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JEE Main Chemistry question

ChemistrySurface ChemistryJEE Main

Not in JEE Main or NEET syllabus

How many of the following are positively charged sols? Gold sol, eosin sol, haemoglobin, starch sol, methylene blue sol, aluminium hydroxide sol, gelatin sol.

Answer: 3

Solution

Among the listed sols, haemoglobin, methylene blue sol and aluminium hydroxide sol are positively charged. Gold sol, eosin sol and starch sol are negatively charged, and

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Question ID VK-145161