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Q.

In which of the sols, the colloidal particles are with negative charge?

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a

Starch

b

$Hydrated {Al}_{2} O_{3}$

c

Haemoglobin

d

${TiO}_{2}$

answer is D.

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Detailed Solution

Sols	Charge on sols
Hydrated ${Al}_{2} O_{3}$	Positive
${TiO}_{2}$	Positive
Haemoglobin	Positive
Starch	Negative

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