Radioactivity

1. Which of the following is not among some of the hazards of radiation?

Question 1 of 34

2. Alpha particles are heavier than beta particles hence less deflected in a magnetic field compared to beta particles?

Question 2 of 34

3. Which radioactive emission has the strongest ionizing power?

Question 3 of 34

4. Give the main difference between X-rays and Gamma rays?

Question 4 of 34

5. Explain what occurs when an Alpha particle is emitted?

Question 5 of 34

6. Which of the following statement is INCORRECT about Nuclear fusion?

Question 6 of 34

7. The time taken for half the number of nuclides initially present in a radioactive sample to decay is called HALF-LIFE. True or False?

Question 7 of 34

8. The fusing together of nuclei to form a heavier nucleus is called?

Question 8 of 34

9. Positively charged radioactive emissions are called?

Question 9 of 34

10. Mention the 2 cloud chambers used to detect and observe the effect of the ionization of particles by radiations?

Question 10 of 34

11. Which of the following statement is CORRECT about Nuclear Fission?

Question 11 of 34

12. Mention the radioactive emission which has the weakest ionizing power

Question 12 of 34

13. The limit of the penetration power of Beta particles is what material?

Question 13 of 34

14. Gamma rays penetration power is only stopped by what material?

Question 14 of 34

15. Which of the following statements is CORRECT about radioactive decay?

Question 15 of 34

16. Atoms which have the same atomic number but different mass number are called?

Question 16 of 34

17. Name some of the sources of background radiation?

Question 17 of 34

18. Background radiation is the presence of radiation even in the absence of a radioactive source. True or False?

Question 18 of 34

19. State the applications of radioactivity?

Question 19 of 34

20. Explain what occurs when Gamma radiation is emitted?

Question 20 of 34

21. Define radioactivity

Question 21 of 34

22. Negatively charged radioactive emissions are called?

Question 22 of 34

23. Which of the following does NOT occur when a Beta particle is emitted?

Question 23 of 34

24. The penetration power of Alpha particles can be stopped by what material?

Question 24 of 34

25. The no. of protons in the nucleus is called the Atomic Number. True or False?

Question 25 of 34

26. The sum of protons and neutrons is called the Mass number?

Question 26 of 34

27. State the Decay Law

Question 27 of 34

28. Ionization effect is when alpha, beta or Gamma radiation knock off electrons from air molecules resulting in the formation of positive ions?

Question 28 of 34

29. When a nucleus is bombarded and it splits it is said to have undergone?

Question 29 of 34

30. Gamma radiations have the highest penetration effect followed by beta particles then alpha particles. True or False?

Question 30 of 34

31. Mention the precautions of handling radioactive elements

Question 31 of 34

32. Give the formula of Half-life of a radioactive element?

Question 32 of 34

33. How are radiations emitted by radioactive elements identified?

Question 33 of 34

34. The uncharged radioactive emissions are called?

Question 34 of 34