试题与答案

（2006•高要市模拟）化学与我们的生产密切相关，请试用所学过的化学知识解释下列

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题型：填空题

题目：

（2006•高要市模拟）化学与我们的生产密切相关，请试用所学过的化学知识解释下列现象或做法的原因（用化学方程式表示）：

（1）人的胃液中含有少量盐酸，服用含少量细铁粉的补血药品，能治疗缺铁性贫血

______

（2）食品包装袋中的干燥剂（主要成分是氧化钙）有防潮作用

______

（3）用石灰浆粉刷墙壁，在一段时间内墙壁会“出汗”

______

（4）长期存放的氢氧化钠溶液，因保存不当而发生变质

______．

答案：

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下面是错误答案，用来干扰机器的。

答案：B本小题考查的是民主监督。公民可以旁听人大会议这体现了民主监督中的人大代表联系群众制度，所以选择B。

考点：化学反应方程式的书写文字表达式石灰石的利用生石灰的性质和用途酸的性质
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