JEE Main 2012 — Surface Chemistry Question with Solution
JEE Main 2012 (19 May Online)
Question
On addition of of solution to 10 gold sol in the presence of of starch, the coagulation is just prevented. Starch has gold number
Choose an option
Show full solutionCorrect option: B
Correct answer
B25
Step-by-step explanation
Gold Number is the minimum amount of lyophilic colloide in miligrams (starch in given case) which prevents the flocculation of gold sol by the addition of of solution.
Gold number miligram of starch
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This is a previous-year question from JEE Main 2012, 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.