Methods of Separating Substances

What is the main purpose of filtration?

• To enhance the flavor of liquids.

• To increase the temperature of gases.

• To mix different types of solids.

• The main purpose of filtration is to separate solids from liquids or gases.

Which technique is used to separate solids from liquids using a filter paper?

• Evaporation

• Centrifugation

• Distillation

• Filtration

What is winnowing primarily used for?

• To grind grain into flour.

• To separate grain from chaff.

• To store harvested crops.

• To water the fields.

Which method involves shaking a mixture to separate particles based on size?

• Filtration

• Evaporation

• Sieving

• Threshing

What is the purpose of threshing in agriculture?

• To harvest fruits from trees.

• To water the crops effectively.

• To plant seeds in the soil.

• To separate grains from their husks.

How can handpicking be useful in separating substances?

• Handpicking can only be used for liquid substances.

• Handpicking is effective for separating substances based on their weight.

• Handpicking is a method that requires advanced machinery to be effective.

• Handpicking allows for the selective removal of substances based on visible characteristics.

What is sedimentation and how does it occur?

• Sedimentation is the process of particles settling out of a fluid.

• Sedimentation is the process of water evaporating from a surface.

• Sedimentation occurs when particles are dissolved in a fluid.

• Sedimentation is the movement of fluid from one location to another.

Which method would you use to separate sand from water?

• Evaporation

• Distillation

• Filtration

• Centrifugation

What is the difference between filtration and sieving?

• Filtration is used for cooking, while sieving is for cleaning.

• Filtration and sieving are the same processes used interchangeably.

• Filtration separates liquids from gases, while sieving separates liquids from solids.

• Filtration separates solids from fluids, while sieving separates particles based on size.

In what scenario would you use evaporation to separate substances?

• To separate two immiscible liquids.

• To purify a gas from a mixture.

• To extract a solid from a solid mixture.

• To separate a soluble solid from a liquid solution.