2.2自然界的水—2021-2022学年化学鲁教版（五四制）八年级全一册随堂小测
※题型：单选题※知识点：单选题※试题难度：中等<br>生活饮用水的水质必须达到国家规定的相应指标。下列指标可通过过滤达到的是( )<br>A.澄清 B.无异色<br>C.无异味 D.无细菌和病毒<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/eec33aae0ce04d2d916a0811e95d1f50/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/515b23e5958c40c382215d66260eafbf/3B78148D6F1F5036A489C37C008F45E1.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>水是生命之源。成市生活用水经自来水厂净化处理的过程如下图。下列说法错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/18/BD059221F87955154BEC03BFCAAC6A6F.png"><br>A.通过反应沉淀池、过滤池除去水中不溶性杂质<br>B.吸附池内常用活性炭吸附色素和异味<br>C.自来水厂投入明矾进行消毒<br>D.硬度较高的自来水,用户可用煮沸的方法来降低其硬度<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f3bd9df3e9c3448cb1e89404328019e5/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>自来水厂净水过程示意图为:天然水<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/3/7FC3A893A6A148734C09F76B009137B1.png"><br>沉降→过滤→吸附<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/3/2D8F9B58E3869599A867E58BB616D350.png"><br>自来水,其中常用的絮凝剂是( )<br>A.活性炭 B.蓝矾 C.明矾 D.漂白粉<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/8c6182b6613b450e8fdee53d3f71fc9f/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ab0f5add3d75499fab2d4c6fb86cc59c/FE8DC9CFBE886DEAD0E4989D283474F7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>进行过滤操作时,下列仪器不会用到的是( )<br>A.蒸发皿<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/5EE3ACBD552EB72D4A6ABF277B00B990.png"><br>B.烧杯<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/A10A954AA965330D4135BA99A4FB366F.png"><br>C.漏斗<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/D8FB82F2A3E912DFA6C27A10C14E0CC9.png"><br>D.玻璃棒<img src="https://picture2.zhihuicn.com/testImage/2/2021/4/13/780575DF33215256BF6D51AD869D5368.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/94fe7d6d6b4a4012a9916e0b1321ac62/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/52406eedc8f04237b5c0ceef98610c82/91502A8FA4FF0004CE821ABDD055EE2F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>某同学过滤含有泥沙的水,滤液仍然浑浊,其原因可能是( )<br>A.滤纸与漏斗内壁未紧贴<br>B.漏斗的下端未靠在烧杯内壁上<br>C.倾倒液体时液面高于滤纸边缘<br>D.过滤时玻璃棒靠在三层滤纸一边<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/1fc8f42c991640b6b54329a275a2c4d3/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：容易<br>分类是学习化学的一种方法,下列物质属于纯净物的是( )<br>A.糖水 B.空气 C.黄铜 D.干冰<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/39e3468e354c409688314e5d66b543b3/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：填空题※知识点：填空题※试题难度：较易<br>水是生命之源,为了人类健康,我们应该爱护水资源。请回答下列问题:<br>1.自制简易净水器中的活性炭具有性。2.净水器中小卵石和石英砂起到作用。3.在常用净水方法中,净化程度最高的是。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/1ce83b895b6841ff8e27872023cb5bf5/986A15F11ED6C2947B3B5FD9AC2922DB.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/8751a34c640a43ab8ad8aa6aa64cc896/9F9975DDE31D63748AB2740FC9479852.png"><br><br>
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