25. The neutral atom’s two isotopes differ in the number of:
(a) Neutrons(b) Protons(c) Electron shells(d) None of these
25. The neutral atom’s two isotopes differ in the number of: Read More »
24. The main important feature of neutron bomb is that when it is dropped on a city, it would damage:
(a) The living organisms but spare buildings(b) Both the living organisms and buildings(c) The buildings but not living organisms(d) None of these
23. According to Dalton’s atomic theory, the smallest particle which can exist independently is:
(a) A cation(b) An atom(c) A molecule(d) An anion
22. Which of the following elements is not-radioactive?
(a) Zirconium(b) Thorium(c) Uranium(d) Plutonium
22. Which of the following elements is not-radioactive? Read More »
21.Old written material, which cannot be read easily, can be read by:
(a) Infra red rays(b) Cosmic rays(c) Ultra-violet rays(d) None of these
21.Old written material, which cannot be read easily, can be read by: Read More »
20. Who suggested that most of the atom is located in the nucleus?
(a) Bohr(b) Rutherford(c) Thomson(d) None of these
20. Who suggested that most of the atom is located in the nucleus? Read More »
18. Isotopes are separated by:
(a) Filtration(b) Distillation(c) Sublimation(d) None of these
18. Isotopes are separated by: Read More »
17. Which of the following is used as a moderator in nuclear reactor?
(a) Ordinary water(b) Radium(c) Graphite(d) Thorium
17. Which of the following is used as a moderator in nuclear reactor? Read More »
16. Atoms are composed of:
(a) Electrons(b) Protons(c) Neutrons(d) All of these
16. Atoms are composed of: Read More »