配套习题- 混合物的分离和提纯—

1/5单选题

难度：

1.关于过滤操作的描述，不正确的是

A	滤纸应紧贴漏斗内壁并用少量水润湿，使滤纸与漏斗壁之间没有气泡
B	漏斗内的过滤液的液面应高于滤纸边缘
C	要沿着玻璃棒慢慢向漏斗中倾倒过滤液
D	漏斗下端管口应紧靠烧杯内壁

正确答案：Qg==

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

2/5单选题

难度：

2.以下过滤操作中，不正确的是

A	滤纸应紧贴漏斗内壁并用少量水润湿，使滤纸与漏斗壁之间没有气泡
B	漏斗下端管口应紧靠烧杯内壁
C	倒入漏斗的过滤液的液面应高于滤纸边缘
D	要沿着玻璃棒慢慢向漏斗中倾倒过滤液

正确答案：Qw==

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

3/5单选题

难度：

3.下列实验操作中属于过滤的是

A
B
C
D

正确答案：QQ==

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

4/5单选题

难度：

4.过滤时不需要的玻璃仪器是

A	烧杯
B	玻璃棒
C	漏斗
D	试管

正确答案：RA==

6L+H5ruk6ZyA6KaB55qE5Luq5Zmo5pyJ77ya54On5p2v44CB546755KD5qOS44CB6ZOB5p625Y+w44CB5ryP5paX77yb54On5p2v55So5p2l55ub5pS+5ray5L2T77yM5ryP5paX55So5LqO6L+H5ruk77yM546755KD5qOS55So5p2l5byV5rWB5ZKM5pCF5ouM77yMPGJyPuaJgOS7peS4jemcgOimgeivleeuoQ==

5/5单选题

难度：

5.在粗盐提纯实验中，下列操作正确的是

A	为加快过滤速度，用玻璃棒在漏斗中进行搅拌
B	过滤时，漏斗中液体的液面应低于滤纸边缘
C	蒸发时，有晶体析出后就不用玻璃棒搅拌
D	当蒸发皿中液体全部蒸干后，才能停止加热

正确答案：Qg==

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