Electrolysis

What is the name of the positive electrode?

• cathode
• anode

What is the name of the negative electrode?

• cathode
• anode

What is the ore of aluminium called?

• Baxite

• Bauxite

• Cryolite

• Malachite

The electrodes in electrolysis of aluminium are made of

• Steel

• Anodes

• Graphite

• Plastic

What do you add to aluminium ore to reduce its melting temperature?

• Dendrite

• Malachite

• Bauxite

• Cryolite

When NaCl solution is electrolysed what has forms at the anode?

• Hydrogen
• Oxygen
• Chlorine
• Sodium

which of the following is an example of non-electrolyte?

• NaOH

• HCl

• CuSO₄

• CCl₄

In electrolysis of water , oxygen is released at _______

• positive terminal

• negative terminal

• anion

• cation

What is an ore?

• a solid metal

• a rock containing a metal combined with other elements, often oxygen

• an element

• an object used to row a boat

Which element cannot be extracted from its ore by reduction with carbon?

• iron

• aluminium

• copper

• zinc