Practice test

Which gas is liberated when metals react with acids?

• Hydrogen

• Oxygen

• Nitrogen

• Chlorine

___________ electrode is an inert electrode.

• Copper

• Iron

• Carbon

• Zinc

1. Alkali metal oxides are _______ in nature.

• a. Basic

• b. Acidic

• c. Neutral

• d. Sour

Ionic compounds do not conduct electricity when they are solid because,

• their electrons are not free to move

• their ions are free to move

• their ions are not free to move

• their electrons are free to move

The product obtained at the anode during the electrolysis of acidified water is:

• a. 1 volume of hydrogen gas

• b. 2 volumes of hydrogen gas

• c. 1 volume of oxygen gas

• d. 2 volumes of oxygen gas.

Oxidation is loss of electron. Where does oxidation take place during electrolysis.

• At anode

• In the electrolyte

• At the circuit

• At cathode

In electrolysis of pure ionic molten compounds, metal is formed at

• a. Anode

• b. Cathode

• c. Inert electrode

• d. Base of all apparatus

Explain why the electrolyte has to be a liquid.

• So the ions can move
• So the electrons can move
• So that it doesn't get too hot
• So the fish are ok

What is the name given to the solution that is being electrolysed?

• Salt solution
• Electric solution
• Mineral solution
• Electrolyte

What kind of Electrical Current does Electroysis require?

• Direct
• Indirect
• Anternative
• A alternating