MHT-CET

18. Surface chemistry question bank (Chemistry)

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Q1.

Which of the following statements is $NOT$ true about lyophilic colloids?

(A)

The particles of the dispersed phase have a greater affinity for the dispersion medium.

(B)

These are reversible.

(C)

These are self-stabilized.

(D)

Coagulation occurs even by adding a very small amount of electrolytes.

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Q2.

Identify the correct decreasing order of precipitation power of the flocculating ion added from the following.

(A)

$Al^{3+} \gt Ba^{2+} \gt Na^{+}$

(B)

$Ba^{2+} \gt Al^{3+} \gt Na^{+}$

(C)

$Al^{3+} \gt Ba^{2+} \gt Na^{+}$

(D)

$Na^{+} \gt Ba^{2+} \gt Al^{3+}$

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