Question 39
Question 39 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
5. Nuclear physics
5.2.6. Safety precautions

Explain how radioactive materials are moved, used and stored in a safe way, with reference to: (a) reducing exposure time (b) increasing distance between source and living tissue (c) use of shielding to absorb radiation

5. Nuclear physics
5.2.1. Detection of radioactivity

Know the sources that make a significant contribution to background radiation including: (a) radon gas (in the air) (b) rocks and buildings (c) food and drink (d) cosmic rays

1. Motion, forces and ene...
1.7.3. Energy resources

Describe advantages and disadvantages of each method limited to whether it is renewable, when and whether it is available, and its impact on the environment