IGCSE Chemistry CIE Quiz

What is the role of an electrode in an electrolytic cell?

• To produce hydrogen gas

• To form non-metal ions

• To conduct electricity into the electrolyte

• To attract positively charged ions

Which ions are attracted to the anode in the electrolysis of aqueous solutions?

• Halide ions

• Non-metal ions

• Metal ions

• OH- ions

What gas is produced at the anode during the electrolysis of dilute sulfuric acid?

• Hydrogen gas

• Carbon dioxide

• Chlorine gas

• Oxygen gas

What is the product formed at the cathode during the electrolysis of aqueous copper sulfate?

• Oxygen gas

• Hydrogen gas

• Copper metal

• Sodium hydroxide solution

What happens at the cathode during electrolysis if the metal is above hydrogen in the reactivity series?

• Hydrogen gas is produced

• Oxygen gas is produced

• Sodium hydroxide solution is formed

• Metal is produced

What mnemonic can be used to remember which electrode is the positive and which is the negative?

• OIL RIG

• PANIC

• HOH

• CATHODE

What is the process of oxidation and reduction in terms of electron loss or gain?

• Oxidation is when a substance gains electrons and reduction is when a substance loses electrons

• Oxidation is when a substance loses electrons and reduction is when a substance gains electrons

• Oxidation is when a substance forms neutral substances and reduction is when a substance loses electrons

• Oxidation is when a substance loses electrons and reduction is when a substance forms neutral substances

What is the product formed at the anode during the electrolysis of aqueous sodium chloride?

• Sodium hydroxide solution

• Oxygen gas

• Chlorine gas

• Hydrogen gas

What gas is produced at the cathode during the electrolysis of aqueous sodium chloride?

• Sodium hydroxide solution

• Oxygen gas

• Chlorine gas

• Hydrogen gas

What is the role of the power supply in an electrolytic cell?

• To attract positively charged ions

• To conduct electricity into the electrolyte

• To produce hydrogen gas

• To form non-metal ions