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WorksheetsChemical Effect of Current
Total questions: 15
Worksheet time: 8mins
A bulb placed in the electric circuit in the given experimental set-up does not glow because:
The liquid used in the above experiment may be a strong electrolyte.
The liquid used in the above experiment may not be conducting electricity.
The bulb may be fused
Both [b] and [c]
LED refers to:
Light electrolyte diode
Light emitting diode
Less electrolyte demand
Light electrolyte demand
Which one of the following is correct pair?
Cathode - Positive electrode
Anode - Negative electrode
Cation - Negative ion
Anion - Positive ion
None of these
Which of the following is correct for electroplating a metal X with copper through electrolysis?
Metal X-Anode
Copper-Cathode
Copper sulphate solution Electrolyte
All the above
Electrode connected to negative terminal of the battery is a/an:
Electrolyte
Anode
Cathode
None of these
To purify copper metal by electrolysis which of the following is used as electrolyte
NaCl
solution
CuSO4
solution
H2SO4
solution
MgSO4
solution
Which gas is produced at anode when current passes through acidified water?
Hydrogen
Oxygen
Nitrogen
None of these
Glowing of bulb when current passes through it is an example of:
Chemical effect of electric current.
Heating effect of electric current.
Magnetic effect of electric current.
All the above
The diagram shows a beaker containing a solution of zinc sulphate and two carbon electrodes. A battery is placed next to it. In order that the electrode P be plated with zinc
P must be connected to S and Q to R
P must be connected to S and Q to R
P must be connected to R and Q to S
P and Q must be connected to R.
Which of the following statements is incorrect?
Anode is an electrode connected to the positive terminal of the battery.
Pure water is poor conductor of electricity.
Pure water is poor conductor of electricity.
Ions can have only a positive charge.
Which of the following is correct?
Water can be used for extinguishing fires caused due to electrical faults.
Carbon is a non-metal so it cannot be used in electrolytic cell.
A liquid conducts electricity because of the presence of ions.
Pure water forms ions to conduct electricity.
In electrolytic solutions, which of the following acts as carrier of charge?
Protons
Electrons
Neutrons
Ions
Which of the following energy conversions takes place in a cell?
Electrical energy into chemical energy
Chemical energy into electrical energy
Magnetic energy into electrical energy
Electrical energy into mechanical energy
What is the splitting of a compound using electricity called?
Electrolysis
Electrolyte
Electrokinesis
Electrochemistry
Why is zinc better than tin for electro- plating a piece of iron in order to prevent it from rusting?
Zinc is cheaper than tin.
Tin is toxic.
Zinc can prevent iron from coming into contact with water and air.
Rusting is prevented even when the zinc layer is broken.
