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Chrome plating: Quiz


Question 1: Chromium may be stripped anodically in an aqueous solution of sodium hydroxide or inhibited ________.
Hydrogen chlorideHydrochloric acidEthanolSulfuric acid

Question 2: In 2007, a ________ (RoHS) was issued banning several toxic substances for use in the automotive industry in Europe, including hexavalent chromium, which is used in chrome plating.
Electronic wasteRestriction of Hazardous Substances DirectiveMercury (element)Cadmium

Question 3: The chromed layer can be decorative, provide ________ resistance, ease cleaning procedures, or increase surface hardness.

Question 4: ________: 2.25–3.0 g/l, although it is usually measured in molarity or percent concentration
AmmoniaHydrochloric acidAcetic acidSulfuric acid

Question 5: The most expensive and durable process involved plating the steel first with ________, and then nickel, before the chromium plating was applied.

Question 6: Chrome plating, often referred to simply as chrome, is a technique of electroplating a thin layer of ________ onto a metal object.

Question 7: ________ baths whose main ingredient is chromic anhydride.
Lung cancerChromium trioxideChromate and dichromateHexavalent chromium

Question 8: Hydrochloric, hydrofluoric, and ________ can be used.
Hydrochloric acidSulfuric acidAcetic acidAmmonia

Question 9: ________ is also popular for the etching of Nimonic alloys.
Iron(II) chlorideIronIron(III) chlorideAluminium chloride


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