中学生网络课堂本课配套习题挑战模式2/5
单选题
难度系数：
2.钓鱼岛及附近海域，蕴藏有大量石油和天然气，下列关于石油和天然气的叙述错误的是
| A: 天然气是混合物 |
| B: 石油是可再生能源 |
| C: 石油是一种化石燃料 |
| D: 天然气的主要成分是甲烷 |
一次做对，真牛！
+5奖励规则>
- 提示1：55+z5rK55bGe5LqO5YyW55+z54eD5paZ77yM5LiN6IO955+t5pe25pyf5YaF5LuO6Ieq54S255WM5b6X5Yiw6KGl5YWF
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.某气体由H2、CO2、CO、CH4中的两种组成，为确定其成分进行了下面的实验
①将气体通过澄清的石灰水，未出现浑浊现象 ；
②将气体通过灼热的氧化铜，有红色固体生成；
③将气体点燃后通入澄清的石灰水，有浑浊现象。那么对该气体成分作出的以下推断中，不合理的是
①将气体通过澄清的石灰水，未出现浑浊现象 ；
②将气体通过灼热的氧化铜，有红色固体生成；
③将气体点燃后通入澄清的石灰水，有浑浊现象。那么对该气体成分作出的以下推断中，不合理的是
| A: H2、CO |
| B: CO、CH4 |
| C: H2、CH4 |
| D: CO2、CH4 |
一次做对，真牛！
+5奖励规则>
- 提示1：6YCa6L+H5LiJ5Liq5a6e6aqM546w6LGh5Y+v55+l77yM5byA5aeL5rKh5pyJ5LqM5rCn5YyW56Kz77yM6YCa6L+H5rCn5YyW6ZOc5LmL5ZCO5pyJ5LqM5rCn5YyW56Kz55Sf5oiQ44CC
- 提示2：6YCa6L+H54G854Ot5rCn5YyW6ZOc55qE5pe25YCZ77yM55Sx5LqO5rip5bqm5b6I6auY77yM5aaC5p6c5pyJ55Sy54O35Lya5Y+N5bqU55Sf5oiQ5LqM5rCn5YyW56Kz5ZKM5rC044CC
- 答案：RA==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.某气体由氢气、一氧化碳、甲烷中的一种或几种组成。点燃该气体后，在火焰上方罩一冷而干燥的烧杯，烧杯内壁出现水雾；把烧杯迅速倒转过来，注入少量澄清石灰水，振荡，石灰水变浑浊。下列对气体组成的推断不正确的是
| A: 可能只有氢气 |
| B: 可能只有甲烷 |
| C: 可能是甲烷和一氧化碳的混合气体 |
| D: 可能三种气体都存在 |
一次做对，真牛！
+5奖励规则>
- 提示1：54K554eD6K+l5rCU5L2T5ZCO77yM5Zyo54Gr54Sw5LiK5pa5572p5LiA5Ya36ICM5bmy54el55qE54On5p2v77yM54On5p2v5YaF5aOB5Ye6546w5rC06Zu+77yM6K+05piO5Y+N5bqU5ZCO55Sf5oiQ5LqG5rC077yb
- 提示2：5oqK54On5p2v6L+F6YCf5YCS6L2s6L+H5p2l77yM5rOo5YWl5bCR6YeP5r6E5riF55+z54Gw5rC077yM5oyv6I2h77yM55+z54Gw5rC05Y+Y5rWR5rWK77yM6K+05piO55Sf5oiQ5LqG5LqM5rCn5YyW56Kz44CC
- 答案：QQ==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.某气体中可能有氢气、甲烷、一氧化碳中的一种或几种组成，将该气体充分燃烧后的产物依次通过足量无水硫酸铜和足量澄清石灰水，发现无水硫酸铜变蓝，澄清石灰水变浑浊，且无水硫酸铜增加的质量与澄清石灰水增加的质量之比为18:11，则该气体可能的组成情况最多有
| A: 3种 |
| B: 4种 |
| C: 5种 |
| D:6种 |
一次做对，真牛！
+5奖励规则>
- 提示1：5peg5rC056Gr6YW46ZOc5LiO5r6E5riF55+z54Gw5rC055qE5aKe6YeN5LmL5q+U5bCx5piv5Y+N5bqU5ZCO55Sf5oiQ55qE5rC05LiO5LqM5rCn5YyW56Kz55qE6LSo6YeP5LmL5q+U
- 提示2：5qC55o2u5Y+N5bqU5ZCO55Sf5oiQ55qE5rC05LiO5LqM5rCn5YyW56Kz55qE6LSo6YeP5LmL5q+U5Y+v5Lul6K6h566X5Ye65re35ZCI5rCU5L2T5Lit5rCi5YWD57Sg5ZKM56Kz5YWD57Sg55qE6LSo6YeP5LmL5q+U
- 答案：QQ==
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
