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In which of the sols, the colloidal particles are with negative charge? [Re-NEET 2020]

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

[Re-NEET 2020]

a

Hydrated \(\mathrm{Al}_2 \mathrm{O}_3\)

b

\(\mathrm{TiO}_2\)

c

Haemoglobin

d

Starch

✓ Correct answer: d)

Starch

Explanation

Starch: Negatively charged sol.

(OLD NCERT 12^th, Part-I, Page No. 140)

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