[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fwG-y-VCjtbXbj6jla7mOwqZOiy14MvFWBwxrpknoTNY":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-11-22 19:26:39",239465393,[8,9,10,11],"Cl⁻","Fe²⁺","Br⁻","SO₄²⁻",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","4553963dbcc84c309da5f68658ce6d41","常见阴阳离子检验安全准入课前测验","某溶液能使淀粉-KI试纸变蓝,则该溶液中不可能大量存在的离子是( )",[21,32,39,48,57,65,73,81,90,99],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],239465384,[25,26,27,28],"硝酸银溶液","氯化钡溶液","稀硫酸","氢氧化钠溶液","下列哪种试剂常用于检验溶液中是否存在Cl⁻","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":38,"source":30,"type":31},[],239465385,[25,26,36,37],"硝酸钡溶液和稀硝酸","碳酸钠溶液","鉴别Cl⁻和SO₄²⁻时,可以选用的共同试剂是( )",{"answer":40,"createTime":5,"id":41,"options":42,"question":47,"source":30,"type":31},[],239465386,[43,44,45,46],"一定含有SO₄²⁻","可能含有SO₄²⁻或Ag⁺","一定含有Ag⁺","一定含有CO₃²⁻","某溶液中加入氯化钡溶液,生成白色沉淀,再加入稀盐酸,沉淀不溶解.则该溶液中( )",{"answer":49,"createTime":5,"id":50,"options":51,"question":56,"source":30,"type":31},[],239465387,[52,53,54,55],"加入稀盐酸,产生使湿润pH试纸变红的气体","加入浓氢氧化钠溶液,加热,产生使湿润红色石蕊试纸变蓝的气体","加入硝酸银溶液,产生白色沉淀","加入紫色石蕊试液,溶液变红","检验铵根离子(NH₄⁺)的正确方法是( )",{"answer":58,"createTime":5,"id":59,"options":60,"question":64,"source":30,"type":31},[],239465388,[61,62,27,63],"稀盐酸","KSCN溶液","Na₂CO₃溶液","能将Fe²⁺和Fe³⁺区分开的试剂是( )",{"answer":66,"createTime":5,"id":67,"options":68,"question":72,"source":30,"type":31},[],239465389,[9,69,70,71],"Fe³⁺","Cu²⁺","Ag⁺","向某溶液中滴加KSCN溶液,溶液无明显变化,再滴入少量新制氯水,溶液立即变为血红色.则该溶液中一定含有( )",{"answer":74,"createTime":5,"id":75,"options":76,"question":80,"source":30,"type":31},[],239465390,[77,78,79,70],"Mg²⁺","Al³⁺","NH₄⁺","下列离子中,能用NaOH溶液直接鉴别并观察到明显现象的是( )",{"answer":82,"createTime":5,"id":83,"options":84,"question":89,"source":30,"type":31},[],239465391,[85,86,87,88],"Na⁺, Cu²⁺, Cl⁻","K⁺, Ag⁺, NO₃⁻","Ba²⁺, Al³⁺, SO₄²⁻","Na⁺, CO₃²⁻, SO₄²⁻","某碱性透明溶液中,可能大量存在的离子组是( )",{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":30,"type":31},[],239465392,[94,95,96,97],"先加BaCl₂溶液,有白色沉淀,再加稀盐酸,沉淀不溶解","先加稀盐酸,无现象,再加BaCl₂溶液,有白色沉淀","先加稀硝酸,无现象,再加Ba(NO₃)₂溶液,有白色沉淀","先加Ba(NO₃)₂溶液,有白色沉淀,再加稀硝酸,沉淀不溶解","检验溶液中是否含有SO₄²⁻,下列操作中最合理的是( )",{"answer":100,"createTime":5,"id":6,"options":101,"question":19,"source":30,"type":31},[],[8,9,10,11]]