0  329883  329891  329897  329901  329907  329909  329913  329919  329921  329927  329933  329937  329939  329943  329949  329951  329957  329961  329963  329967  329969  329973  329975  329977  329978  329979  329981  329982  329983  329985  329987  329991  329993  329997  329999  330003  330009  330011  330017  330021  330023  330027  330033  330039  330041  330047  330051  330053  330059  330063  330069  330077  447090 

10. 由C5H10、C3H6O2和C6H12O6组成的混合物,经测定含氧元素的质量分数为x,则此混合物中含碳元素的质量分数为····················································································(   )

A.     B.       C.        D. 无法计算

试题详情

9.具有解热镇痛及抗生素作用的药物“芬必得”主要成分的结构简式为,它属于·························································(   )

①芳香族化合物;②脂肪族化合物;③有机羧酸;④有机高分子;⑤芳香烃

A.③⑤       B. ②③       C.①③       D. ①④

试题详情

8. 已知乙烯分子呈现平面结构且碳碳双键(C=C)不能旋转,因此1,2-二氯乙烯可以形成两种不同的空间异构体。下列各物质中,能形成类似上述两种空间异构体的是········································································································(   )

A. CH2=CCl2   B. CH3CH=CH2   C. CH3CH2CH=CH2   D.CH3CH=CHCH3

试题详情

7. 下列物质中,碳的质量分数相同的是·········································································(   )

A. CH4、C2H6    B. HCHO、C6H12O6   C. CH3CH2OH、CH3COOH  D.

试题详情

6. 有机物分子中最多有多少个原子共面··········(   )

A. 12       B. 16         C. 20       D. 24

试题详情

5. 被成为“脑黄金”的DHA是一种高级脂肪酸,它的分子中含6个碳碳双键,学名为二十六碳六烯酸,它的分子组成应是··············································································(   )

A. C25H51COOH  B. C25H39COOH    C. C26H43COOH   D. C26H47COOH

试题详情

4. 某烃的结构简式为 ,分子中含有四面体结构的碳原子数为a,在同一条直线上的碳原子数最多为b,一定在同一平面内的碳原子数为c,则abc分别是·················································································································(   )

A. 4、3、5     B. 2、5、4      C. 4、3、6      D. 4、6、4

试题详情

3. 下列关于有机化学发展史的说法错误的是·······························································(   )

A. 中国科学家成功合成了结晶牛胰岛素,标志着人类合成蛋白质时代的开始

B. 德国化学家李比希提出运用同位素示踪法研究化学反应历程

C. 瑞典科学家贝采利乌斯提出有机化学的概念,使之成为化学的一个重要分支

D. 德国化学家维勒用氰酸铵合成尿素,从而打破了无机物和有机物的界限

试题详情

2. 自然界中化合物的种类最多的是···············································································(   )

A. 无机化合物   B. 有机化合物    C. 铁的化合物    D. 碳水化合物

试题详情

1. 有机化学主要研究有机化合物所发生的反应,下列化合物中不是有机物的是···· (   )

A. CO2      B. C2H6      C. HCHO      D. CH3OH

试题详情


同步练习册答案