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{“questions”:{“9duf2”:{“id”:”9duf2″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2001 \r\n\r\n \r\nIn genere un composto inorganico a carattere riducente possiede:\r\n“,”desc”:””,”hint”:””,”answers”:{“3q5dx”:{“id”:”3q5dx”,”image”:””,”imageId”:””,”title”:”A) carattere acido”},”zlkse”:{“id”:”zlkse”,”image”:””,”imageId”:””,”title”:”B) uno o pi\u00f9 elementi a numero di ossidazione piuttosto elevato”},”k8pud”:{“id”:”k8pud”,”image”:””,”imageId”:””,”title”:”C) numerosi atomi di ossigeno”},”zzuen”:{“id”:”zzuen”,”image”:””,”imageId”:””,”title”:”D) carattere …

{“questions”:{“de2aj”:{“id”:”de2aj”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1997\r\n\r\n \r\nPer ottenere un metallo allo stato di elemento da un minerale che lo contiene sotto forma di ossido, quale tra le seguenti trasformazioni chimiche si deve effettuare?\r\n“,”desc”:””,”hint”:””,”answers”:{“7qwzh”:{“id”:”7qwzh”,”image”:””,”imageId”:””,”title”:”A) …

{“questions”:{“sl9h2”:{“id”:”sl9h2″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2001 \r\n\r\n \r\nLa reazione Cu1+ \u2013 1 e\u2013 \u2192 Cu2+ \u00e8 una:\r\n“,”desc”:””,”hint”:””,”answers”:{“3no0q”:{“id”:”3no0q”,”image”:””,”imageId”:””,”title”:”A) deidrogenazione”},”fin9l”:{“id”:”fin9l”,”image”:””,”imageId”:””,”title”:”B) riduzione”},”8ojke”:{“id”:”8ojke”,”image”:””,”imageId”:””,”title”:”C) dismutazione”},”agn8s”:{“id”:”agn8s”,”image”:””,”imageId”:””,”title”:”D) ossidazione”,”isCorrect”:”1″},”ymztm”:{“id”:”ymztm”,”image”:””,”imageId”:””,”title”:”E) condensazione”}}}},”results”:{“h172p”:{“id”:”h172p”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Nella reazione indicata lo ione rameoso Cu1+\u00a0perde un elettrone diventando lo …

{“questions”:{“1c7ep”:{“id”:”1c7ep”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2000 \r\n\r\n \r\nIn genere un composto inorganico a carattere riducente contiene:\r\n“,”desc”:””,”hint”:””,”answers”:{“w044j”:{“id”:”w044j”,”image”:””,”imageId”:””,”title”:”A) numerosi atomi di ossigeno”},”xb5bj”:{“id”:”xb5bj”,”image”:””,”imageId”:””,”title”:”B) uno o pi\u00f9 elementi a numero di ossidazione piuttosto elevato”},”drynj”:{“id”:”drynj”,”image”:””,”imageId”:””,”title”:”C) uno o pi\u00f9 …

{“questions”:{“xsbbu”:{“id”:”xsbbu”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1998 \r\n\r\n \r\nNella reazione:Zn + FeCl2 \u279d ZnCl2 + Felo ione che si riduce \u00e8:\r\n“,”desc”:””,”hint”:””,”answers”:{“j93cb”:{“id”:”j93cb”,”image”:””,”imageId”:””,”title”:”A) Zn++“},”q5ue0”:{“id”:”q5ue0″,”image”:””,”imageId”:””,”title”:”B) Fe++“,”isCorrect”:”1″},”f62rr”:{“id”:”f62rr”,”image”:””,”imageId”:””,”title”:”C) Cl–“},”9km2m”:{“id”:”9km2m”,”image”:””,”imageId”:””,”title”:”D) Fe+++“},”v5cgr”:{“id”:”v5cgr”,”image”:””,”imageId”:””,”title”:”E) nessuno, si ha solo ossidazione”}}}},”results”:{“a8uxk”:{“id”:”a8uxk”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Scriviamo sopra i singoli …

{“questions”:{“zflf9”:{“id”:”zflf9″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1997 \r\n\r\n \r\nLa reazione C + O2 = CO2 \u00e8 una reazione:\r\n“,”desc”:””,”hint”:””,”answers”:{“hfom6”:{“id”:”hfom6″,”image”:””,”imageId”:””,”title”:”A) di ossidazione”},”uswas”:{“id”:”uswas”,”image”:””,”imageId”:””,”title”:”B) di ossidoriduzione”,”isCorrect”:”1″},”vbqjy”:{“id”:”vbqjy”,”image”:””,”imageId”:””,”title”:”C) acido-base”},”n9l06″:{“id”:”n9l06″,”image”:””,”imageId”:””,”title”:”D) di scambio semplice”},”likhc”:{“id”:”likhc”,”image”:””,”imageId”:””,”title”:”E) di doppio scambio”}}}},”results”:{“o3suz”:{“id”:”o3suz”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” La reazione rappresenta la combustione …

{“questions”:{“axpi3”:{“id”:”axpi3″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1997\r\n\r\n Nella reazione\r\n As2O3 + 4HNO3 + H2O \u279d 2H3AsO4 + 4NO2\r\n gli elementi che subiscono una va\u00adria\u00adzio\u00adne del numero di ossidazione sono:\r\n“,”desc”:””,”hint”:””,”answers”:{“i7guo”:{“id”:”i7guo”,”image”:””,”imageId”:””,”title”:”A) O e As “},”9ljl9”:{“id”:”9ljl9″,”image”:””,”imageId”:””,”title”:”B) As …

{“questions”:{“iqhqm”:{“id”:”iqhqm”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2003\r\n\r\n \r\nLa reazione tra un ossido di un elemento poco elettronegativo e l\u2019acqua forma:\r\n“,”desc”:””,”hint”:””,”answers”:{“isjfo”:{“id”:”isjfo”,”image”:””,”imageId”:””,”title”:”A) un\u2019anidride”},”c9nz6″:{“id”:”c9nz6″,”image”:””,”imageId”:””,”title”:”B) un acido”},”abud9″:{“id”:”abud9″,”image”:””,”imageId”:””,”title”:”C) una base”,”isCorrect”:”1″},”vgsoy”:{“id”:”vgsoy”,”image”:””,”imageId”:””,”title”:”D) un idracido”},”gkhfb”:{“id”:”gkhfb”,”image”:””,”imageId”:””,”title”:”E) un idruro”}}}},”results”:{“csjfp”:{“id”:”csjfp”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Nella tavola periodica l’elettronegativit\u00e0 degli …

{“questions”:{“jg4ic”:{“id”:”jg4ic”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2017\r\n\r\n \r\nDurante le reazioni chimiche, gli atomi:\r\n“,”desc”:””,”hint”:””,”answers”:{“i4iwr”:{“id”:”i4iwr”,”image”:””,”imageId”:””,”title”:”A) subiscono variazioni del numero atomico “},”4pk9k”:{“id”:”4pk9k”,”image”:””,”imageId”:””,”title”:”B) subiscono processi che coinvolgono le particelle del nucleo”},”ip7b1″:{“id”:”ip7b1″,”image”:””,”imageId”:””,”title”:”C) possono subire variazioni del numero di elettroni …

{“questions”:{“7w8zb”:{“id”:”7w8zb”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2008\r\n\r\n \r\nLa combustione totale del glucosio C6H12O6 porta alla formazione di:\r\n“,”desc”:””,”hint”:””,”answers”:{“woqis”:{“id”:”woqis”,”image”:””,”imageId”:””,”title”:”A) 6 atomi di C e 6 molecole di H2O2“},”tm8lv”:{“id”:”tm8lv”,”image”:””,”imageId”:””,”title”:”B) 6 molecole di CO2 e 6 di H2“},”r718d”:{“id”:”r718d”,”image”:””,”imageId”:””,”title”:”C) …