Separation Techniques Quiz

What is magnetic separation used for?

• Separating gold from sand

• Separating iron from non-magnetic materials

• Separating water from salt

• Separating oil from water

Which metals are attracted to magnets?

• Gold, silver, aluminium

• Iron, nickel, cobalt

• Copper, zinc, tin

• Lead, mercury, platinum

What is an example of magnetic separation in real life?

• Filtering tea

• Separating oil and water

• Removing iron from rubbish for recycling

• Extracting salt from seawater

Which material cannot be separated using a magnet?

• Iron

• Cobalt

• Aluminium

• Nickel

What equipment is required for magnetic separation?

• Sieve

• Beaker

• Magnet

• Funnel

Gravity separation relies on:

• Magnetism

• Size differences

• Gravity pulling heavier substances down

• Heating the mixture

Gold panning is an example of which separation technique?

• Filtration

• Gravity separation

• Distillation

• Chromatography

Why do heavier particles settle to the bottom during gravity separation?

• They are attracted to the container

• They dissolve in water

• Gravity pulls them down faster than lighter particles

• The liquid evaporates, leaving them behind

What is decanting?

• Pouring off the top layer of liquid after heavier substances settle

• Using a magnet to separate materials

• Separating substances based on size

• Boiling liquid to separate it

What real-life process uses gravity separation?

• Using a tea bag

• Separating iron from rubbish

• Gold panning

• Evaporating salt from seawater