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The phenomenon of removing layers of bas...

The phenomenon of removing layers of basic oxides from metals before electroplating is called

A

Galvanising

B

Anodising

C

Poling

D

Pickling

Text Solution

Verified by Experts

The correct Answer is:
D
Pickling is done by dipping the impure metal in dil.acid so as to remove the basic layer on it.
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Four metals P, Q, R and S are all obtained by the reduction of their oxides with carbon. Metal P is used to form a thin layer over the sheets of metal S to prevent its corrosion. Metal Q is used for electroplating tiffin boxes made of metal S whereas metal R is used in making car batteries. Metals Q and R form an alloy called solder. what are metals P,Q,R and S? How have you arrived at this conclusion?

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Knowledge Check

  • Process of removing layers of basic oxides from metals before electroplating is called

    A
    galvanising
    B
    anodising
    C
    pickling
    D
    poling

  • Removal of cell wall from plant is called

    A
    Tonoplast
    B
    Protoplast
    C
    Protoplasm
    D
    None

  • The removal of oxygen from a substance is called :

    A
    oxidation
    B
    corrosion
    C
    reduction
    D
    rancidity