Quiz on Chemical Effects of Electric Current

What is a good conductor of electricity?

• Copper

• Plastic

• Wood

• Rubber

Which liquid is a poor conductor of electricity?

• Distilled water

• Vinegar

• Salt solution

• Lemon juice

What happens when electric current passes through a conducting solution?

• It produces heat only

• It causes chemical reactions

• It creates light

• It makes the solution evaporate

What is the process of depositing a layer of metal on another material using electricity called?

• Electrolysis

• Electrorefining

• Electroplating

• Electromagnetism

Which of the following is NOT a good conductor of electricity?

• Aluminium

• Copper

• Iron

• Glass

What is the effect of electric current on a bulb in a circuit?

• It glows due to heating effect

• It cools down

• It changes color

• It explodes

Which of the following liquids is likely to conduct electricity?

• Sugar solution

• All of the above

• Vegetable oil

• Milk

What should you do if the bulb of a tester does not glow?

• Use a different tester

• Replace the battery

• Change the liquid

• Wait for a while

What is produced at the positive terminal of a battery when current passes through water?

• Hydrogen gas

• Oxygen gas

• Carbon dioxide

• Nitrogen gas

Which of the following is a common application of electroplating?

• Producing light

• Coating metals with a layer of another metal

• Making batteries

• Creating electric circuits