[{"id":172387,"question":"The half life of plutonium<sup> 236</sup>Pu<sub>94 </sub>is:","choices":[{"text":"2.00 years","value":"A"},{"text":"2.35 years","value":"B"},{"text":"2.79 years","value":"C"},{"text":"2.85 years","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":172386,"question":"The half life of argon nuclide Ar-40 is:","choices":[{"text":"2 x 10<sup>8 </sup>years","value":"A"},{"text":"2 .2x 10<sup>8</sup>years","value":"B"},{"text":"2.4x 10<sup>8</sup>years","value":"C"},{"text":"2.8x 10<sup>8</sup>years","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":172385,"question":"Safe limit of radiations exposure in one year.","choices":[{"text":"4 rem","value":"A"},{"text":"5 rem","value":"B"},{"text":"3 rem","value":"C"},{"text":"6 rem","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":172384,"question":"Radiation was found in:","choices":[{"text":"1896","value":"A"},{"text":"1895","value":"B"},{"text":"1897","value":"C"},{"text":"1898","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":172376,"question":"The half life of carbon -14 is:","choices":[{"text":"5730 years","value":"A"},{"text":"5740 years","value":"B"},{"text":"5750 years","value":"C"},{"text":"5760 years","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":172372,"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":172371,"question":"Release of the energy by the sun is due to:","choices":[{"text":"Nuclear Fussion","value":"A"},{"text":"Nuclear Fission","value":"B"},{"text":"Burning of gases","value":"C"},{"text":"Chemical reaction","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":172370,"question":"When a Uranium (92 protons)ejects a beta particle, how many protons are left in the remaining nucleus?","choices":[{"text":"89 Protons","value":"A"},{"text":"90 Protons","value":"B"},{"text":"91 Protons","value":"C"},{"text":"93 Protons","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":172369,"question":"The Half life of a certain isotopes is 1 day. What is the quantity of isotopes after 2 days?","choices":[{"text":"One half","value":"A"},{"text":"One quarter","value":"B"},{"text":"One eight","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":172368,"question":" What happen to the atomic number of an element which emits one alpha particle?","choices":[{"text":"Increase by 1","value":"A"},{"text":"Stays the same","value":"B"},{"text":"Decrease by 2","value":"C"},{"text":"Decrease by 1","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":172367,"question":" Which among the following radiation has more penetrating power?","choices":[{"text":"A beta pareticle","value":"A"},{"text":"A gamma particle","value":"B"},{"text":"An alpha particle","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":172365,"question":"Isotopes are atoms 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 Neutron","value":"D"},{"value":"E"}],"correctAnswer":1}]