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The radioisotope used in industrial radiography…

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The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is…

A. carbon – 14

B. Phosphorus – 32

C. Cobalt- 60

D. Iodine – 131

QUICK ANSWER…

C

SOLUTION…  

Radioisotopes are often employed in industrial radiography to conduct checks for underground pipeline leakages and faulty cracks in castings.

The actual rays used to conduct this radiography is either x-rays from artificial x-ray guns, or gamma rays from natural radioactive elements like cobalt-60 or iridium-192.

Now for the right answer to the above question:

  1. Option A is incorrect. carbon-14 decay gives a beta particle and not x-ray nor gamma ray which are the radiations necessary for a successful radiography.
  2. Option B is also incorrect. phosphorus-32 also emits beta particles and not gamma rays.
  3. C is correct. Cobalt-60 emits gamma rays which is very useful in industrial radiography.
  4. D is not the correct answer. Iodine-131 also decays to emit beta particles and not gamma rays.

QUICK TIPS…

You may please note these/this:

  • Non-particulate radiations like gamma and x-rays are ideal for use in industrial radiography.
  • Beta particles, not currently used to detect underground cracks.

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/ culled from 2018 JAMB-UTME Chemistry question 21 /

The radioisotope used in industrial radiography... » QuizTablet
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