[{"id":124136,"question":"Which of the following elements is most metallic?","choices":[{"text":"P","value":"A"},{"text":"As","value":"B"},{"text":"Sb","value":"C"},{"text":"Bi","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124135,"question":"Which of the following fluorides does not exists?","choices":[{"text":"NF<sub>5</sub>","value":"A"},{"text":"PF<sub>5</sub>","value":"B"},{"text":"AsF<sub>5</sub>","value":"C"},{"text":"SbF<sub>5</sub>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124134,"question":"Phosphorus pentoxide finds use as","choices":[{"text":"An oxidizing agent","value":"A"},{"text":"A reducing agent","value":"B"},{"text":"A bleaching agent","value":"C"},{"text":"A dehydrating agent","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124133,"question":"Red P can be obtained form white P by","choices":[{"text":"Heating it with a catalyst in an inert atmosphere","value":"A"},{"text":"Distilling it in an inert atmosphere","value":"B"},{"text":"Dissolving it in CS<sub>2</sub>and crysllizing","value":"C"},{"text":"Melting it ad pouring the liquid into water","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124132,"question":"White P when boiled with strong solution of caustic soda produces","choices":[{"text":"Phosphine","value":"A"},{"text":"Posh acid","value":"B"},{"text":"Phosphorous acid","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124130,"question":"Phosphine is not obtained by the reaction when","choices":[{"text":"White P is heated with NaOH","value":"A"},{"text":"Red P is heated with NaOH","value":"B"},{"text":"Ca<sub>2</sub>P<sub>2</sub>reacts with water","value":"C"},{"text":"PH<sub>4</sub>l is boiled with water","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124127,"question":"Each of the following is true of white and red phosphours except that they","choices":[{"text":"Are both soluble in CS<sub>2</sub>","value":"A"},{"text":"Can be oxidized by heating in air","value":"B"},{"text":"Consist of the same kind of atoms","value":"C"},{"text":"Can be converted into one another","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124126,"question":"Which on of the following compounds does not exist?","choices":[{"text":"NCl<sub>5</sub>","value":"A"},{"text":"AsF<sub>5</sub>","value":"B"},{"text":"SbCl<sub>5</sub>","value":"C"},{"text":"PF<sub>5</sub>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124125,"question":"BiCl<sub>3</sub>on hydrolysis forms a white precipitate of","choices":[{"text":"Bismuthio acid","value":"A"},{"text":"Bismuth oxychloride","value":"B"},{"text":"Bismuth pentachloride","value":"C"},{"text":"Bismuth hydroxide","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124122,"question":"Phosphide ion has the electronic structure similar to that of","choices":[{"text":"Nitride ion","value":"A"},{"text":"Fluoride ion","value":"B"},{"text":"Sodium ion","value":"C"},{"text":"Chloride ion","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124121,"question":"Which one of the following elements occurs free in nature?","choices":[{"text":"N","value":"A"},{"text":"P","value":"B"},{"text":"As","value":"C"},{"text":"Sb","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124118,"question":"The melting point is lowest for","choices":[{"text":"Be","value":"A"},{"text":"Mg","value":"B"},{"text":"Ca","value":"C"},{"text":"Sr","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124117,"question":"The number of elements in the 4th periods of periodic table is","choices":[{"text":"8","value":"A"},{"text":"10","value":"B"},{"text":"18","value":"C"},{"text":"32","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124116,"question":"The oxides of which of the following elements will be acidic in character","choices":[{"text":"Mg","value":"A"},{"text":"Rb","value":"B"},{"text":"Li","value":"C"},{"text":"Cl","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124115,"question":"Which of the following is an inert gas?","choices":[{"text":"H<sub>2</sub>","value":"A"},{"text":"O<sub>2</sub>","value":"B"},{"text":"N<sub>2</sub>","value":"C"},{"text":"Argon","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124113,"question":"Which of the following oxides is amopheric in character?","choices":[{"text":"CaO","value":"A"},{"text":"CO<sub>2</sub>","value":"B"},{"text":"SiO<sub>2</sub>","value":"C"},{"text":"SnO<sub>2</sub>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124112,"question":"Which of the following ion has the highest value of ionic radius?","choices":[{"text":"Li<sup>+</sup>","value":"A"},{"text":"F<sup>-</sup>","value":"B"},{"text":"O<sup>2-</sup>","value":"C"},{"text":"B<sup>3+</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124111,"question":"The elements with atomic numbers 9, 17, 35, 53, 85 an all","choices":[{"text":"Noble gases","value":"A"},{"text":"Halogens","value":"B"},{"text":"Heavy metals","value":"C"},{"text":"Light metals","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124109,"question":"How does the ionization energy of 1st group elements vary?","choices":[{"text":"Increases down the group","value":"A"},{"text":"Decreases down the group","value":"B"},{"text":"Remains unchanged","value":"C"},{"text":"Variation is not regular","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124107,"question":"Number of elements present in 5th period is","choices":[{"text":"8","value":"A"},{"text":"18","value":"B"},{"text":"32","value":"C"},{"text":"24","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124106,"question":"Two elements whose electronegativities are 1.2 and 3.0, the formed between them would be","choices":[{"text":"Ionic","value":"A"},{"text":"Covalent","value":"B"},{"text":"Coordinate","value":"C"},{"text":"Metallic","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124105,"question":"Electron affinity depends on","choices":[{"text":"Atomic size","value":"A"},{"text":"Nuclear charge","value":"B"},{"text":"Atomic number","value":"C"},{"text":"Atomic size and nuclear charge both","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124104,"question":"Which is true about the electronegativity order of the following?","choices":[{"text":"P &gt; Si","value":"A"},{"text":"C &gt; N","value":"B"},{"text":"Br &gt; Cl","value":"C"},{"text":"Sr &gt; Ca","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124103,"question":"Eka-aluminium and Eka-silicon are known as","choices":[{"text":"Gallium and Germanium","value":"A"},{"text":"Aluminium and silicon","value":"B"},{"text":"Iron and sulphur","value":"C"},{"text":"Proton and silicon","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124102,"question":"Which among the following species has the highest ionization energy?","choices":[{"text":"Ne","value":"A"},{"text":"F","value":"B"},{"text":"Li","value":"C"},{"text":"B","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124101,"question":"Which of the following does not exhibit the periodicity in properties of the elements?","choices":[{"text":"Ionisation energy","value":"A"},{"text":"N/P ratio","value":"B"},{"text":"Electronegativity","value":"C"},{"text":"Atomic radius","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124100,"question":"Which of the following sets of atomic numbers belong to that of the alkali metals?","choices":[{"text":"1,12,30,4,62","value":"A"},{"text":"37,19,3,55","value":"B"},{"text":"9,17,35,53","value":"C"},{"text":"12,20,56,88","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124099,"question":"Which of the following isoelectronic ions has the lowest ionization energy?","choices":[{"text":"K<sup>+</sup>","value":"A"},{"text":"Ca<sup>2+</sup>","value":"B"},{"text":"Cl<sup>-</sup>","value":"C"},{"text":"S<sup>2-</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124098,"question":"The atomic radius increases as we move down a group because","choices":[{"text":"Effective nuclear charge increases","value":"A"},{"text":"Atomic mass increases","value":"B"},{"text":"Additive electrons are accommodated in new electron level","value":"C"},{"text":"Atomic number increases","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":123826,"question":"Which of the following statement about fluorine is not correct?","choices":[{"text":"Electron affinity of chlorine is greater than that of fluorine","value":"A"},{"text":"Bond energy of fluorine is less than that of chlorine","value":"B"},{"text":"Fluorine cannot be prepared by electrolysis of fused metal fluorides","value":"C"},{"text":"Fluorine does not form oxoacid","value":"D"},{"value":"E"}],"correctAnswer":3}]