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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

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

The diagram shows the apparatus for separating soil and water. What are the labelled parts?

• A = distillate, B = filtrate
• A = filtrate, B = residue
• A = residue, B = filtrate
• A = residue, B = distillate

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

What is the boiling point of water?

• 0^oC
• 100^oC
• 80^oC
• 95^oC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Filtration can be used to separate...

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

What separation technique does the picture show?

• Sieving

• filtering

• magnetic separation

• Distillation

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

Iron and copper screws could be separated using a magnet because

• iron is magnetic, copper is not
• copper is magnetic, iron is not
• neither metal is magnetic
• copper screws are heavier than iron and fall off the magnet

Tags

NGSS.HS-PS2-5