Separation of substances

While conducting an experiment, Rahul noticed that the particles of a solid were settling down in the liquid he was using. This process is known as

• Sublimation

• Sedimentation

• Filtration

• Decantation

The solubility ____________ with increase in temperature.

• doesn't change

• decreases

• increases

Tags

NGSS.MS-PS1-4

Sneha is helping her family on the farm, and they need to separate the grains from the stalk after harvesting. The manual process of separating grains from stalk is called _____________________.

• handpicking

• threshing

• sieving

• winnowing

Which separation technique uses the apparatus shown in the diagram?

• filtration

• evaporation

• distillation

• chromatography

Tags

NGSS.MS-PS3-4

Kiara is trying to separate sand from a mixture of sand and water. Filtration can be used to separate...

• an insoluble solid from a solution

• a soluble solid from a solution

• a dissolved solid from a solution

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

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

While helping Aanya with her project on traditional farming methods, Krish explained that winnowing is a crucial step in separating grain from chaff. Which of the following is essential to perform winnowing activity?

• Wind

• Water

• Magnet

• Filter paper

Kabir is trying to separate kerosene oil that accidentally mixed with water while he was working on a science project. How can he effectively separate the kerosene oil from the water?

• Decantation

• Filtration

• Condensation

• Crystallisation

The process of making mud particles heavy with alum

• Decantation

• Loading

• Filtration

• Condensation