WAEC Physics 2013 Objective — Question 49
Question 49 of 50 from the West African Examinations Council (WAEC) Physics 2013 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about the use of radioisotopes is not correct? They are used to
- A. induce mutations in plants and animals to obtain new and improved varietiesCorrect
- B. trace the paths of metabolic processes in plants and animals
- C. estimate the age of rocks
- D. locate broken bones
Explanation
The uses of radioisotopes include: radiotherapy; as tracers to check blood circulation, detect leaks in underground pipes, and trace metabolic processes in plants/animals; quality control (measuring paper thickness); tracing cracks in metals or bones; food preservation; and radioactive dating/age estimation. Per the printed answer key, the statement identified as incorrect is option A.
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