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{“questions”:{“1yii4”:{“id”:”1yii4″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2006\r\n\r\n \r\nIn una reazione una specie si riduce se:\r\n“,”desc”:””,”hint”:””,”answers”:{“laqu7”:{“id”:”laqu7″,”image”:””,”imageId”:””,”title”:”A) cede elettroni a un ossidante”},”d0en3″:{“id”:”d0en3″,”image”:””,”imageId”:””,”title”:”B) accetta elettroni da un riducente”,”isCorrect”:”1″},”5y9dl”:{“id”:”5y9dl”,”image”:””,”imageId”:””,”title”:”C) accetta elettroni da un ossidante”},”zu4p9″:{“id”:”zu4p9″,”image”:””,”imageId”:””,”title”:”D) cede elettroni a un …

{“questions”:{“c5213”:{“id”:”c5213″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2005\r\n\r\n \r\nNella reazione: Fe + Cu2+ \u21c4 Fe2+ + Cu:\r\n“,”desc”:””,”hint”:””,”answers”:{“zfizt”:{“id”:”zfizt”,”image”:””,”imageId”:””,”title”:”A) lo ione Cu2+ \u00e8 l’agente riducente”},”xaphl”:{“id”:”xaphl”,”image”:””,”imageId”:””,”title”:”B) il Fe \u00e8 l’agente ossidante”},”biiod”:{“id”:”biiod”,”image”:””,”imageId”:””,”title”:”C) il Fe acquista elettroni”},”y528j”:{“id”:”y528j”,”image”:””,”imageId”:””,”title”:”D) lo ione Cu2+ …

{“questions”:{“a2x9v”:{“id”:”a2x9v”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2004 \r\n\r\n \r\nNella reazione:3 Cu + 8 HNO3 \u2192 3 Cu(NO3)2 + 2 NO + 4 H2O\r\n“,”desc”:””,”hint”:””,”answers”:{“fyrie”:{“id”:”fyrie”,”image”:””,”imageId”:””,”title”:”A) Il Cu si ossida”,”isCorrect”:”1″},”b8fzn”:{“id”:”b8fzn”,”image”:””,”imageId”:””,”title”:”B) Il Cu si riduce”},”pnzgx”:{“id”:”pnzgx”,”image”:””,”imageId”:””,”title”:”C) L\u2019N si ossida”},”u5wl0″:{“id”:”u5wl0″,”image”:””,”imageId”:””,”title”:”D) …

{“questions”:{“w3ly8”:{“id”:”w3ly8″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2004 \r\n\r\n \r\nIn una reazione di ossido-riduzione, l\u2019elemento che si riduce:\r\n“,”desc”:””,”hint”:””,”answers”:{“tf4ie”:{“id”:”tf4ie”,”image”:””,”imageId”:””,”title”:”A) aumenta il proprio numero di ossidazione “},”b10x7”:{“id”:”b10x7″,”image”:””,”imageId”:””,”title”:”B) perde elettroni”},”yukwh”:{“id”:”yukwh”,”image”:””,”imageId”:””,”title”:”C) acquista elettroni”,”isCorrect”:”1″},”j8hs7″:{“id”:”j8hs7″,”image”:””,”imageId”:””,”title”:”D) acquista sempre atomi di idrogeno”},”5ecbc”:{“id”:”5ecbc”,”image”:””,”imageId”:””,”title”:”E) perde …

{“questions”:{“l4ihy”:{“id”:”l4ihy”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2004 \r\n\r\n \r\nIn una reazione di ossido\u2013riduzione:\r\n“,”desc”:””,”hint”:””,”answers”:{“848k3”:{“id”:”848k3″,”image”:””,”imageId”:””,”title”:”A) l\u2019ossidante acquista protoni, il riducente perde elettroni”},”anxvk”:{“id”:”anxvk”,”image”:””,”imageId”:””,”title”:”B) l\u2019ossidante acquista elettroni, il riducente li perde”,”isCorrect”:”1″},”sz2q4″:{“id”:”sz2q4″,”image”:””,”imageId”:””,”title”:”C) l\u2019ossidante perde elettroni, il riducente li acquista”},”r8tf2″:{“id”:”r8tf2″,”image”:””,”imageId”:””,”title”:”D) …

{“questions”:{“i9hgv”:{“id”:”i9hgv”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2003 \r\n\r\n \r\nNella reazione Zn + FeCl2 \u2192 ZnCl2 + Fe la specie chimica che si riduce \u00e8 :\r\n“,”desc”:””,”hint”:””,”answers”:{“kz78i”:{“id”:”kz78i”,”image”:””,”imageId”:””,”title”:”A) Fe”,”isCorrect”:”1″},”d72jt”:{“id”:”d72jt”,”image”:””,”imageId”:””,”title”:”B) Zn”},”1t0j6″:{“id”:”1t0j6″,”image”:””,”imageId”:””,”title”:”C) Cl”},”euybn”:{“id”:”euybn”,”image”:””,”imageId”:””,”title”:”D) nessuna, si ha solo ossidazione”},”irlt5″:{“id”:”irlt5″,”image”:””,”imageId”:””,”title”:”E) non …

{“questions”:{“nylsu”:{“id”:”nylsu”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2002 \r\n\r\n \r\nNella reazione:2 Ca3(PO4)2 + 10 C + 6 SiO2 \u2192 P4 + 6 CaSiO3 + 10 CO : \r\n“,”desc”:””,”hint”:””,”answers”:{“xw1cm”:{“id”:”xw1cm”,”image”:””,”imageId”:””,”title”:”A) il fosforo si riduce e calcio e …

{“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 …