2011-2017年上海市历年中考化学试卷真题及答案解析
2011年上海市中考试卷及答案理化试卷(满分150分,考试时间100分钟)化学部分考生注意:1.本试卷化学部分含三个大题。2.答题时,考生务必按大题要求在答题纸规定的位置上作答,在草稿纸、本试卷上答题一律无效。可能用到的相对原子质量:H—1C—12N—14O—16S—32六、选择题(共20分)下列各题均只有一个正确选项,请将正确选项的代号用2B铅笔填涂在答题纸的相应位置上,更改答案时,用橡皮擦去,重新填涂。27.空气中体积分数最大的气体是()A.氧气B.氮气C.氢气D.二氧化碳28.硅是一种重要的半导体材料。硅的元素符号是()A.HeB.PC.SiD.Al29.ClO2是一种新型、高效的消毒剂...
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