[{"id":140173,"question":"The acid used in lead storage cells is","choices":[{"text":"Phosphoric acid","value":"A"},{"text":"Nitric acid","value":"B"},{"text":"Sulphuric acid","value":"C"},{"text":"Hydrochloric acid","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":140172,"question":"Which of the following fluorides does not exist?","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":140171,"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 dehydration agent.","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":140170,"question":"Red P can be obtained from 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 crystallzing","value":"C"},{"text":"Melting it and pouring the liquid into water","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":140169,"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":140168,"question":"Each of 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":140167,"question":"Which one 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":140166,"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":140165,"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":140164,"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":140163,"question":"Red lead is","choices":[{"text":"PbO","value":"A"},{"text":"Pb<sub>3</sub>O<sub>4</sub>","value":"B"},{"text":"PbO<sub>2</sub>","value":"C"},{"text":"Pb<sub>4</sub>O<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140162,"question":"Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?","choices":[{"text":"Their metallic character decreases","value":"A"},{"text":"The stability of +2 oxidation state increases","value":"B"},{"text":"Their ionization energy increases","value":"C"},{"text":"Their atomic size decreases","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":140161,"question":"White lead is","choices":[{"text":"Basic lead acetate","value":"A"},{"text":"Acidic lead carbonate","value":"B"},{"text":"Basic lead carbonate","value":"C"},{"text":"Basic lead hydroxide","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":140160,"question":"Which of the following has no tin in its composition?","choices":[{"text":"Solder","value":"A"},{"text":"Bronze","value":"B"},{"text":"Brass","value":"C"},{"text":"Tin stone","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":140159,"question":"The chemical composition of white lead is","choices":[{"text":"Na<sub>2</sub>CO<sub>3</sub>","value":"A"},{"text":"Pb<sub>3</sub>O<sub>4</sub>","value":"B"},{"text":"Pb(OH)<sub>2</sub>.2PbCO<sub>3</sub>","value":"C"},{"text":"PbO","value":"D"},{"value":"E"}],"correctAnswer":3}]