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單項選擇題

有機物中如含有雜質(zhì)其沸點會（）

A.升高
B.不變
C.下降
D.可能升高，也可能降低

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單項選擇題

鑒別醇可以用（）

A.斐林試劑
B.吐倫試劑
C.盧卡氏試劑
D.銅鐵試劑

單項選擇題

通過測量流過電解池的電量來測量在電極上起反應(yīng)物質(zhì)的量的電化學(xué)分析法被稱為（）

A.電位滴定法
B.電導(dǎo)分析法
C.電解分析法
D.庫侖分析法

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