Separation Techniques

It is possible to separate a mixture and get the original materials back.

• True
• False

When is handpicking used as a separation technique?

• To separate magnetic materials from nonmagnetic materials
• To separate a mixture of an insoluble solid and a liquid
• To separate water and salt
• To separate a mixture of solids with different sizes

What is the process used to separate a mixture of solids with different sizes?

• Magnetism
• Sieving
• Handpicking
• Filtering

What is the process used to separate a mixture of sand and water?

• Sieving
• Magnetism
• Handpicking
• Filtering

When is sieving used as a separation technique?

• To separate magnetic materials from nonmagnetic materials
• To separate water and salt
• To separate a mixture of an insoluble solid and a liquid
• To separate a mixture of solids with different sizes

When is the process of sedimentation and decanting used?

• When a mixture of oil and water needs to be separated
• When particles are large enough to be seen clearly
• When two liquids have different densities
• When two liquids need to be decanted

What is the process of evaporation used for?

• Separating a mixture of oil and water
• Separating two liquids with different densities
• Removing water from a solution
• Separating pebbles from rice

What is the process used to separate a mixture of an insoluble solid and a liquid?

• Handpicking
• Sieving
• Magnetism
• Filtering

What is the process used to separate water and salt?

• Evaporation
• Handpicking
• Filtering
• Sieving

What is the simplest method of separation of substances?

• Filtering
• Handpicking
• Evaporation
• Sieving