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Match list I with List-II
List-I
List-II
A) Lyophilic colloid I) Liquid - liquid
B) Emulsion II) Protective colloid
C) Positively charged III) $F e C l_{3} + N a O H$
D) Negatively charged IV) $F e C l_{3} +$ Hot water
Choose the correct option

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$A - I I, B - I, C - I V, D - I I I$

$A - I I I, B - I I, C - I, D - I V$

$A - I I, B - I, C - I I I, D - I V$

$A - I I I, B - I, C - I V, D - I I$

answer is A.

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Detailed Solution

Lyophilic sols are also called protective sols. Gelatin (lyophilic) protects gold sol (lyophobic) from coagulation on the addition of a solution of sodium chloride

An emulsion is a mixture of two or more liquids that are normally immiscible

FeCl₃ when added into hot water, it forms hydrated ferric oxide, which is a positively charged sol due to absorption of Fe³⁺ ions.

When a FeCl₃ solution is added to NaOH, a negatively charged SOL is obtained it is due to ,the preferential adsorption of OH ions

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