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What happens when a lyophilic sol is added to a lyophobic sol?

1. Film of lyophilic sol is formed over lyophobic sol
2. Lyophilic sol is dispersed in lyophobic sol
3. Film of lyophobic sol is formed over lyophilic sol
4. Lyophobic sol is coagulated

Correct answer: Film of lyophilic sol is formed over lyophobic sol

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