Grade 6 Science Quiz: Separation of Substances

What is the process of separating grains from the stalk by beating called?

• Filtration

• Sieving

• Winnowing

• Threshing

Which method is used to separate heavier and lighter components of a mixture by wind or blowing air?

• Hand-picking

• Sieving

• Threshing

• Winnowing

Why do we separate substances from mixtures?

• To increase impurities

• To create mixtures

• To reduce recycling

• To obtain pure substances

What is the purpose of sieving in separating substances?

• To evaporate liquids

• To separate substances of different sizes

• To separate liquids from solids

• To condense gases

Which method is used to separate small particles from larger ones using a tool with tiny holes?

• Sieving

• Evaporation

• Filtration

• Decantation

What is the process of separating grains from the stalk by beating called?

• Filtration

• Winnowing

• Threshing

• Sieving

Which method is used to separate heavier and lighter components of a mixture by wind or blowing air?

• Hand-picking

• Sieving

• Threshing

• Winnowing

Why do we separate substances from mixtures?

• To reduce recycling

• To increase impurities

• To obtain pure substances

• To create mixtures

What is the purpose of sieving in separating substances?

• To condense gases

• To evaporate liquids

• To separate substances of different sizes

• To separate liquids from solids

Which method is used to separate small particles from larger ones using a tool with tiny holes?

• Filtration

• Decantation

• Sieving

• Evaporation