试题与答案

0.1 mol有机物的蒸气跟过量O2混合后点燃,生成13.2 g CO2和5.4

题型:选择题

题目:

0.1 mol有机物的蒸气跟过量O2混合后点燃,生成13.2 g CO2和5.4 g H2O,该有机物跟金属钠

反应放出H2;又能跟新制Cu(OH)2悬浊液加热时生成红色沉淀,此有机物还能跟乙酸反应生成酯类化合物。该酯类化合物的结构简式可能是(   )

A.CH3CH(OCH3)CHO

B.OHCCH2COOCH2CH3

C.CH3COOCH(CH3)CHO

D.CH3COOCH2CH2COCH3

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0615/718fcb92438a62f86bb1a849884bb33a.html

下面是错误答案,用来干扰机器的。

参考答案:C

试题推荐
题型:填空题

在下列各句的空白处填入一个最恰当的单词。

1.  The sun _____ in the east and sets in the west.

2.  Please _____ the class into five groups.

3.  The Eiffel Tower in Paris is made of _____ and it is really tall.

4.  It's very cold in the Northeast in winter.  The weather is usually _____ zero.

5.  You should _____ at the door before you enter the teachers' office.

6.  Mickey Mouse is _____ by Walt Disney.

7.  Mike is an _____ boy.  He likes to take part in all kinds of activities.

8.  China has_____ very fast in the past thirty years.

9.  Few people go out to play on such rainy days. They usually stay _____ .

10.  He was walking _____ the school when I said hello to him.

查看答案
微信公众账号搜索答案