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5.2.5 Effects of ionising radiation and safety precautions

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Question 18

Which row in the table correctly states a harmful effect and a beneficial effect of ionizing radiation?

Harmful effectBeneficial effectAkills bacteria on foodkills bacteria on foodBkills bacteria on fooddamages DNA in healthy cellsCdamages DNA in healthy cellskills bacteria on foodDdamages DNA in healthy cellsdamages DNA in healthy cells \begin{array}{|c|c|c|} \hline & \text{Harmful effect} & \text{Beneficial effect} \\ \hline \text{A} & \text{kills bacteria on food} & \text{kills bacteria on food} \\ \hline \text{B} & \text{kills bacteria on food} & \text{damages DNA in healthy cells} \\ \hline \text{C} & \text{damages DNA in healthy cells} & \text{kills bacteria on food} \\ \hline \text{D} & \text{damages DNA in healthy cells} & \text{damages DNA in healthy cells} \\ \hline \end{array} ABCD​Harmful effectkills bacteria on foodkills bacteria on fooddamages DNA in healthy cellsdamages DNA in healthy cells​Beneficial effectkills bacteria on fooddamages DNA in healthy cellskills bacteria on fooddamages DNA in healthy cells​​
A

Row A

B

Row B

C

Row C

D

Row D

Markscheme

5.2.5 Effects of ionising radiation and safety precautions Questions

  1. IGCSE
  2. /Physics
  3. /5.2.5 Effects of ionising radiation and safety precautions

42 exam-style questions on CIE IGCSE Physics 5.2.5 Effects of ionising radiation and safety precautions. Each one has a worked solution and a mark scheme showing where the marks go.

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