electrolytes

1.An electric current can produce

• heating effect only.

• chemical effect only.

• magnetic effect only.

• chemical, heating, and magnetic effects.

When an electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

• the chemical effect of current.

• the heating effect of current.

• the magnetic effect of current.

• the lightning effect of current.

Which one of the following solutions will not conduct electricity?

• lemon juice

• vinegar

• tap water

• vegetable oil

Small amount of a mineral salt present naturally in water makes it a______________ of electricity.

• insulator

• conductor

• both a and b

• none of these

An electrolyte is

• a metal

• a solution

• a liquid that conducts current

• all of above

Flow of electron is called

• Electroplating

• Electric current

• Electrodes

• Electrolyte

the phenomenon of decomposition of an electrolyte when electricity is passed through is known as

• conduction

• coating

• electrolysis

• electrorefining

the electrode connected to the negative terminal of a battery is known as

• anode

• negative pole

• cathode

• electrolyte

conductors can allow electricity because of the presence of

• free ions

• free electrons

• free protons

• atoms

sea water is an example of

• bad conductor

• strong electrolyte

• weak electrolyte

• none of these