【多选题】【消耗次数:1】
下列试剂中能用来作为苯甲醛和苯甲醇鉴别的有( )
金属钠
托伦试剂
希夫试剂
卢卡斯试剂
碘的氢氧化钠溶液
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相关题目
【单选题】 在实验中用硫酸铝和下列试剂中的一种制备氢氧化铝,则该试剂最好是(  )。
①  石灰水
②  氨水
③  硫酸
④  氢氧化钠溶液
【多选题】 下列试剂中能用来鉴别1-丁醇和2-丁烯-1-醇的有( )
①  溴的四氯化碳溶液
②  酸性高锰酸钾
③  硝酸银醇溶液
④  酸性重铬酸钾
⑤  卢卡斯试剂
【单选题】 卢卡斯试剂是由(  )与无水氯化锌所配置的溶液。
①  稀盐酸
②  浓盐酸
③  稀硫酸
④  浓硫酸
【多选题】 下列试剂中能用来鉴别1-氯环己烷和环己烯的有( )
①  Br2/H2O
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【单选题】 与氢氧化钠及高锰酸钾试液共热可生成苯甲醛特殊气味的药物是
①  多巴胺
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【单选题】 卢卡斯试剂不适合含有的碳数为(  )以上的醇的鉴别。
①  6
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①  正确
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①  伯醇
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①  正确
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随机题目
【单选题】 5.I will visit you if Father me.
①  let
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④  will let
【单选题】 9.“Has he seen this film?” “Yes. He _______ it several days ago.”
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③  had seen
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【单选题】 3.A hunter is a man who animals.
①  catch
②  catches
③  will catch
④  was catching
【单选题】 2.She the door before she goes away.
①  had locked
②  is locking
③  has locked
④  was locking
【单选题】 4.What if I drink this?
①  happens
②  is happening
③  will happen
④  is happened
【单选题】 10.Now Mike isn’t here. He _________ Mr. Green’s. Perhaps he _______ back in a few minutes.
①  went to; is coming
②  has gone to; will come
③  has been to ; will be
④  is going to; has come
【单选题】 6.Look out! That tree _______ fall down.
①  is going to
②  will be
③  shall
④  would
【单选题】 8.They can’t leave until they ______ their work.
①  did
②  are doing
③  have done
④  has done
【单选题】 1.When I saw Mary, she on the piano.
①  is playing
②  plays
③  was playing
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【单选题】 7. My uncle __________ to see me. He’ll be there soon.
①  comes
②  is coming
③  had come
④  came