3.2海水“晒盐”—2021-2022学年化学鲁教版（五四制）九年级全一册随堂小测
※题型：单选题※知识点：单选题※试题难度：较易<br>在“粗盐中难溶性杂质的去除”实验中,不需要进行的操作是( )<br>A.溶解 B.过滤 C.蒸发 D.蒸馏<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2019/761c42ffa9864337b049cf861b8fce64/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2019/7fe59f14dd8a4ec1af28e7c236b0785d/6A264096B61940C5E7CC52B1DAB07F02.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是小勇设计的分离<img src="https://picture2.zhihuicn.com/testImage/2/2019/6/10/D123B72649140E010DE86A4CC1D7F901.png"><br>固体混合物的流程图,图中的数字序号所对应的操作步骤错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/6/10/EED2C02E86E59DCC13F4CB51D1BA6BE9.png"><br>A.①—加水溶解 B.②—结晶<br>C.③—蒸发 D.④—洗涤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2019/7fccbe248cdf4672a9f6c40d75949a0c/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2019/6e97a59d8dc041a186ea8cce370c01c5/ACFA613167CFD5196772C5A8C2C10FEB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>在粗盐提纯的实验中,下列操作正确的是( )<br>A.粗盐称量<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/22/4182CE5F29631029942CE8B368F63297.png"><br>B.粗盐溶解<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/22/6A5BB07E825FDC1E295975A42616ECA0.png"><br>C.浊液过滤<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/22/B2A28AFF7C62D5A1EF25D02E3DB1606D.png"><br>D.蒸发结晶<img src="https://picture2.zhihuicn.com/testImage/2/2021/5/22/280F9C96583FC5EE8C8D2C1DEC5F329D.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9183285f8ec94f3a9af38ff7a4d50cf0/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/cfca2870b0de4cea93dd76a0cb653dc4/A7367D7E499594934EFCCE450DE14DED.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列关于粗盐提纯实验的说法正确的是( )<br>A.将粗盐用足量水充分溶解,一定得到澄清溶液<br>B.粗盐溶液过滤后如果滤液仍浑浊,应再过滤一次<br>C.实验中经过滤、蒸发结晶所得到的食盐属于纯净物<br>D.蒸发结晶时,蒸发皿应放在石棉网上加热<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/e5956ce35b744dc3a79f371c676b7250/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/1263a529fb284429886553e1ca847f63/28FA4D27BC36D3EFF4EF8D3076B84A28.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>海水晒盐的原理是( )<br>A.海水分解<br>B.温度升高,其他溶质的溶解度增大<br>C.升高温度,降低食盐在水中的溶解度<br>D.利用阳光、风力蒸发水分使氯化钠成晶体析出<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/d82d4ab5cf1e4ee4b8dbce41fa6fb860/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/c7124d90980a409890cdd088ae79f29e/4F55F64116974927B05A8E71CED4181F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>海水综合利用流程如下,有关说法错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/29/01190D99E1C44CAB39B58F6299B5050C.png"><br>A.从母液中可进一步制得金属镁<br>B.①处操作是溶解、过滤、蒸发结晶<br>C.海水“晒盐”得到的粗盐还含有杂质<br>D.析出粗盐后的母液是氯化钠的不饱和溶液<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/f96dcc0812f9419499e371b8372a1c43/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/9b865aac25b44de5bff16d85d5641904/CC58EBD24EE659592D69988DB7D7B285.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列有关海水晒盐的说法中,错误的是( )<br>A.海水成为食盐的饱和溶液后才能析出晶体<br>B.盐场必须建在阳光充足、雨量少的地方<br>C.结晶池中析出盐后的母液没有用途,为防止污染须排入大海<br>D.盐场利用日晒、风吹晒盐,采取的是蒸发结晶的方法<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/a010e76fd20148d2aa6e54c02a0a511d/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/007f98aa01f6493c9ded4dd5ae0a46fe/CA451AEC0974F39DAB298F23D0400386.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列关于海洋开发利用的说法中不正确的是( )<br>A.海水“晒盐”是利用蒸发结晶的方法从海水中得到食盐<br>B.海洋是个巨大的资源库,人们可以无节制地向它索取各种资源<br>C.海洋本身是个巨大的水资源库,如何获取廉价的淡水对缓解淡水危机意义重大<br>D.海水“制碱”是向饱和氨盐水中通入二氧化碳过滤,加热过滤后的固体得到纯碱<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/4ab90ee204f14d05b8cb5c389cfa1c8a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/c0acc87cd203428f88cab1117eacbf19/4FC6CAC15C227F35C856B3A1EB5808EE.png"><br><br>
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