GOV EXAM ADDA

1. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind

Answer & Solution

8. Natural radioactivity was discovered by-

A. Ernest Rutherford

B. Enrico Fermi

C. Marie Curie

D. Henri Becquerel

Answer & Solution

9. X-ray fail to pass through

Answer & Solution

10. Hydrogen bomb is based on-

A. Artificial radioactivity reactions

B. Neutral radioactivity

C. Nuclear fission

D. Nuclear fusion

Answer & Solution

11. In India Nuclear Weapon was tested at

Answer & Solution

12. Which of the following element does not show radioactivity?

Answer & Solution

13. Radioactive decay of Uranium resulted the formation of final product

Answer & Solution

14. The electron emitted in bête radiation originates from

A. Decay of a neutron in a nuclei

B. Photon escaping from the nucleus

C. Inner orbits of atoms

D. Free electrons existing in a nuclei

Answer & Solution

15. Phenomenon of radioactivity was discovered by

Answer & Solution

16. The most suitable unit to express the nuclear radius is

Answer & Solution

17. What is the unit the physical quantity, radio activity?

Answer & Solution

18. Which one of the following is not a radioactive element?

Answer & Solution

19. Radioactivity is the fission of

Answer & Solution

20. Radioactivity is measured by

Answer & Solution

1. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind

2. Which of the following isotopes is used in dating archaeological findings

3. Rate of radiation of heat from a body is highest if its surface is

4. The radioactive element used in heart pacemakers is

5. Radioactive decay of uranium products

6. Radiocarbon dating technique is used to estimate the age of

7. Neutron was discovered by

8. Natural radioactivity was discovered by-

9. X-ray fail to pass through

10. Hydrogen bomb is based on-

11. In India Nuclear Weapon was tested at

12. Which of the following element does not show radioactivity?

13. Radioactive decay of Uranium resulted the formation of final product

14. The electron emitted in bête radiation originates from

15. Phenomenon of radioactivity was discovered by

16. The most suitable unit to express the nuclear radius is

17. What is the unit the physical quantity, radio activity?

18. Which one of the following is not a radioactive element?

19. Radioactivity is the fission of

20. Radioactivity is measured by