from radionuclides present in earth’s crust such as radium-224, uranium-238, thorium232, potassium- 40, carbon-14, etc
• Man-made
1. Nuclear power plants
2. Nuclear weapon
3. Transportation of nuclear material
4. Disposal of nuclear waste
5. Uranium mining
6. Radiation therapy
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Which of the following are man-made sources of radioactive pollution?1. Terrestrial radiations from radio-nuclides present in earth’s crust2. Uranium mining3. Radiation therapy4. Transportation of nuclear materialSelect the correct answer using code given below:a)1 onlyb)1 and 3 onlyc)2 and 4 onlyd)2, 3 and 4 onlyCorrect answer is option 'D'. Can you explain this answer?
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