[{"id":124289,"question":"How many mole of acidfied FeSO<sub>4</sub>solution can be completely oxidized by one mole of KMNO<sub>4</sub>?","choices":[{"text":"10","value":"A"},{"text":"5","value":"B"},{"text":"6","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124287,"question":"Across the lanthanide series, the basicity of the lanthanide hydroxides","choices":[{"text":"Increases","value":"A"},{"text":"Decreases","value":"B"},{"text":"First increases and then decreases","value":"C"},{"text":"First decreases and then increases","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124285,"question":"Which of the following is not an element?","choices":[{"text":"Graphite","value":"A"},{"text":"Diamond","value":"B"},{"text":"22-Carat gold","value":"C"},{"text":"Rhombic sulphur","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124283,"question":"The protection of steel by chrome plating is due to","choices":[{"text":"Cathodic protection","value":"A"},{"text":"Anodic protection","value":"B"},{"text":"Covering of steel surface","value":"C"},{"text":"Formation of alloy with iron","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124282,"question":"What is the shape of Fe(CO)<sub>5</sub>molecule?","choices":[{"text":"Tetrahedral","value":"A"},{"text":"Octahedral","value":"B"},{"text":"Trigonal bipyramidal","value":"C"},{"text":"Square pyramidal","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124281,"question":"Transition metals mostly are","choices":[{"text":"Diamagnetic","value":"A"},{"text":"Paramagnetic","value":"B"},{"text":"Neither diamagnetic nor paramagnetic","value":"C"},{"text":"Both diamagnetic and paramagnetic","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124279,"question":"The iron obtained from blast furnace is","choices":[{"text":"Pig iron","value":"A"},{"text":"Wrought ion","value":"B"},{"text":"Soft ion","value":"C"},{"text":"Steel","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124277,"question":"In the extraction of iron, slag is produced which is","choices":[{"text":"CO","value":"A"},{"text":"FeSiO<sub>3</sub>","value":"B"},{"text":"MgSiO<sub>3</sub>","value":"C"},{"text":"CaSiO<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124275,"question":"The number of unpaired electrons in Fe<sup>3+</sup>(Z = 26) are","choices":[{"text":"5","value":"A"},{"text":"6","value":"B"},{"text":"3","value":"C"},{"text":"4","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124274,"question":"The number of unpaired electrons in Mn<sup>2+</sup>is","choices":[{"text":"5","value":"A"},{"text":"4","value":"B"},{"text":"3","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124272,"question":"Which of the following metals is sometimes found in native state in nature?","choices":[{"text":"Al","value":"A"},{"text":"Cu","value":"B"},{"text":"Fe","value":"C"},{"text":"Mg","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124271,"question":"Besides Zn and Cu , German silver contains the metal","choices":[{"text":"Sn","value":"A"},{"text":"Ag","value":"B"},{"text":"Ni","value":"C"},{"text":"Mg","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124269,"question":"What is wrong about transition metals?","choices":[{"text":"Diamagnetic","value":"A"},{"text":"Paramagnetic","value":"B"},{"text":"Form complexes","value":"C"},{"text":"Shows variable oxidation state","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124268,"question":"Which of the following element is responsible for oxidation of water to O<sub>2</sub>in biological process?","choices":[{"text":"Fe","value":"A"},{"text":"Mn","value":"B"},{"text":"Cu","value":"C"},{"text":"Mo","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124266,"question":"The lanthanides contraction is responsible for the fact that","choices":[{"text":"Zr and Y have about the same radius","value":"A"},{"text":"Zr and Nb have similar oxidsation state","value":"B"},{"text":"Zr and Hf have about the same radius","value":"C"},{"text":"Zr and Zn have the same oxidation satete","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124264,"question":"The total number of inner transition elements in the periodic table is","choices":[{"text":"10","value":"A"},{"text":"14","value":"B"},{"text":"28","value":"C"},{"text":"30","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124263,"question":"The equivalent weight of KMnO<sub>4</sub>(formula weight = M) when it is used as an oxidant in neutral medium is","choices":[{"text":"M","value":"A"},{"text":"M/2","value":"B"},{"text":"M/3","value":"C"},{"text":"M/5","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124259,"question":"Which of the following is not correct about transition metals?","choices":[{"text":"Their melting and boiling points are high","value":"A"},{"text":"Their compounds are generally coloured","value":"B"},{"text":"They can form ionic or covalent compounds","value":"C"},{"text":"They do not exhibit variable valency","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124253,"question":"Stainless steel contains ion and carbon along with","choices":[{"text":"Ni and Cr","value":"A"},{"text":"Cr and Co","value":"B"},{"text":"Co and Mn","value":"C"},{"text":"Mn and Ni","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124251,"question":"Which of the following compounds gives red precipitate with AgNO<sub>3</sub>?","choices":[{"text":"Kl","value":"A"},{"text":"K<sub>2</sub>CrO<sub>4</sub>","value":"B"},{"text":"NaBr","value":"C"},{"text":"NaNO<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124245,"question":"Mercury is the only metal which is liquid at 0<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°C. this is due to its</span>","choices":[{"text":"Very high ionization energy and weak metallic bond","value":"A"},{"text":"Low ionization potential","value":"B"},{"text":"High atomic weight","value":"C"},{"text":"High vapour pressure","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":124243,"question":"Choose the correct answer of transition elements?","choices":[{"text":"Transition elements have low melting points","value":"A"},{"text":"Transition elements do not have catalytic activity","value":"B"},{"text":"Transition elements exhibit variable oxidation states","value":"C"},{"text":"Transition elements exhibit inert pair effect","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124242,"question":"Turnbull's blue is a compound called?","choices":[{"text":"Ferricyanide","value":"A"},{"text":"Ferrous ferricyanide","value":"B"},{"text":"Ferrous cyanide","value":"C"},{"text":"Ferri - Ferro cyanide","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124240,"question":"Corrosion of iron can be prevented by coating the surface with","choices":[{"text":"Zn","value":"A"},{"text":"Sn","value":"B"},{"text":"Ni","value":"C"},{"text":"Any of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124239,"question":"The total number of rare earth elements is","choices":[{"text":"8","value":"A"},{"text":"32","value":"B"},{"text":"14","value":"C"},{"text":"10","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124238,"question":"Among the lanthandes the one obtained by synthetic method is","choices":[{"text":"Lu","value":"A"},{"text":"Pm","value":"B"},{"text":"Pr","value":"C"},{"text":"Gd","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124237,"question":"Non-formation of menisus by Hg in presence of O<sub>3</sub>is due to the formation of","choices":[{"text":"Mercuric oxide","value":"A"},{"text":"Mercurous oxide","value":"B"},{"text":"Mercuric chloride","value":"C"},{"text":"Mercurous chloride","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":124235,"question":"German silver does not contain","choices":[{"text":"Cu","value":"A"},{"text":"Zn","value":"B"},{"text":"Ni","value":"C"},{"text":"Mn","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":124234,"question":"The number of unpaired electrons in ferrous ion ( Z - 26) is","choices":[{"text":"3","value":"A"},{"text":"2","value":"B"},{"text":"4","value":"C"},{"text":"5","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":124233,"question":"The compound which gives oxygen on moderate heating is","choices":[{"text":"Zinc oxide","value":"A"},{"text":"Mercuric oxide","value":"B"},{"text":"Aluminium oxide","value":"C"},{"text":"Ferric oxide","value":"D"},{"value":"E"}],"correctAnswer":2}]