Question detail

What distinguishes irradiation from contamination?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Atoms and nuclear radiation

Question

A. Irradiation involves exposure to radiation, while contamination involves radioactive atoms being present.
B. Irradiation can be beneficial, while contamination is always harmful.
C. Irradiation occurs only in laboratories, while contamination can happen anywhere.
D. Irradiation is a process, while contamination is a type of radiation.

Answer

The correct answer is A: Irradiation involves exposure to radiation, while contamination involves radioactive atoms being present..

Explanation

The correct answer is A: Irradiation involves exposure to radiation, while contamination involves radioactive atoms being present.. This supports the learning objective "Distinguish contamination from irradiation." in Radioactive contamination because it uses the correct atomic and nuclear radiation relationship for Atoms and nuclear radiation. The other options are less suitable because they do not match the required Radioactive contamination idea: Irradiation can be beneficial, while contamination is always harmful.; Irradiation occurs only in laboratories, while contamination can happen anywhere.; Irradiation is a process, while contamination is a type of radiation..

Common mistake

Contamination vs Irradiation Confusion

Students often confuse radioactive contamination with irradiation, thinking that both terms mean the same thing.

To fix this, remember that contamination refers to the unwanted presence of radioactive atoms on or inside an object or person, while irradiation is simply exposure to ionising radiation from a radioactive source.

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