中学生网络课堂本课配套习题挑战模式1/5
根据你的生活经验和所学的化学知识，判断下列做法能达到目的是（ ）
| A: 煤炉火上放一盆水，就能防止CO中毒 |
| B: 用无色酚酞试液检验溶液是否显酸性 |
| C: 用石灰乳与硫酸铜溶液混合配制防治植物病害的波尔多液 |
| D: 用燃烧的小木条放入集气瓶中来检验CO2是否集满 |
- 提示1：PHA+5LqG6Kej5bi46KeB56Kx55qE55So6YCU44CB5LiA5rCn5YyW56Kz55qE5q+S5oCn44CB5peg6Imy6YWa6YWe5rq25ray55qE5oCn6LSo44CB5LqM5rCn5YyW56Kz5rCU5L2T55qE6aqM5ruh5pa55rOV562JPGJyPjwvcD4=
- 答案：Qw==
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
本课配套习题挑战模式2/5
下列物质与对应用途不合理的是（ ）
| A: 熟石灰-改良酸性土壤 |
| B: 石墨-制电极 |
| C: 稀硫酸-金属除锈 |
| D: 氧气-做燃料 |
- 提示1：PHA+54mp6LSo55qE5oCn6LSo5Yaz5a6a55So6YCU77yM55So6YCU5Y+I5Y+N5pig5LqG54mp6LSo55qE5oCn6LSo77yM5qC55o2u54mp6LSo55qE5oCn6LSo57uG5b+D5YiG5p6QPGJyPjwvcD4=
- 答案：RA==
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
本课配套习题挑战模式3/5
下列有关物质的名称、俗名、化学式中，三者皆指同一物质的是（ ）
| A: 氧化钙、消石灰、CaO |
| B: 氯化氢、盐酸、HCl |
| C: 碳酸钙、熟石灰、CaCO3 |
| D: 氢氧化钠、烧碱、NaOH |
- 提示1：PHA+54af55+z54Gw44CB5raI55+z54Gw6YO95piv5rCi5rCn5YyW6ZKZ55qE5L+X56ew77yM5YyW5a2m5byP5Li6Q2HvvIhPSO+8iTxzdWI+Mjwvc3ViPu+8m0hDbOeahOawtOa6tua2suS/l+ensOS4uuebkOmFuO+8jOWboOatpEhDbOaYr+a6tua2suebkOmFuOS4reeahOa6tui0qO+8jOS4uuebkOmFuOeahOS4u+imgeaIkOWIhu+8jOS6jOiAheS4jeaYr+WQjOenjeeJqei0qDxicj48L3A+
- 答案：RA==
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
本课配套习题挑战模式4/5
将一套如图所示的密闭装置放在天平上，使天平平衡，经过一段时间后出现的情况是（ )
| A: 指针偏左，食盐溶液一定变浓，烧碱变质 |
| B: 指针偏左，食盐溶液一定变浓，烧碱潮解 |
| C: 指针偏右，食盐溶液一定变浓，烧碱潮解 |
| D: 指针偏右，食盐溶液一定饱和，烧碱潮解 |
- 提示1：PHA+5Yip55So54On56Kx55qE5ZC45rC05oCn77yM54On56Kx5ZC45rC06LSo6YeP5aKe5Yqg77yM5Lul5Y+K5aSp5bmz55qE5Z+65pys5Y6f55CG5Y2z5ZOq5Liq55uY55qE6LSo6YeP6YeN77yM5aSp5bmz55qE5oyH6ZKI5b6A6YKj6L655YGP77yMPGJyPjwvcD4=
- 答案：Qw==
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
本课配套习题挑战模式5/5
下列有关物质的性质、用途等说法正确的是（ ）
①干冰用于人工降雨②石墨可作电极③O2可用作燃料④Ca（OH）2能改良酸性土壤⑤自来水厂常用明矾做絮凝剂⑥生活中可用NaOH来除去炉具上的油污，也可治疗胃酸过多．
| A: ①②③④⑤⑥ |
| B: ①②④⑤ |
| C: ①②③④ |
| D: ①③④⑥ |
- 提示1：PHA+77yM5Li76KaB6ICD5p+l54mp6LSo55qE5oCn6LSo5ZKM55So6YCU77yM5o6M5o+h5bi46KeB54mp6LSo55qE5oCn6LSo5Y+K55So6YCUPGJyPjwvcD4=
- 答案：Qg==
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
