[{"id":266996,"question":"The nucleus of an atom is composed of","choices":[{"text":"Electrons","value":"A"},{"text":"Electons and protons","value":"B"},{"text":"Protons and neutrons","value":"C"},{"text":"Electrons and neutrons","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266995,"question":"Proton are feflected toward plate.","choices":[{"text":"Positive","value":"A"},{"text":"Negative","value":"B"},{"text":"Both a and b","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266994,"question":"Quantum means.","choices":[{"text":"Virable energy","value":"A"},{"text":"Fixed energy","value":"B"},{"text":"High energy","value":"C"},{"text":"Minimum energy","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266993,"question":"According to Rutherford's atomic theory, atom should produce.","choices":[{"text":"Line spectrum","value":"A"},{"text":"Continuous spectrum","value":"B"},{"text":"Both a and b","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266992,"question":"Who performed fist experiment to split atom","choices":[{"text":"Bohr","value":"A"},{"text":"Newton","value":"B"},{"text":"Rutherford","value":"C"},{"text":"Soddy","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266991,"question":"Rutherford used a gold foil in his experiment, which had a tickness of","choices":[{"text":"0,0002 cm","value":"A"},{"text":"0,0001 cm","value":"B"},{"text":"0.001 cm","value":"C"},{"text":"0.00004cm","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":266990,"question":"John Dalton put forward his atomic theory.","choices":[{"text":"1800","value":"A"},{"text":"1803","value":"B"},{"text":"1805","value":"C"},{"text":"1903","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266989,"question":"A sub sheel that cna accommodate 6 electrons is","choices":[{"text":"b","value":"A"},{"text":"s","value":"B"},{"text":"f","value":"C"},{"text":"p","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":266988,"question":"M shell has sub sheels.","choices":[{"text":"1s , 2s","value":"A"},{"text":"1s,2s,3s","value":"B"},{"text":"2s,2p","value":"C"},{"text":"3s,3p,3d","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266987,"question":"How doe electrons keep themselves away from the oppositely charged nucleus.","choices":[{"text":"A agnetic field around the nucleus keeps them away","value":"A"},{"text":"By keeping themselves stationary","value":"B"},{"text":"By revolving around the nucleus","value":"C"},{"text":"Due to their wave like nature","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266986,"question":"What does keep the particles present in the nucleus intact.","choices":[{"text":"Particles are held together by dipolar force","value":"A"},{"text":"Particles are held together by wee nuclear force","value":"B"},{"text":"Particles are held together by strong nuclear force","value":"C"},{"text":"Particles are held together by electrostatic force","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266985,"question":"How is radio carbon dating useful for archeolgists.","choices":[{"text":"It helps detemine whether the matter is radioactie or not","value":"A"},{"text":"It helps determine the age of organic matter","value":"B"},{"text":"It helps determine the composition of matter","value":"C"},{"text":"It helps deterime the usefulness of matter","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266984,"question":"What will be the relative atomic mass of nitrogen given the abundance of its two isotopes, <sup>14</sup> N and <sup>15 </sup>N are 99.64 and 0.35","choices":[{"text":"14.0210","value":"A"},{"text":"14.2100","value":"B"},{"text":"14.0021","value":"C"},{"text":"14.1200","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266983,"question":"In which isotope of oxygen there are the equal numbr of protons electons and neutorns.","choices":[{"text":"O<sup>16</sup>","value":"A"},{"text":"<sup>17</sup>O","value":"B"},{"text":"<sup>18</sup>O","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":266982,"question":"Which particle is present in differente number in the isotopes.","choices":[{"text":"Proton","value":"A"},{"text":"Electron","value":"B"},{"text":"Neutron","value":"C"},{"text":"Both neutron and electron","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266981,"question":"Why has isotopes not been shown int he periodic table.","choices":[{"text":"Isotopes do not show periodic behavior","value":"A"},{"text":"Periodic tble cannot accomodate a large number of isotopes of different elements","value":"B"},{"text":"All the isotops have same atomic number so there is no need to give them separate places","value":"C"},{"text":"Someof the isotopes are unstble and they give rise to different elements.","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266980,"question":"What information was obtained fom discharge tube expriments?","choices":[{"text":"Electrons and protons were discovered","value":"A"},{"text":"Structur eof atom was discovered","value":"B"},{"text":"Neutrons and protons were discovered","value":"C"},{"text":"Presence of nucleus in an atom was discovered","value":"D"},{"value":"E"}],"correctAnswer":1}]