[{"id":122118,"question":"When potassium metal is exposed to violet light","choices":[{"text":"Ejection of electrons takes place","value":"A"},{"text":"Ejection of some potassium atoms occurs","value":"B"},{"text":"There is no effect","value":"C"},{"text":"The absorption of electrons takes place","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122117,"question":"Find the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25","choices":[{"text":"3.0 BM","value":"A"},{"text":"4.9 BM","value":"B"},{"text":"5.9 BM","value":"C"},{"text":"6.9 BM","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122116,"question":"What is the packet of energy called?","choices":[{"text":"Electron","value":"A"},{"text":"Photon","value":"B"},{"text":"Positron","value":"C"},{"text":"Proton","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122114,"question":"Effective magnetic moment of Sc<sup>3+</sup>ion is","choices":[{"text":"1.73","value":"A"},{"text":"0","value":"B"},{"text":"5.92","value":"C"},{"text":"2.83","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122113,"question":"Consider the ground state of Cr atom (Z=24). The numbers of electrons with the azimuthal quantum numbers l = 1 and l = 2 are respectively","choices":[{"text":"12 and 4","value":"A"},{"text":"16 and 5","value":"B"},{"text":"16 and 4","value":"C"},{"text":"12 and 5","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122112,"question":"The correct set of quantum numbers (n,l and m) respectively of the unpaired electron of chlorine atom is","choices":[{"text":"2,1,0","value":"A"},{"text":"2,1,1","value":"B"},{"text":"3,1,1","value":"C"},{"text":"3,2,1","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122105,"question":"For principle quantum number n=4, the total number of orbitals having l = 3 is","choices":[{"text":"3","value":"A"},{"text":"7","value":"B"},{"text":"5","value":"C"},{"text":"9","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122104,"question":"The atomic number of an element is 35 what is the total number of electrons present in all the p-orbitals of the ground state atom of that element?","choices":[{"text":"6","value":"A"},{"text":"11","value":"B"},{"text":"17","value":"C"},{"text":"23","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122102,"question":"The orbital in Rutherford's model is","choices":[{"text":"Spiral","value":"A"},{"text":"Circular","value":"B"},{"text":"Both","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122101,"question":"The number of de-electrons retained in Fe<sup>2+ </sup>(At.No. of Fe = 26) ions is","choices":[{"text":"3","value":"A"},{"text":"4","value":"B"},{"text":"5","value":"C"},{"text":"6","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122100,"question":"The configuration 1s<sup>2</sup>2s<sup>2</sup>2p<sup>5</sup>3s<sup>1</sup>shows","choices":[{"text":"Excited state of O<sub>2</sub>","value":"A"},{"text":"Excited state of neon","value":"B"},{"text":"Excited state of fluorine","value":"C"},{"text":"Ground state of fluorine atom","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122099,"question":"The energy of the first electron is helium will be","choices":[{"text":"-13.6 eV","value":"A"},{"text":"-54.4 eV","value":"B"},{"text":"-5.44 eV","value":"C"},{"text":"zero","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122098,"question":"Which of the following is not isoelectronic?","choices":[{"text":"Na<sup>+</sup>","value":"A"},{"text":"Mg<sup>2+</sup>","value":"B"},{"text":"O<sup>2-</sup>","value":"C"},{"text":"Cl<sup>-</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122097,"question":"The spectrum of He is expected to be similar to that of","choices":[{"text":"H","value":"A"},{"text":"Na","value":"B"},{"text":"He<sup>+</sup>","value":"C"},{"text":"Li<sup>+</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":122095,"question":"Which of the following element's outermost orbits last electron has magnetic quantum number m=0?","choices":[{"text":"Na","value":"A"},{"text":"O","value":"B"},{"text":"Cl","value":"C"},{"text":"N","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122092,"question":"Which is not true with respect to cathode rays?","choices":[{"text":"A stream of electrons","value":"A"},{"text":"Charged particles","value":"B"},{"text":"Move with speed as that of light","value":"C"},{"text":"Can be deflected by magnetic fields","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122090,"question":"In the ground state, an element has 13 electrons in its M shell. The element is","choices":[{"text":"Copper","value":"A"},{"text":"Chromium","value":"B"},{"text":"Nickel","value":"C"},{"text":"Iron","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122088,"question":"Rutherford's atomic model suggests the existence of","choices":[{"text":"Atom","value":"A"},{"text":"Nucleus","value":"B"},{"text":"alpha particle","value":"C"},{"text":"Measons","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122087,"question":"The third line of the Balmer series, in the emission spectrum of the hydrogen atom,is due to the transition from the","choices":[{"text":"Fourth Bohr orbit to the first Bohr orbit","value":"A"},{"text":"Fifth Bohr orbit to the second Bohr orbit","value":"B"},{"text":"Sixth Bohr orbit to the third Bohr orbit","value":"C"},{"text":"Seventh Bohr orbit to the third Bohr orbit","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122086,"question":"In which of the following pairs, the numbers of electrons in the outermost shell are different?","choices":[{"text":"As,Sb","value":"A"},{"text":"Ge,Sn","value":"B"},{"text":"In,pt","value":"C"},{"text":"Se,Te","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122084,"question":"The total number of orbitals possible for the quantum number n is","choices":[{"text":"n","value":"A"},{"text":"n<sup>2</sup>","value":"B"},{"text":"2n","value":"C"},{"text":"2n<sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122083,"question":"A 4f orbital has","choices":[{"text":"one node","value":"A"},{"text":"two node","value":"B"},{"text":"three node","value":"C"},{"text":"four nodes","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122081,"question":"1 erg of energy corresponds to","choices":[{"text":"6.02 x 10<sup>23</sup>J/mol","value":"A"},{"text":"6.02 x 10<sup>16</sup>J/mol","value":"B"},{"text":"1 erg/mol","value":"C"},{"text":"10<sup>-7</sup>J/mol","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122077,"question":"The de-Brogile wavelength of a particle with mass 1g and velocity 100 m/s is","choices":[{"text":"6.63 x 10<sup>-33</sup>m","value":"A"},{"text":"6.63 x 10<sup>-34</sup>m","value":"B"},{"text":"6.63 x 10<sup>-35</sup>m","value":"C"},{"text":"6.65 x 10<sup>-35</sup>m","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":122075,"question":"Which of the following has more unpaired d-electrons?","choices":[{"text":"Zn<sup>+</sup>","value":"A"},{"text":"Fe<sup>2+</sup>","value":"B"},{"text":"Ni<sup>3+</sup>","value":"C"},{"text":"Cu<sup>+</sup>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122074,"question":"Heaviest particle is","choices":[{"text":"Meson","value":"A"},{"text":"Neutron","value":"B"},{"text":"Proton","value":"C"},{"text":"Electron","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122073,"question":"The four quantum numbers of the valency electron of potassium are","choices":[{"text":"4,1,1,1/2","value":"A"},{"text":"4,0,0,1/2","value":"B"},{"text":"4,1,0,1/2","value":"C"},{"text":"4,4,0,1/2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":122072,"question":"An electron has principal quantum number 3. The number of its 1 subshell and 2 orbitals would be respectively","choices":[{"text":"3 and 5","value":"A"},{"text":"3 and 7","value":"B"},{"text":"3 and 9","value":"C"},{"text":"2 and 5","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122071,"question":"If the radius of first Bohr orbit be a<sub>o</sub>, then the radius of third Bohr orbit would be","choices":[{"text":"3 x a<sub>o</sub>","value":"A"},{"text":"6 x a<sub>o</sub>","value":"B"},{"text":"9 x a<sub>o</sub>","value":"C"},{"text":"1/2 x a<sub>o</sub>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":122070,"question":"The quantum number which determines the shape of the orbital is","choices":[{"text":"principal","value":"A"},{"text":"azimuthal","value":"B"},{"text":"magnetic","value":"C"},{"text":"spin","value":"D"},{"value":"E"}],"correctAnswer":2}]