JEE Main 2019ChemistrySurface ChemistryEasyMCQ

JEE Main 2019 — Surface Chemistry Question with Solution

JEE Main 2019 (10 Jan Shift 2)

Question

The haemoglobin and the gold sol are examples of

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Show full solutionCorrect option: D
Correct answer
Dpositively and negatively charged sols, respectively.

Step-by-step explanation

Hemoglobin and gold sol both are colloids and always carry an electric charge. Hemoglobin is a positively charged sol, because in hemoglobin, Fe+2 ion is the central metal ion of the octahedral complex. All metal sols like, Au-sol, Ag-sol etc. are negatively charged sols

The gold sol is negatively charged, while the haemoglobin is positively charged.

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About this question

This is a previous-year question from JEE Main 2019, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.