1. The physical properties of an atom is related to
(A) Nucleus
(B) Electron
(C) Proton
(D) Neutron
2. The spontaneous emission of radiations from certain elements is called
(A) Radioactivity
(B) Half life
(C) Isotopes
(D) Uranium-235
3. The radioactive elements are
(A) Unstable
(B) Stable
(C) Radioactivity
(D) Half life
4. For artificial radioactivity elements are broken down
(A) Unstable
(B) Stable
(C) Radioactivity
(D) Half life
5. Alpha rays carry a charge
(A) Negative
(B) Positive
(C) Neutral
(D) Zero
6. Beta rays are actually fast moving
(A) Nucleus
(B) Electron
(C) Proton
(D) Neutron
7. Rays have no charge and mass as well
(A) Gamma
(B) Beta
(C) Alpha
(D) No one
8. Rays are more powerful than x-rays
(A) Gamma
(B) Beta
(C) Alpha
(D) No one
9. The disintegration of radioactive elements into their half quantity is called
(A) New life
(B) Life less
(C) Old life
(D) Half life
10. Fission means
(A) To add
(B) To break
(C) To waste
(D) To acquire
11. Fusion means
(A) To break
(B) To waste
(C) To add
(D) To acquire
12. One atom of uranium-235 emits neutron on breaking
(A) 1
(B) 2
(C) 4
(D) 3
13. The transformation of one element into another is only possible in reactions
(A) Fusion
(B) Nuclear
(C) Fission
(D) Neutral
14. All isotopes are
(A) Radioactive
(B) Fusion
(C) Stable
(D) Half life
15. The isotope of cobalt is helpful to kill the cancerous cell
(A) Co59
(B) Co60
(C) Co61
(D) Co62
16. The study of genetic changes in plants and animals is studied with the help of
(A) Radioactivity
(B) Radioactive isotopes
(C) Alpha rays
(D) Beta rays
17. The structure and nature of polymers can be determined with the help of
(A) Alpha rays
(B) Radioactivity
(C) Radioactive isotopes
(D) Beta rays
18. The half life of C14 is years
(A) 5568
(B) 5569
(C) 5567
(D) 5577
19. An archaeologist determined the age of Egyptian pyramids
(A) Einstein
(B) Libby
(C) Curie
(D) Goldsmith
20. Which isotope of carbon exists
(A) 6C12
(B) 6C13
(C) 6C14
(D) 6C15