[{"id":122069,"question":"Which of the following orbitals have a dumb bell shape?","choices":[{"text":"s","value":"A"},{"text":"p","value":"B"},{"text":"d","value":"C"},{"text":"f","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122068,"question":"The total number of orbitals in a shell with principal quantum number 'n' is","choices":[{"text":"2n","value":"A"},{"text":"2n<sup>2</sup>","value":"B"},{"text":"n<sup>2</sup>","value":"C"},{"text":"n + 1","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122065,"question":"Rutherford's experiment led to the discovery of","choices":[{"text":"Nucleus","value":"A"},{"text":"Electron","value":"B"},{"text":"Proton","value":"C"},{"text":"alpha particle","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122064,"question":"Azimuthal quantum number of last electron of <sub>11</sub>Na is","choices":[{"text":"1","value":"A"},{"text":"2","value":"B"},{"text":"3","value":"C"},{"text":"0","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122060,"question":"For which of the following sets of quantum numbers and electron will have the highest energy?","choices":[{"text":"3,2,1,1/2","value":"A"},{"text":"4,2,-1,1/2","value":"B"},{"text":"4,1,0,-1/2","value":"C"},{"text":"5,0,0,1/2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122059,"question":"The radius of second Bohr's orbit is","choices":[{"text":"0.053 nm","value":"A"},{"text":"0.053/4 nm","value":"B"},{"text":"0.053 x 4 nm","value":"C"},{"text":"0.053 x 20 nm","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122058,"question":"The electron in an atom","choices":[{"text":"moves randomly around the nucleus","value":"A"},{"text":"has fixed space around the nucleus","value":"B"},{"text":"is stationary in various energy levels","value":"C"},{"text":"moves around its nucleus in definite energy levels","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122056,"question":"If the value of principal quantum number is 3. the total possible values for magnetic quantum number will be","choices":[{"text":"1","value":"A"},{"text":"4","value":"B"},{"text":"9","value":"C"},{"text":"12","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122054,"question":"The total number of possible values of magnetic quantum number for the value of l=3 is","choices":[{"text":"3","value":"A"},{"text":"1","value":"B"},{"text":"5","value":"C"},{"text":"7","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122051,"question":"The electronic configuration of an atom/ion can be defined by the following","choices":[{"text":"Aufbau principle","value":"A"},{"text":"Pauli's exclusion principle","value":"B"},{"text":"Hund's Rule","value":"C"},{"text":"All the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122048,"question":"Number of neutrons in heavy hydrogen atom is","choices":[{"text":"0","value":"A"},{"text":"1","value":"B"},{"text":"2","value":"C"},{"text":"3","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122047,"question":"The number of spherical nodes in 3p orbitals are","choices":[{"text":"One","value":"A"},{"text":"Three","value":"B"},{"text":"Non","value":"C"},{"text":"Two","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122046,"question":"The spectrum of helium is expected to be similar to that of","choices":[{"text":"H","value":"A"},{"text":"Li<sup>+</sup>","value":"B"},{"text":"Na","value":"C"},{"text":"He<sup>+</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122044,"question":"Subsidiary quantum number specifies","choices":[{"text":"size of orbital","value":"A"},{"text":"shape of orbital","value":"B"},{"text":"orientations of orbitals","value":"C"},{"text":"Nuclear stability","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122041,"question":"Sodium chloride imparts a yellow colour to the Bunsen flame. This can be interpreted due to the","choices":[{"text":"low ionization energy of sodium","value":"A"},{"text":"sublimation of metallic sodium to give yellow vapour","value":"B"},{"text":"emission of excess energy absorbed as a radiation in the visible region as a radiation in the visible region","value":"C"},{"text":"photosenitivity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122039,"question":"The number of neutrons in the element <sup>9</sup><sub>4</sub>Be is","choices":[{"text":"4","value":"A"},{"text":"5","value":"B"},{"text":"9","value":"C"},{"text":"13","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122038,"question":"The valence orbital configuration of an element with atomic number 23 is","choices":[{"text":"3d<sup>5</sup>","value":"A"},{"text":"3d<sup>3</sup>, 4s<sup>2</sup>","value":"B"},{"text":"3d<sup>3</sup>, 4s<sup>1</sup>, 4p<sup>1</sup>","value":"C"},{"text":"3d<sup>2</sup>,4s<sup>2</sup>,4p<sup>1</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122036,"question":"Which quantum number is sufficient to describe the electron is hydrogen atom?","choices":[{"text":"l","value":"A"},{"text":"n","value":"B"},{"text":"m","value":"C"},{"text":"s","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122035,"question":"When electrons revolve in stationary orbits","choices":[{"text":"There is no change in energy level","value":"A"},{"text":"They vecome stationary","value":"B"},{"text":"They are gaining kinetic energy","value":"C"},{"text":"There is increase in energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122033,"question":"The symbol of the element whose atoms have the outer most electronic configuration 2s<sup>2</sup>2p<sup>3</sup>is","choices":[{"text":"N","value":"A"},{"text":"Li","value":"B"},{"text":"P","value":"C"},{"text":"Na","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122032,"question":"The number of electrons in the M shell of the element with atomic number 24 is","choices":[{"text":"24","value":"A"},{"text":"12","value":"B"},{"text":"13","value":"C"},{"text":"8","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122031,"question":"The maximum number of electrons in a subshell for which l = 3 is","choices":[{"text":"14","value":"A"},{"text":"10","value":"B"},{"text":"8","value":"C"},{"text":"4","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122030,"question":"The ratio of the ionization energy of H and Be<sup>3+</sup>is","choices":[{"text":"1 : 1","value":"A"},{"text":"1 : 3","value":"B"},{"text":"1 : 9","value":"C"},{"text":"1 : 16","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122028,"question":"The mass of the neutron is of the order of","choices":[{"text":"10<sup>-23 </sup>kg","value":"A"},{"text":"10<sup>-24</sup>kg","value":"B"},{"text":"10<sup>-26</sup>kg","value":"C"},{"text":"10<sup>-27</sup>kg","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122027,"question":"The credit of discovering neutron goes to","choices":[{"text":"Rutherford","value":"A"},{"text":"Langmuir","value":"B"},{"text":"Chadwick","value":"C"},{"text":"Austen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122025,"question":"With increasing principle quantum number, the energy difference between adjacent energy levels in H atom","choices":[{"text":"Decreases","value":"A"},{"text":"Increases","value":"B"},{"text":"Remains constant","value":"C"},{"text":"Decreases for low value of Z and increase for higher value of Z","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119535,"question":"When the electron jumps form second third, fourth orbit to the fist orbit, the transitions are known as","choices":[{"text":"Balmer series","value":"A"},{"text":"Lyman series","value":"B"},{"text":"Pfund series","value":"C"},{"text":"Brackett series","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119534,"question":"When the electron jumps form third, fourth, fifth orbits to the second orbit, the transitions are known as","choices":[{"text":"Paschen","value":"A"},{"text":"Pfund","value":"B"},{"text":"Balmer","value":"C"},{"text":"Brackett","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119533,"question":"Photons of yellow colour are ______ energetic than violet colour","choices":[{"text":"More","value":"A"},{"text":"Less","value":"B"},{"text":"Equal","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119532,"question":"The quantum number which describe the orientation of the orbitals is","choices":[{"text":"Spin quantum number","value":"A"},{"text":"Principle quantum number","value":"B"},{"text":"Azimathal quantum number","value":"C"},{"text":"Magnetic quantum number","value":"D"},{"value":"E"}],"correctAnswer":4}]