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5/39 MCQs for:

Radioactivity

Ionizing radiation can cause:

DNA mutations and cancer.

Rapid healing.

Cooling of tissues.

Improved eyesight.

Which of the following is most dangerous if inhaled or ingested?

Visible light.

Beta emitter.

Gamma emitter.

Alpha emitter.

Which particle has no charge?

Gamma.

Neutron.

Beta.

Alpha.

The activity of a radioactive sample drops from 800 counts/seconds to 200 counts/second in 24 hours.

The half life of the sample is:

8 hours.

12 hours.

24 hours.

3 hours.

Nuclear fission produces:

Energy and radioactive isotopes.

Only sound.

Only heat.

Only light.