1.综合题- (共1题)
请回答下列问题：
（1）工艺操作①、②分别为____________、____________。
（2）工业合成氨的化学方程式为：__________。
（3）写出生成“产品”的离子方程式：________。
（4）在实验室中检验合成氨厂排出的废气中是否含有氨气的方法是______________。
（5）副产品的化学式为________________。该联合生产工艺中可以循环使用的物质是__________________。
2.单选题- (共12题)
| A．放电时，把热能转化为电能 |
| B．放电时，正极发生氧化反应 |
| C．充电时，电池的负极发生还原反应 |
| D．充电时，把化学能转化为电能 |
| A．此X元素的气态氢化物的化学式为HX，在常温下很稳定 |
| B．其单质带有金属光泽，具有强氧化性，可与KI发生置换反应生成I2 |
| C．其单质的分子式为X2，易溶于有机溶剂 |
| D．AgX是一种有色的易溶于水的化合物 |
| A．向某无色溶液中加BaCl2溶液产生不溶于稀HNO3的白色沉淀，说明原溶液中一定有SO42- |
| B．向某无色溶液中加入盐酸，有无色无味的气体产生，则说明原溶液中一定有CO32- |
| C．向某溶液中滴加KSCN溶液，溶液不变红，再滴加氯水，变红，说明原溶液一定有Fe2+ |
| D．向某无色溶液中加浓NaOH溶液并加热，产生能使湿润的蓝色石蕊试纸变红的气体，则说明原溶液中一定有NH4+ |
| 金属 | Na | Mg | Al | Cu | Fe |
| 熔点/℃ | 97.5 | 649 | 660 | 1083 | 1535 |
| 沸点/℃ | 883 | 1090 | 2467 | 2567 | 2750 |
| A．铁铜合金 | B．镁铁合金 | C．钠铝合金 | D．铁铝合金 |
3.选择题- (共2题)
In American schools there is something called Homecoming Day. Many high schools and colleges with a football team have a homecoming game. This can be the most important thing of the year except graduation or commencement(颁授学位典礼) day. Students plan Homecoming Day for many weeks before the day.
Several days before Homecoming, students start to decorate the schoool. There are signs to wish luck to the team, and many other signs to welcome all the students. Many people still come to Homecoming twenty or thirty years after they leave school.
During the day people like to look for teachers that they remember from long ago. Often they see old friends and they talk together about those happy years in school.
Everyone soon comes to watch the football game. When the game is half over, the band comes onto the field and plays school songs. Another important moment is when the Homecoming Queen or King appears. All the students vote a most popular student Homecoming Queen or King. It is a great honor to be chosen.
Homecoming is a happy day, but it is not perfect unless the football team wins the game. Even if the team loses, the students still enjoy Homecoming. Some stay at the school to dance, and others go to a party. For everyone it is a day worth remembering.
In American schools there is something called Homecoming Day. Many high schools and colleges with a football team have a homecoming game. This can be the most important thing of the year except graduation or commencement(颁授学位典礼) day. Students plan Homecoming Day for many weeks before the day.
Several days before Homecoming, students start to decorate the schoool. There are signs to wish luck to the team, and many other signs to welcome all the students. Many people still come to Homecoming twenty or thirty years after they leave school.
During the day people like to look for teachers that they remember from long ago. Often they see old friends and they talk together about those happy years in school.
Everyone soon comes to watch the football game. When the game is half over, the band comes onto the field and plays school songs. Another important moment is when the Homecoming Queen or King appears. All the students vote a most popular student Homecoming Queen or King. It is a great honor to be chosen.
Homecoming is a happy day, but it is not perfect unless the football team wins the game. Even if the team loses, the students still enjoy Homecoming. Some stay at the school to dance, and others go to a party. For everyone it is a day worth remembering.
4.实验题- (共2题)
(1)甲、乙、丙三个装置中共同发生的反应的化学方程式是__________________________________。
(2)和甲装置相比，乙装置的优点是①______________________；②________________。
(3)为了进一步验证NO2和水的反应，某学生设计了丙装置。实验时先关闭活塞________，再打开活塞________，才能使NO2气体充满②试管；当气体充满②试管后，将铜丝提起与溶液脱离。欲使烧杯中的水进入②试管，应该_______________________。
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【1】题量占比
综合题:(1道)
单选题:(12道)
选择题:(2道)
实验题:(2道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：5
7星难题：0
8星难题：10
9星难题：0