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Gaokao Chemistry Practice Question

1. (6 分)下列过程没有发生化学反应的是()

  1. A.用活性炭去除冰箱中的异味
  2. B.用热碱水清除炊具上残留的油污
  3. C.用浸泡过高锰酸钾溶液的硅藻土保鲜水果
  4. D.用含硅胶、铁粉的透气小袋与食品一起密封包装

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