121.
When a spoon is to be electroplated with nickel the spoon is

122.
Conversion of chemical energy into electrical energy occurs in

123.
The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :

124.
Galvanization of iron is carried out using

125.
The working of a dry cell is based on

126.
Galvanization is the :

127.
Which one of the following metals is used to galvanise iron ?

128.
A non-electronic conductor is

129.
The anode of a dry cell is made up of

130.
The coating of a thin layer of zinc on steel or iron objects is known as