[{"id":166462,"question":"When a heavy nucleus splits into, lighter nuclei, the process would .","choices":[{"text":"Release nuclear energy","value":"A"},{"text":"Absorb nuclear energy","value":"B"},{"text":"Release chemical energy","value":"C"},{"text":"Absorb chemical energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":166460,"question":"Release of energy by the sun is due to","choices":[{"text":"Nuclear fission","value":"A"},{"text":"Nuclear fusion","value":"B"},{"text":"Burning of gases","value":"C"},{"text":"Chemical reaction","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":166459,"question":"When a uranium (92 protons) ejects a beta particle, how many protons are left in the remaining nucleus?","choices":[{"text":"92 protons","value":"A"},{"text":"91 protons","value":"B"},{"text":"93 protons","value":"C"},{"text":"89 protons","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":166446,"question":"What happen to the atomic number of an element which emits one alpha particle and a beta particles.","choices":[{"text":"Increases by 1","value":"A"},{"text":"Stay the same","value":"B"},{"text":"Decrease by 2","value":"C"},{"text":"Decrease by 1","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":166442,"question":"One of the isotopes of uranium is<sup> 238</sup>U<sub>92</sub>the number of neutrons in the isotopes is.","choices":[{"text":"92","value":"A"},{"text":"146","value":"B"},{"text":"238","value":"C"},{"text":"330","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":166441,"question":"isotopes are atom of same element with different.","choices":[{"text":"Atomic mass","value":"A"},{"text":"Atomic number","value":"B"},{"text":"Number of proton","value":"C"},{"text":"Number of electron","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40571,"question":"The process of breaking a heavy nucleus after the bombardment of neutrons into two small nuclei is called:","choices":[{"text":"Nuclear fission reaction","value":"A"},{"text":"Nuclear fusion reaction","value":"B"},{"text":"Nuclear Radiation","value":"C"},{"text":"Nuclear chain reaction","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40570,"question":"Which element is used to locate the ulcer in brain?","choices":[{"text":"Iodine-131","value":"A"},{"text":"Phosphorus-32","value":"B"},{"text":"Carbon-14","value":"C"},{"text":"Potassium-40","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40569,"question":"Which element is used for the monitoring of thyroid glands?","choices":[{"text":"Iodine- 131","value":"A"},{"text":"Phosphorus-32","value":"B"},{"text":"Carbon-14","value":"C"},{"text":"Potassium-40","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40568,"question":"The half life of radium - 226 is 1620 years. If N is its total amount then after the four half lives, its left amount will be:","choices":[{"text":"1/2 N","value":"A"},{"text":"1/4 N","value":"B"},{"text":"1/8 N","value":"C"},{"text":"1/16 N","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":40567,"question":"The phenomenon in which radiations convert the matter into positive and negative ions is called:","choices":[{"text":"Radio activity","value":"A"},{"text":"Excitation","value":"B"},{"text":"Ionization","value":"C"},{"text":"Electrolysis","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40566,"question":"The symbol of alpha particles is:","choices":[{"text":"4AHe","value":"A"},{"text":"42He","value":"B"},{"text":"0-1B","value":"C"},{"text":"00Y","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40565,"question":"Radiations present in atmosphere due to the presence of different radioactive elements are:","choices":[{"text":"Cosmic radiations","value":"A"},{"text":"Background radiations","value":"B"},{"text":"secondary radiations","value":"C"},{"text":"Electromagnetic radiations","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40564,"question":"Which radiations are free of effect of electric and magnetic field?","choices":[{"text":"Alpha","value":"A"},{"text":"Beta","value":"B"},{"text":"Gamma","value":"C"},{"text":"Alpha and beta","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":40563,"question":"Who discovered the phenomenon of natural radioactivity?","choices":[{"text":"Henry Becurial","value":"A"},{"text":"Merry Curi","value":"B"},{"text":"Perry","value":"C"},{"text":"Rutherford","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40562,"question":"The number of neutrons in the nucleus of tritium is:","choices":[{"text":"1","value":"A"},{"text":"2","value":"B"},{"text":"3","value":"C"},{"text":"4","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":40561,"question":"The symbol of atomic mass number is:","choices":[{"text":"A","value":"A"},{"text":"X","value":"B"},{"text":"N","value":"C"},{"text":"Z","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":40560,"question":"Which particles are nucleons?","choices":[{"text":"Electrons and protons","value":"A"},{"text":"Protons and neutrons","value":"B"},{"text":"Electrons and neutrons","value":"C"},{"text":"Electrons and positrons","value":"D"},{"value":"E"}],"correctAnswer":2}]