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Gaokao Chemistry Practice Question

1. (6 分) 化学无处不在, 与化学有关的说法不正确的是()

  1. A.侯氏制碱法的工艺过程中应用了物质溶解度的差异
  2. B.可用蘸浓盐酸的棉棒检验输送氨气的管道是否漏气
  3. C.碘是人体必需微量元素, 所以要多吃富含高碘酸的食物
  4. D.黑火药由硫磺、硝石、木炭三种物质按一定比例混合制成

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