Practice MCQs For Radioactivity and the nuclear atom



This quiz contains practice questions for GCE ‘O’ level topic: Radioactivity and the nuclear atom. There are explanations for some of the questions after you submit the quiz. If you could not figure out why a particular option is the answer, feel free to drop a comment below or ask a question in ‘O’ & ‘A’ Level Discussion section of the forum. If you wish to contribute questions to this quiz, please contact us.

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1. Which statement is true for all three types of radioactive emission (alpha-particles, beta-particles and gamma-rays)?
2. There are possible dangers when dealing with radioactive substances.

Which statement is correct?
3. The half-life of radioactive carbon is 5600 years. What will be the time after which the activity has reduced to one-quarter?
4. A radioactive isotope has a half-life of 2 minutes.

What can be deduced from this statement?
5. The half-life of a radioactive material is 24 years.

The activity of a sample falls to a fraction of its initial value after 72 years.

What is the fraction?
6. Which statement defines isotopes?
7. Atoms P and Q are isotopes. How does the composition of neutral atom P compare with neutral atom Q?

isotope qn
8. What is the safest way to dispose of a large quantity of highly radioactive waste?
9. A radioactive source has a half-life of 24 hours. At 1:00 am, it has an activity of 1000 counts per minute. At 1:00 pm on the same day, what is its most likely activity?
10. Which conclusion can be drawn from the Geiger-Marsden alpha-particle scattering experiment?

 

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