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Chemical Engineering Basics

Q1:

Color of brass changes from yellow to __________ after its dezincification which exemplifies selective leaching.

A grey

B red

C orange

D violet

ANS:B - red

The color of brass changes from yellow to red after its dezincification, which exemplifies selective leaching. Dezincification is a process where zinc is selectively removed from the alloy, leaving behind a copper-rich residue. This change in composition leads to a reddish appearance due to the increased copper content on the surface of the alloy.



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