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    【题目】关于木炭和红磷在氧气中燃烧的反应，说法不正确的是( )。

    A．反应条件都是点燃 B．都是化合反应

    C．都是氧化反应 D．生成物都是气体

    【答案】D

    【解析】

    试题分析：木炭在氧气中燃烧时生成无色无味的气体二氧化碳，红磷燃烧时形成浓浓的折烟（生成物是呈白色固体小颗粒的五氧化二磷）。

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