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Heating and Chemical Effect of Current — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsHeating and Chemical Effect of Current1 Mark
Question
Electroplating does not help in(a) Fine finish to the surface(b) Shining appearance(c) Metals to become hard(d) Protect metal against corrosion
   
   
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Answer

(c) Metals to become hard

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