Separation of Substances

Which method is used to separate pebbles and stones from sand

• Handpicking

• Decantation

• Winnowing

• Sieving

Salt is obtained from seawater by the process of _______

Which of the following mixtures would you be able to separate using the method of filtration?

• Oil in water

• Cornflakes in milk

• Salt in water

• Sugar in milk

Answer explanation

Since cornflakes are insoluble in milk it can be separated by the method of filtration.

A mixture of tea leaves and milk can be separated by decantation.

Is this statement true or false?

• True

• False

A mixture of iron filings and rice flour can be separated by a magnet.

Is this statement true or false?

• True

• False

A saturated solution is a chemical solution containing the minimum concentration of a solute dissolved in the solvent.

• True

• False

• I dont know

Answer explanation

A saturated solution is a chemical solution containing the **maximum** concentration of a solute dissolved in the solvent.

Salt is obtained from the seawater by drying it in the sun.

The process is known as ______

• filtration

• Threshing

• Churning

• Evaporation

The method which is used to obtain pure salt from impure salt

• Sieving

• Handpicking

• Crystallization

• Condensation

A solution which cannot dissolve more of a given substance at a given temperature is

• Saturated solution

• Solution

• Filtrate

• Unsaturated solution

Butter is separated from curd by the process of

• Heating

• Churning

• Sieving

• Filtration