2011年西藏自治区中考化学真题
2011年西藏中考化学真题一、单项选择题(本题共15小题,每小题2分,共30分)1.(2分)以下叙述中只发生物理变化的是( )A.稻草燃烧B.饭菜变馊C.铁锅生锈D.冰块融化2.(2分)5月31日是“世界无烟日”.其主题是“无烟青少年”.许多国家的公共场所禁止吸烟,因为烟雾中含有能与血红蛋白结合的有毒气体是( )A.COB.N2CC.CO2D.SO23.(2分)下列物质中属于化合物的是( )A.空气B.二氧化硫C.海水D.碘盐4.(2分)拉姆同学的实验操作正确的是( )A.点燃酒精灯B.滴加液体C.稀释浓硫酸D.检验CO2满瓶5.(2分)把少量物质分别加入另一种物质中,充分搅拌,可以得...
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