Solution of this one pls

Dear student,

Tyndall effect is more effective in gold sol as compared to the rubber sol.

The conductivity of a soap solution decreases sharply at CMC because at
 some concentration, the surface becomes completely loaded with surface and any further additions arrange as micelles. This cause a decreases in the number of free ions to conduct electricity.

CMC value of CH3(CH2)9NH3+Cl- will be lesser than that of CH3(CH2)12COONa this is because larger alkyl chain leads to the increase in CMC value.

The elevation in boiling point of an alcoholic solution of sulphur is more than that of its sol in water if mass of sulphur present per unit volume of mixture is same in both cases.

Hence, the correct option is (d).

Regards
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