Q12 / 90 · JEE Main 2021 (18 Mar Shift 2) · Chemistry

The charges on the colloidal $CdS$ sol and ${TiO}_{2}$ sol are, respectively :

A
positive and positive
B
positive and negative
C
negative and negative
Correct answer
D
negative and positive

Solution

$CdS sol$ $\to - ve sol$

${TiO}_{2} sol \to + ve sol$

Hence, the correct answer is option: 'D'.

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