挑战习题
1/5单选题
难度:

1.为了说明影响化学反应快慢的因素,甲、乙、丙、丁4位同学分别设计了如下4个试验,你认为结论不正确的是
A 将形状、大小均相同的镁条和铝条与相同浓度的盐酸反应时,两者速率一样大
B 在相同条件下,等质量的大理石块和大理石粉末与相同浓度的盐酸反应,大理石粉末反应快
C 将浓硝酸分别放在冷暗处和强光照射下,会发现光照可以加快浓硝酸的分解
D 两只试管中分别加入相同质量的氯酸钾,其中一只试管中再加入少量二氧化锰,同时加热,产生氧气的快慢不同
提示1:
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提示2:
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提示3:
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提示4:
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正确答案:QQ==
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