[{"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},{"id":266979,"question":"How many electrons can be accommodated at the msot in the third shell of the elements.","choices":[{"text":"8","value":"A"},{"text":"12","value":"B"},{"text":"10","value":"C"},{"text":"18","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":266978,"question":"Which one of the suspension.","choices":[{"text":"Chalk in water","value":"A"},{"text":"Tootpast","value":"B"},{"text":"Ink","value":"C"},{"text":"Blood","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":266977,"question":"Which one of the example of colloid.","choices":[{"text":"Paints","value":"A"},{"text":"Milk of magnesia","value":"B"},{"text":"Jelly","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":266976,"question":"The solubility of which salt decreases with the increase of temperture.","choices":[{"text":"KNO3","value":"A"},{"text":"Li2SO4","value":"B"},{"text":"KCl","value":"C"},{"text":"NaNO3","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":266975,"question":"Solubility of whcih salt increases with the increase of temperture.","choices":[{"text":"KNO3","value":"A"},{"text":"KCL","value":"B"},{"text":"NaNO3","value":"C"},{"text":"All of These","value":"D"},{"value":"E"}],"correctAnswer":4}]