Grade VI Science "Separation of Substances''

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

• Sublimation

• Sedimentation

• Filtration

• Decantation

The solubility ____________ with increase in temperature.

• doesn't change

• decreases

• increases

Which technique is shown the diagram below

• seiving
• filtration
• decanting
• crystallization

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

Separation of components is done to obtain a _____________ substance.

Filtration can be used to separate...

• an insoluble solid from a solution
• a soluble solid from a solution
• a dissolved solid from a solution

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 the process that is used to separate grains from stalks called?

• handpicking

• threshing

• sieving

• winnowing

What is the boiling point of water?

• 0^oC
• 100^oC
• 80^oC
• 95^oC

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