Chemistry - Surface Chemistry Question with Solution | TestHub
ChemistrySurface ChemistryCatalysisMedium2 minQB
ChemistryMediummultiple choice
Select 'incorrect' statements :
Options:(select one or more)
Answer:
A, B, C
Solution:
A. Tetraethyllead (TEL) acts as an ANTIKNOCK AGENT, not a positive catalyst, by scavenging free radicals during combustion.
B. Alum purifies water by COAGULATING suspended impurities (like mud) through charge neutralization, forming aluminum hydroxide precipitate, not silicate complexes.
C. Higher the gold number, LESS will be the protecting power. Gold number is inversely proportional to protecting power.
D. Branching of alkyl chains in detergents DECREASES the CMC value, as it hinders micelle formation.
Stream:JEESubject:ChemistryTopic:Surface ChemistrySubtopic:Catalysis
⏱ 2mℹ️ Source: QB
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