[{"id":226194,"question":"In which compound, the oxidation state of boron in not +3","choices":[{"text":"H2BO3","value":"A"},{"text":"Ca2B2O11","value":"B"},{"text":"Na2B4O7","value":"C"},{"text":"Mg3B2","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":226193,"question":"Ethyl alcohol on reacting with orthoboric acid form","choices":[{"text":"Ethyl borate","value":"A"},{"text":"Boric acid","value":"B"},{"text":"Boron acetate","value":"C"},{"text":"Borax","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226192,"question":"Boric acid is used as eye wash due to its","choices":[{"text":"Weakly acidic property","value":"A"},{"text":"Antiseptic nature","value":"B"},{"text":"Antibiotic nature","value":"C"},{"text":"Weakly basic properties","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226191,"question":"Boron usually exist in nature as","choices":[{"text":"Borides","value":"A"},{"text":"Oxborates","value":"B"},{"text":"Free element","value":"C"},{"text":"It is a artificial element","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226190,"question":"Third abundant element on earth crust is.","choices":[{"text":"Boron","value":"A"},{"text":"Oxygen","value":"B"},{"text":"Aluminium","value":"C"},{"text":"Silicon","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226189,"question":"Which one of the following elements exhibits s-inert pair effect.","choices":[{"text":"B","value":"A"},{"text":"Al","value":"B"},{"text":"Pb","value":"C"},{"text":"Sc","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226188,"question":"Which one of the followings is not ore of aluminium","choices":[{"text":"Coruridum","value":"A"},{"text":"Bauxite","value":"B"},{"text":"Colemanite","value":"C"},{"text":"Kaolin","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226187,"question":"Corundum is","choices":[{"text":"Al2O3","value":"A"},{"text":"Na2AlF6","value":"B"},{"text":"Quartz","value":"C"},{"text":"Calcium","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":226186,"question":"Tincal is a mineral of.","choices":[{"text":"Al","value":"A"},{"text":"B","value":"B"},{"text":"Si","value":"C"},{"text":"C","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226185,"question":"Which of the following elements is not present abundantly in earth's crust.","choices":[{"text":"Silicon","value":"A"},{"text":"Aluminium","value":"B"},{"text":"Sodium","value":"C"},{"text":"Oxygen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226184,"question":"Boric acid can not be used.","choices":[{"text":"As antiseptic in medicine","value":"A"},{"text":"For washing eyes","value":"B"},{"text":"In soda bottle","value":"C"},{"text":"For enamels and glazes","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226183,"question":"Which element among the following belongs to Group IV A of the Periodic table.","choices":[{"text":"Barium","value":"A"},{"text":"Iodine","value":"B"},{"text":"Lead","value":"C"},{"text":"Oxygen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226182,"question":"Which element forms on ion wiht charge 3+","choices":[{"text":"Beryllium","value":"A"},{"text":"Aluminium","value":"B"},{"text":"Carbon","value":"C"},{"text":"silicon","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":226181,"question":"Aluminium oxide is.","choices":[{"text":"Acidic oxide","value":"A"},{"text":"Basic oxide","value":"B"},{"text":"Amphoteric oxide","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":226180,"question":"Which metal is used in the thermite process because of its activity.","choices":[{"text":"Iron","value":"A"},{"text":"Copper","value":"B"},{"text":"Aluminium","value":"C"},{"text":"Zinc","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":135651,"question":"Which of the following elements is not present abundantly in earth's crust","choices":[{"text":"Silicon","value":"A"},{"text":"Aluminium","value":"B"},{"text":"Sodium","value":"C"},{"text":"Oxygen","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":135648,"question":"Which electronic configuration corresponds to an element of group III-A of the Periodic Table","choices":[{"text":"1s<sup>2</sup>,2s<sup>2</sup>,2p<sup>6</sup>,3s<sup>2</sup>,3p<sup>1</sup>","value":"A"},{"text":"1s<sup>2</sup>,2s<sup>2</sup>,2p<sup>6</sup>,3s<sup>2</sup>,3p<sup>6</sup>,4s<sup>6</sup>","value":"B"},{"text":"1s<sup>2</sup>,2s<sup>2</sup>,2p<sup>6</sup>","value":"C"},{"text":"1s<sup>2</sup>,2s<sup>2</sup>,3s<sup>2</sup>,3p<sup>3</sup>","value":"D"},{"value":"E"}],"correctAnswer":1}]