烯烃分子中,键之间的夹角一般最接近于( )
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A.
90度
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B.
109.5度
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C.
180度
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D.
120度
不与苯酚的反应的是( )
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A.
Br2
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B.
NaHCO3
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C.
FeCl3
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D.
Na
在H2SO4/HgSO4催化下,下列化合物与水反应生成丙酮的是( )
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A.
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B.
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C.
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D.
醛.酮与锌汞齐(Zn-Hg)和浓盐酸一起加热,羰基即被( )。
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A.
还原为亚甲基
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B.
氧化为羧基
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C.
转变成卤代醇
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D.
还原为醇羟基
下列反应一般叫做( )
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A.
缩醛反应
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B.
羟醛缩合
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C.
康尼查罗反应
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D.
亲电加成
甲烷的空间构型是( )
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A.
无法判断
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B.
平面型
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C.
直线型
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D.
正四面体
下列化合物中,酸性最弱的选项是( )
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A.
草酸
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B.
丁二酸
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C.
己二酸
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D.
丙二酸
最容易发生亲电取代反应的化合物是( )
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A.
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B.
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C.
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D.
该化合物命名正确的是( )
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A.
7, 7-二甲基二环[2, 2]庚烷
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B.
7, 7-二甲基二环[2,2, 1]辛烷
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C.
7, 7-二甲基二环[2, 2, 1]庚烷
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D.
7, 7-二甲基双环[2, 2, 1]辛烷
下列化合物没有芳香性的是( )
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A.
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B.
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C.
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D.
吡啶在300 摄氏度下与硝酸钾和硫酸反应,发生( )
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A.
加成反应
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B.
亲核取代
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C.
消除反应
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D.
亲电取代反应
按系统命名法,二烯烃的名称为( )
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A.
(2E,4E) -3-叔丁基-2,4-己二烯
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B.
-3-叔丁基-2,4-己二烯
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C.
(2E,4Z)-3-叔丁基-2,4-己二烯
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D.
(2Z,4Z) -3-叔丁基-2,4-己二烯
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E.
(2E,4
葡萄糖水溶液的变旋光现象源于( )
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A.
葡萄糖的醛基容易被氧化
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B.
葡萄糖与水形成氢键
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C.
开链式与环氧式结构的互变异构
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D.
葡萄糖容易聚合
苯与在无水三氯化铝作用下, 主要产物为( )
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A.
甲苯
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B.
正丙基苯
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C.
乙苯
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D.
异丙基苯
羧酸的衍生物中,酰氯反应活性最大,在有机合成中常用作酯化试剂。羧酸和下列哪种试剂反应不能制得酰氯( )
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A.
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B.
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C.
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D.
将下列烃类化合物按沸点降低次序排列( )
a. 2,3-二甲基戊烷 b. 正庚烷 c. 2-甲基庚烷 d. 正戊烷 e.2-甲基己烷
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A.
c>b>e>a>d
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B.
d>a>e>b>c
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C.
b>c>d>e>a
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D.
c>b>e>d>a
列化合物羰基活性最强的是( )
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A.
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B.
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C.
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D.
下列化合物进行脱羧反应活性最大的是( )
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A.
丁酸
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B.
β-丁酮酸
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C.
α-丁酮酸
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D.
丁二酸
能使蛋白质沉淀,又不会使其变性的试剂是( )
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A.
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B.
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C.
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D.
、
果糖不和下列哪种试剂反应?( )
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A.
羟胺
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B.
溴水
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C.
醋酸酐/氯化锌
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D.
硫酸二甲酯/氢氧化钠
乙烯分子是( )分子。
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A.
直线形
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B.
正四面体形
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C.
平面三角形
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D.
平面
下列各化合物与与AgNO3(醇溶液中)反应的活性最强的是( )
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A.
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B.
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C.
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D.
下列化合物中,没有芳香性的是( )
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A.
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B.
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C.
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D.
比较下列化合物的酸性大小排列正确的是( )
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A.
1>3>2
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B.
3>2>1
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C.
2>3>1
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D.
1>2>3
下列卤代烷中属于仲卤代烷的是( )
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A.
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B.
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C.
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D.
下列哪种化合物为顺式异构体( )
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A.
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B.
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C.
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D.
与
可用哪种试剂鉴别( )
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A.
三氯化铁溶液
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B.
Br2的CCl4溶液
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C.
酸性KMnO4溶液
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D.
硝酸银的氨溶液
请看下列化合物,其中酸性最强的是( )
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A.
对硝基苯酚
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B.
苯酚
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C.
间硝基苯酚
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D.
2,4-二硝基苯酚
可以鉴别乙酰乙酸乙酯和苯酚的试剂是( )
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A.
溴
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B.
金属钠
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C.
三氯化铁
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D.
苯
下列物质中属于有同分异构体的是( )
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A.
⑤和①
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B.
①和④
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C.
③和④
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D.
②④和⑤
下列化合物按SN2反应活性最大的为( )。
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A.
正溴丙烷
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B.
正溴丁烷
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C.
2-甲基-2- 溴丙烷
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D.
仲溴丁烷
与
,它们的相互关系是( )
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A.
相同化合物
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B.
非对映异构体
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C.
对映异构体
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D.
不同化合物
下列化合物中存在对映异构体的是( )
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A.
1-戊醇
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B.
2-丁醇
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C.
2-丙醇
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D.
3-戊醇
乙烷的杂化类型是( )
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A.
无法判断
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B.
sp2杂化
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C.
sp杂化
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D.
sp3杂化
下列化合物芳香性最强的是( )
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A.
噻吩
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B.
苯
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C.
吡咯
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D.
呋喃
苯胺可以直接硝化在苯环上上硝基基团。( )
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芳香胺的碱性顺序是芳基越多碱性越强。( )
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多卤代烷都是极性分子。( )
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苯胺上连的吸电子基团越多碱性越强。( )
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苯胺与溴水反应生成三溴苯胺。( )
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只含有一个手性碳原子的分子一定具有旋光性。( )
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判断下列转化是否正确。( )
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具有手性碳原子的分子一定具有手性。( )
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环己烷在空间上只形成两种构象,分别是椅式和船式构象。( )
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Cl2和Br2在稀水溶液中或在碱性溶液中与烯烃发生加成反应,可得到β-卤代醇。( )
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烯烃与HX(HCl、HBr、HI)发生亲电加成反应,在过氧化物存在下均得到反马尔科夫尼可夫加成产物。( )
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1,3-丁二烯分子中,双键碳原子上的电子云密度比一般烯烃中双键碳原子上的电子云密度要小一些。( )
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烯烃与水在酸催化下发生亲电加成反应是制备伯醇的好方法。( )
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如果一个化合物没有对称面,它必然是手性的。( )
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乙烯分子为平面结构,其中两个双键碳原子不能围绕碳碳σ键自由旋转。( )
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