variation of surface tension | Chemistry |JEE Advanced 2016

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JEE Advance 2016

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THe qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solution of $\mathrm{KCl}, \mathrm{CH}_3 \mathrm{OH}$ and $\mathrm{CH}_3\left(\mathrm{CH}_2\right)_{11} \mathrm{OSO}_3-\mathrm{Na}^{+}$ at room temperatu

re. The correct assignment of the sketches is

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A

B

C

D

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