Question:
Identify a positively charged sol from the following.
Identify a positively charged sol from the following.
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Most metal sulphides, acidic dyes and gums form negative sols, while haemoglobin forms a positive sol.
Updated On: Nov 12, 2026
- Antimony trisulfide
- Eosin
- Gum
- Hemoglobin
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
Colloidal particles carry an electric charge, which may be positive or negative depending on the substance.
Step 2: Classify the sols
Negatively charged sols: antimony trisulfide (metal sulphide), eosin (acidic dye), gum (macromolecular colloid).
Positively charged sols include haemoglobin (blood), hydrated metal oxides and basic dyes.
Step 3: Compare the options
Only haemoglobin is positively charged, which is the last option.
Final Answer:
Haemoglobin forms a positively charged sol. \[ \boxed{\text{(D) }\text{Hemoglobin}} \]
Colloidal particles carry an electric charge, which may be positive or negative depending on the substance.
Step 2: Classify the sols
Negatively charged sols: antimony trisulfide (metal sulphide), eosin (acidic dye), gum (macromolecular colloid).
Positively charged sols include haemoglobin (blood), hydrated metal oxides and basic dyes.
Step 3: Compare the options
Only haemoglobin is positively charged, which is the last option.
Final Answer:
Haemoglobin forms a positively charged sol. \[ \boxed{\text{(D) }\text{Hemoglobin}} \]
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