Chemical Effect of electric current

Electroplating is based on ___________of an electric current.

• Physical effect

• Chemical effect

• Heating effect

• Magnetic effect

Adding common salt to distilled water makes it

• Good Conductor

• Poor Conductor

• No change

• Both A and B

An electrolyte is

• a metal

• a solution

• a liquid that conducts electricity

• none of these

Flow of electrons is called

• Electrode

• Electrolyte

• Electric current

• Electroplating

Which one of the following solutions will not conduct electricity?

• lemon juice

• vinegar

• tap water

• vegetable oil

Which of the following statements is incorrect about the conductivity of water?

• distilled water becomes a good conductor of electricity on addition of vinegar

• On addition of table salt, water conducts electricity.

• On addition of lemon juice, water conducts electricity.

• Water becomes a good conductor of electricity when heated.

LED stands for

• light emitting diode

• light efficient diode

• length emitting diode

• light emitting device

Sugar solution is a good conductor of electricity.

• True

• False

Tags

NGSS.MS-PS2-3

When current is passed through a mixture of water and lemon juice, bubbles rise from the electrodes. The bubbles are rising from the solution because

• of the heating effect of current

• of the chemical effect of current

• current produces magnetic field around the electrodes

• current always produces air bubbles when passed through a liquid

Electroplating prevents

• electric current

• chemical effect

• lightening

• rusting