Click the correct answer (True or False).
Click the correct answer.
Tin cans used for storing food are made by electroplating which of the following?
Copper on iron
Iron on tin
Tin on zinc
Tin on iron
The article to be electroplated is made with which of the following?
The anode
The cathode
Either anode or cathode
None of these
Electrolysis of water is the decomposition of water into which of the following?
Hydrogen gas (H2) only
Oxygen gas (O2) only
Both hydrogen (H2) and oxygen (O2)
Hydrogen (H2) and copper (Cu)
Aluminium is extracted from its ore by passing an electric current through which of the following?
Solid bauxite (Al2O3) and cryolite (Na3AlF6)
Fused bauxite (Al2O3) and solid cryolite (Na3AlF6)
Copper sulphate (CuSO4) solution
Fused bauxite (Al2O3) and cryolite (Na3AlF6)
What should we do while trying to put out a fire in an electrical appliance?
Pour distilled water on it
Pour rainwater on it
Pour tap water on it
None of these
Click the correct answer.
The article to be electroplated is made the
.
cathode
anode
positive end
negative end
Iron is coated with
to protect it from corrosion.
zinc
rhodium
carbon
cryolite
The passage of an electric current through a solution causes
effects.
chemical
heat
light
physical
The process of depositing a layer of any desired metal on another material by means of electricity is called
.
electroplating
electrolyte
electrolysis
insulation
Tin cans used for storing food are made by electroplating
.
copper on iron
iron on tin
tin on zinc
tin on iron
