2019年内蒙古呼和浩特市中考化学真题及答案
2019年内蒙古呼和浩特市中考化学真题及答案1、化学在生活和生产中起着重要的作用下列生产活动中主要发生化学变化的是A、海水晒盐B、水力发电C、粮食酿酒D、液态空气制氧气2、为建设“美丽中国”下列说法中错误的是A、电动汽车替代燃油汽车可减少大气污染B、工业废水直接灌溉农田可节约用水C、推广使用太阳能、风能,有利于缓解“温室效应”D、新型化学电池取代干电池可减少重金属污染3、下列说法正确的是A、自来水厂净化水的过程中有化学变化B、水能灭火是因为水降低了可燃物的着火点C、空气质量级别数目越小,空气质量越差D、氮气用于食品防腐,利用了它的物理性质4、在催化剂作用下,二氧化碳能高效转化为甲醇(CH3OH...
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