Salt Bridge in Voltaic cell

 Q: Why we use Salt bridge in Voltaic cell? Ans:  Salt Bridge keeps the solution (electrolyte) of the electrodes neutral by providing...

Fine Silver

  Q:    Why pure or fine silver is not often used to make jewelries? Ans:   Because pure or fine Silver is very malleable, soft and can...

Electroplating of Zinc

Q: In electroplating of zinc, Why the target(object) is cleaned first in alkaline solution and then treated with acid? Ans:     To remove ...

Electroplating 0f Chromium

  Q:      Why steel is first plated with Nickle or Copper in electroplating of Chromium? Ans:     Because Chromium does not adheres ...

Coated iron

Q: Why tin Plated iron rusted rapidly when tin layer is broken while zinc coated iron does not rust even after the coating surface is bro...

Paint, grease and oil prevent corrosion

Q: How paint, grease and oil prevent corrosion? Ans:    Paint, grease and oil are organic compounds having high molecular weight. When the...

Coating of Metals

  Q:    Why we paint grease, coat metals or why we make metal alloy?  Ans:    We paint, grease, coat metals or we make them alloys to p...