Chemistry - Surface Chemistry Question with Solution | TestHub

ChemistrySurface ChemistryGeneralEasy2 minPYQ_2020

ChemistryEasysingle choice

The coagulation of 10 cm³of Gold sol by 1 ml 10% NaCl solution is completely prevented by addition of 0.25 g of starch to it. The gold number of starch is-

Options:

Answer:

Solution:

0.25 gm prevents coagulation of 10 ml of gold sol by 1 ml of 10% NaCl

$∴$ milligrams at starch $= 250$

$∴$ Gold number $= 250$

Stream:NTA_ABHYASSubject:ChemistryTopic:Surface ChemistrySubtopic:General

⏱ 2mℹ️ Source: PYQ_2020

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