[{"id":119530,"question":"The quantum number which describes the shape of the orbital is","choices":[{"text":"Principle quantum number","value":"A"},{"text":"Spin quantum number","value":"B"},{"text":"Azimathal quantum number","value":"C"},{"text":"Magnetic quantum number","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119527,"question":"Balmer's series is in ______ region","choices":[{"text":"Visible","value":"A"},{"text":"U V","value":"B"},{"text":"I. R.","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119526,"question":"The range of visible spectrum is","choices":[{"text":"300 - 600 nm","value":"A"},{"text":"600 - 900 nm","value":"B"},{"text":"400 - 750 nm","value":"C"},{"text":"100 - 300 nm","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119524,"question":"n + l value for 4f will","choices":[{"text":"2","value":"A"},{"text":"5","value":"B"},{"text":"7","value":"C"},{"text":"9","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119523,"question":"Neutrons was discovered by","choices":[{"text":"Mosely","value":"A"},{"text":"Milliken","value":"B"},{"text":"Chadwick","value":"C"},{"text":"Ruherford","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119522,"question":"Charge to mass ratio (e/m) of the electron is determined by","choices":[{"text":"R. A. Millikan","value":"A"},{"text":"J. J. Thompson","value":"B"},{"text":"G. J, Stoney","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119521,"question":"Cathode rays emitted from cathode are","choices":[{"text":"Canal rays","value":"A"},{"text":"Protons","value":"B"},{"text":"Electrons","value":"C"},{"text":"Positrons","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119519,"question":"The value of R (Rydberg's constant) is _______ m-1","choices":[{"text":"1.0974 x 107","value":"A"},{"text":"1.0842 x 107","value":"B"},{"text":"1.082 x 10-7","value":"C"},{"text":"Both a and b","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119516,"question":"Which of the atoms has 1s<sup>2</sup>, 2s<sup>2</sup>, 2p<sub>x</sub><sup>2</sup>2p<sup>1</sup><sub>y</sub>2p<sup>1</sup><sub>z</sub>configuration","choices":[{"text":"Nitrogen","value":"A"},{"text":"Carbon","value":"B"},{"text":"Fluorine","value":"C"},{"text":"Oxygen","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":119507,"question":"Electrons in degenerate orbitals are placed in separate orbitals with same spin according to","choices":[{"text":"Hund's rule","value":"A"},{"text":"Pauli exclusion principle","value":"B"},{"text":"Aufbau principle","value":"C"},{"text":"Mosley's law","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119506,"question":"An electron with n = 3 , l = 2 will be in the sub-shell","choices":[{"text":"3p","value":"A"},{"text":"3d","value":"B"},{"text":"3f","value":"C"},{"text":"3s","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119505,"question":"If the value of azimuthal quantum number is 3, then values of m the magnetic quantum no. will be","choices":[{"text":"0, 1, 2, 3","value":"A"},{"text":"+3, +2, +1, -1, -2, -3","value":"B"},{"text":"0, -1, -2 ,-3","value":"C"},{"text":"-3, 0, +3","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119504,"question":"The order of frequency of the following radiations unltraviolet, visible, infrared and microwave is","choices":[{"text":"Microwave &gt; infrared &gt; visible &gt; ultraviolet","value":"A"},{"text":"Visible &gt; ultraviolet &gt; microwave &gt; infrared","value":"B"},{"text":"Ultraviolet &gt; visible &gt; infrared &gt; microwave","value":"C"},{"text":"Infrared &gt; microwave &gt; ultraviolet &gt; visible","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119502,"question":"Which have better penetrating power","choices":[{"text":"Alpha rays","value":"A"},{"text":"Beta rays","value":"B"},{"text":"Gamma rays","value":"C"},{"text":"X-rays","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119501,"question":"The radiations with wavelength shorter than violet light are called","choices":[{"text":"Ultraviolet","value":"A"},{"text":"Infrared","value":"B"},{"text":"Microwave","value":"C"},{"text":"Radio frequency","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119499,"question":"Spectrum of white light is continuous becuase","choices":[{"text":"Colors separated by dark spaces","value":"A"},{"text":"There are no boundary lines between the colours","value":"B"},{"text":"The radiations are in infrared region","value":"C"},{"text":"The radiatins fall in ultraviolet region","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110534,"question":"The energy of ionization of an atom is the energy difference between orbital","choices":[{"text":"","img":"110534_636316542691293047-RA1.jpg","value":"A"},{"text":"","img":"110534_636316542691293047-RA2.jpg","value":"B"},{"text":"","img":"110534_636316542691293047-RA3.jpg","value":"C"},{"text":"","img":"110534_636316542691293047-RA4.jpg","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110530,"question":"Four d-orbitals contain four lobes while fifth contains only two lobes the orbital is","choices":[{"text":"dxy","value":"A"},{"text":"dxz","value":"B"},{"text":"dz<sup>2</sup>","value":"C"},{"text":"dx<sup>2</sup>- y<sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110529,"question":"When 6s orbital is complete then next electron goes to","choices":[{"text":"6p","value":"A"},{"text":"6d","value":"B"},{"text":"5d","value":"C"},{"text":"4f","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110528,"question":"The arrangement of subshells in the ascending order of their energy on complete filing of 4f subshell the entering electrons goes to","choices":[{"text":"5s","value":"A"},{"text":"5p","value":"B"},{"text":"5d","value":"C"},{"text":"5f","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110526,"question":"Electrons arranged in orbitals according to the increasing order of their n + l values, this rule is named as","choices":[{"text":"Hund's rule","value":"A"},{"text":"Heisenberg's principle","value":"B"},{"text":"Paulit exclusion principle","value":"C"},{"text":"Auf bau principle","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110525,"question":"The degenerate orbitals p-sub shell are","choices":[{"text":"2","value":"A"},{"text":"3","value":"B"},{"text":"5","value":"C"},{"text":"7","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110524,"question":"An orbital can accommodate maximum two electrons with opposite spins according to","choices":[{"text":"Heisenberg's principle","value":"A"},{"text":"Aufbau principle","value":"B"},{"text":"Hund's srule","value":"C"},{"text":"Pauli exclusion principle","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110522,"question":"Their e/m, ratio resembles with that of electrons","choices":[{"text":"Alpha rays","value":"A"},{"text":"Beta rays","value":"B"},{"text":"Gamma rays","value":"C"},{"text":"X-rays","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110521,"question":"The orbitals having n + l = 5 are","choices":[{"text":"2p, 3d,3s","value":"A"},{"text":"3p, 3d, 5s","value":"B"},{"text":"3s, 4p, 4d","value":"C"},{"text":"5s, 4p, 3d","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110519,"question":"For a 3P subshell the set of principle and azimuthal quantum number is","choices":[{"text":"n = 1 , l = 2","value":"A"},{"text":"n = 3, l = 0","value":"B"},{"text":"n = 3, l = 1","value":"C"},{"text":"n = 1, l = 3","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110517,"question":"The total values of magnetic quantum number of subshell are five, the subshell is","choices":[{"text":"S-subshell","value":"A"},{"text":"P-subshell","value":"B"},{"text":"D-subshell","value":"C"},{"text":"F-subshell","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110514,"question":"The size of electronic shell is described by","choices":[{"text":"Azimuthal Q. no","value":"A"},{"text":"Magnetic Q.No","value":"B"},{"text":"Spin Q. No","value":"C"},{"text":"Principle Q. No","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110513,"question":"Schrodinger wave equation describes electron completely because","choices":[{"text":"It describes a set of four quantum number","value":"A"},{"text":"It describes the particle nature of electron","value":"B"},{"text":"It measures wavelength of electron","value":"C"},{"text":"It describes electron moving in specific orbit","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110511,"question":"The value of Plank's constant 'h' is","choices":[{"text":"6.625 x 10<sup>-34</sup>","value":"A"},{"text":"6.625 x 10<sup>-34</sup>J sec","value":"B"},{"text":"6.625 x 10<sup>-34</sup>KJ","value":"C"},{"text":"6.625 x 10<sup>-34</sup>K Cal","value":"D"},{"value":"E"}],"correctAnswer":2}]