第二章单元测试
- Which one is not the main component of suction filtration?（ ）
- Which burette is suitable for strong oxidizing solutions(强氧化性溶液)?（ ）
- Which balances are common used in this lab course? （ ）
- Which operations of volumetric flask may cause the concentration different from the actual one?（ ）
- Press the top of pipette with the thumb. （ ）
A:Buchner funnel B:Vacuum pump C:Filter flask D:Erlenmeyer flask
答案:Erlenmeyer flask
A:Burette with rubber B:None of the above C:Burette with PTFE stopcock(聚四氟乙烯旋塞) D:Alkali burette
答案:Burette with PTFE stopcock(聚四氟乙烯旋塞)
A:Electronic balance(电子天平) B:Analytical balance(分析天平) C:Magnetic balance(磁天平) D:Spring scale(弹簧秤)
答案:Electronic balance(电子天平)###Analytical balance(分析天平)
A:Add the solution to be prepared up to the mark B:Add the deionized water up to the mark C:Rinse the volumetric flask with the solution to be prepared D:Rinse the volumetric flask with the deionized water
答案:Add the solution to be prepared up to the mark###Rinse the volumetric flask with the solution to be prepared
A:对 B:错
答案:错
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