Seperation of substances

what is churned to separate butter?

• water and oil

• curdled milk

• milk and curds

• flour and milk

what is the method of separating components from a mixture by blowing?

• handpicking

• threshing

• winnowing

• washing

What is removed from wheat before grinding?

• stones

• husk

• dust

• option 1 and 2

• all of the above

Where is grain separated from?

• Stalks

• Wheat

• Rice

• Atta

When is the solution saturated?

• No more salt can be dissolved in the amount of water we have taken

• Lot more salt can be added

• You have to add some sugar into the solution

• None of the above

What is a mixture?

• A chemical combination of two or more different substances.

• A physical combination of two or more different substances.

• A chemically pure substance.

• A special type of solution

The process of settling down of particles of a solid in a liquid is

• Sublimation

• Sedimentation

• Filtration

• Decantation

While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?

• Threshing

• Sieving

• Winnowing

• Filtration

Sawdust is not soluble in water. If, accidentally some particles of sawdust drop into a glass of water. How would you separate them from water?

• Decanting

• Filtering

• Sieving

• Distillation

Which technique is shown the diagram below

• seiving
• filtration
• decanting
• crystallization