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  4. A sample of red ink (a colloidal suspension) is prepared by mixing eosin dye, egg white, HCHO and water. The component which ensures stability of the ink sample is :-

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Q. A sample of red ink (a colloidal suspension) is prepared by mixing eosin dye, egg white, $HCHO $ and water. The component which ensures stability of the ink sample is :-

JEE MainJEE Main 2020Surface Chemistry

Solution:

The component which ensures the stability of the ink sample is egg white