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5/39 MCQs for:

Radioactivity

A common natural source of radiation is:

Cosmic rays.

Microwaves.

X-ray machines.

MRI.

Which particle is the heaviest among common radioactive emissions?

Gamma ray.

Alpha particle.

Neutrino.

Beta particle.

Which type of radiation requires thick lead or concrete for shielding?

None.

Beta.

Gamma.

Alpha.

Which of the following radioisotopes is used to monitor the functioning of the thyroid gland?

Phosphorus - 32.

Carbon - 14.

Iodine - 131.

Sodium - 24.

Nuclear fission produces:

Only sound.

Only heat.

Only light.

Energy and radioactive isotopes.