【題目】下列溶液中，溶質(zhì)是液體的是（ ）

A.醫(yī)用葡萄糖溶液 B.20%的氫氧化鈉溶液

C.75%的消毒酒精 D.0.9%的生理鹽水

【答案】C

【解析】

試題分析：溶質(zhì)可以是固體、液體、氣體，溶劑只能是液體，當兩種液體相互溶解時，以量多的為溶劑，量少的為溶質(zhì)；如果兩種液體中有水，則不論水量的多少，水都是溶劑。A.醫(yī)用葡萄糖溶液是固體葡萄糖溶于水形成的，溶質(zhì)是固體葡萄糖，錯誤；B.氫氧化鈉在常溫下是固體，氫氧化鈉溶液中，溶質(zhì)是固體氫氧化鈉，故B錯誤；C.75%的消毒酒精是酒精溶于水水形成的，其中酒精占了75%，水占了25%，酒精是溶劑，酒精在常溫下是液體，故正確；D.0.9% 的生理鹽水是食鹽的水溶液，食鹽是溶質(zhì)，食鹽在常溫下是固體，D錯誤。故選C

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