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6.2 Uses and hazards

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Question 33
H

Radon-222 is a radioactive gas that can collect in some homes. It emits alpha particles and has a half-life of 3.8 days3.8\ \text{days}3.8 days.

Why is radon gas a significant hazard to people living in these homes?

[1]
A

It is breathed in, but its alpha particles pass out of the lungs harmlessly

B

It stays outside the body, but its alpha particles travel through the walls

C

It is breathed in, but its long half-life means that its activity is very low

D

It is breathed in, and its alpha particles are absorbed by cells in the lungs

Markscheme

6.2 Uses and hazards Questions

  1. GCSE
  2. /Physics
  3. /6.2 Uses and hazards

48 exam-style questions on OCR GCSE Physics 6.2 Uses and hazards, covering 6.2.1 Contamination and irradiation, 6.2.2 Half-life and radiation hazards, 6.2.3 Medical uses of nuclear radiation, 6.2.4 Nuclear fission and chain reactions, and 6.2.5 Nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.

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