6.1燃烧与灭火—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：容易<br>下列图标表示“禁止燃放鞭炮”的是( )<br>A.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/6/3E7D8F5CB5A47471278D9ABB8897BC28.png"><br>B.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/6/9022BF17DE5068D8D0C824D7823B2EE6.png"><br>C.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/6/775C447B28EEB83BCBF568BF41DC6EE1.png"><br>D.<img src="https://picture2.zhihuicn.com/testImage/2/2021/7/6/4824B9789E3B068AAD4F8828359DBE4A.png"><br><br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/cc74d7e153b64ba6b1dfcd9917c2e10e/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/0c8ebe2ba1524a7cbb6366bbcfb4e9fa/EEAE1DDD875A444474634C9CE8819610.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列说法错误的是( )<br>A.油锅着火用锅盖盖灭,原理是隔绝空气<br>B.木材着火用水浇灭,是降低着火点来灭火<br>C.扑灭森林火灾时,砍掉树木形成隔离带,原理是清除可燃物<br>D.煤块粉碎后燃烧,可以提高燃料的利用率<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/11b6370f6fad4978866aafaf7dbe0ca4/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列有关安全问题的说法中,有科学性错误的是( )<br>A.久未开启的地窖<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/31/7002435560602C62060BA723DC55D86C.png"><br>含量高,若贸然进入,易发生窒息<br>B.在化粪池等有沼气的井盖口燃放鞭炮,易引起爆炸<br>C.用煤炉取暖时,可在屋里洒些石灰水,以防煤气中毒<br>D.室内煤气泄漏时,若立即打开排气扇通风,易引起爆炸<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2020/25eb60feeec2458ca1ec1ffd51d6f145/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2020/506e6d463ce446eb8daf29f8178a7a9d/4A144508C7F0DA03028798D220A0F91E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下列处理方法错误的是( )<br>A.实验室用剩的药品放入指定容器内<br>B.电线短路起火,用水泼灭<br>C.炒菜时油锅着火,用锅盖盖灭<br>D.桌面上酒精燃烧用湿抹布盖灭<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/9cc37a5347f0490383bb432ddf5cad09/76900E09FAB5EBA344B8EA84E844FF07.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>我们通常用灯帽熄灭酒精灯,该方法应用的灭火主要原理是( )<br>A.清除可燃物 B.降低可燃物着火点<br>C.隔绝空气 D.使可燃物温度降到着火点以下<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/c012d7f0f9d04f5abfc654fae7f7cae2/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/5/2021/ad48229da700482ba5ab172e5e25079d/3A0FEB8B7CE284B435AC69C8FE0AA62D.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>已知白磷的着火点是40℃,红磷的着火点是240℃。图为某实验示意图,有关该实验说法错误的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2021/6/23/8CAC7199EBD909B680615CCEACD16EC4.png"><br>A.只有铜块上的白磷燃烧<br>B.向水中的白磷通氧气,白磷会燃烧<br>C.热水的作用既提供热量又隔绝空气<br>D.升高水的温度,铜块上的红磷也能燃烧<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/175ae8c10ba44a83a3453c6e5b4a843e/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>“人要忠心,火要空心”木柴架空一些后燃烧时火焰变大,架空的目的是( )<br>A.增加氧气含量 B.降低木柴的着火点<br>C.升高木柴的温度 D.增大木柴与空气的接触面积<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/c16474ce86ce4332af860dc87c6b08ce/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br>略<br>※题型：问答题※知识点：问答题※试题难度：较易<br>请解释下列灭火措施的灭火原理。<br>1.住宅失火时,消防队员用水灭火。________________________________2.炒菜油锅着火时,用锅盖盖灭。________________________________3.扑灭森林火灾时,设置隔离带。________________________________<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/5/2021/292ea730c93147f8a3850c3cf05c545d/67277CCE47A831D995AE60C54E25F1D5.png"><br>解析<br>略<br>
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