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Question 1 · Single choice · 中档
石油是一种重要能源,人类正面临着石油短缺、油价上涨的难题。下列解决能源问题 的方法不当的是
A. 鼓励个体企业加快煤炭的开采 B. 研究和开发利用太阳能 C. 建造水电站开发水利资源 D. 开发种植可再生能源
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Question 2 · Single choice · 中档
A. 氨气 B. 甲烷 C. 乙烯 D. 乙炔
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Question 3 · Free response · 中档
.将NH 3 通过灼热的CuO,发现生成一种红色的单质和一种气体单质,这种气体单质是 :
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Question 4 · Single choice · 中档
A. 氧化剂 B. 还原剂 C. 既不是氧化剂又不是还原剂 D. 既是氧化剂又是还原剂
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Question 5 · Single choice · 中档
A. 3,3—二甲基丁烷 B. 3—乙基丁烷 C. 2,2—二甲基丁烷 D. 2,3,3—三甲基丁烷
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Question 6 · Single choice · 中档
在标准状况下,相同体积的下列气体所含物质的质量最小的是
A. CH4 B. N 2 C. O 2 D. C 2H2
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Question 7 · Single choice · 中档
“绿色化学”要求在化工合成过程中,目标产物对反应物的原子利用率达到100%,下 列反应类型最符合这一要求的是( )
A. 取代反应 B. 加聚反应 C. 氧化反应 D. 消去反应
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Question 8 · Single choice · 中档
A. 酸性:H2SiO3 >H2CO3 B. 碱性Mg(OH) 2 >Al(OH)3 C. 稳定性 Si H4 >PH3 D. 原子半径N > C
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Question 9 · Single choice · 中档
A. 合金的熔沸点一般比组成它们的各成分金属要高 B. 合金的硬度可以比原金属更高,化学性质也可能和原成分金属不同 C. 非金属和金属之间也可以形成合金 D. 合金的用途比纯金属的用途更广。
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Question 11 · Single choice · 中档
A. 16x B. 32x C. x/16 D. x
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Question 12 · Single choice · 中档
下列物质的水溶液呈酸性,并且使水的电离平衡向正方向移动的是:
A. Na2CO3 B. NH 4Cl C. H 2SO4 D. NaHCO 3
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Question 13 · Single choice · 中档
在N 2+3H2 2NH 3(正反应为放热反应)的反应中,为了提高H 2 的利用率,可 以采取的措施为
A. 升温 B. 增大压强 C. 使用催化剂 D. 增大H 2 的浓度
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Question 14 · Single choice · 中档
A. 铁 B. 铝 C. 银 D. 硅
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Question 15 · Single choice · 中档
A. Fe3+、 Na +、SCN— 、SO42— B. AlO2
— 、Na+、K+、SO42— C. Ba2+ 、Na +、 SO 42— 、Cl— D. C6H5O— 、NO3
— 、H + 、Na +
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