Online Test — Methods of Separation in Everyday Life
15 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 15
Two or more substances mixed without forming a new substance make a:
Mixture
Metal
Solution only
Magnet
Explanation: Substances simply mixed together form a mixture.
Question 2 of 15
The method of separation we use mainly depends on the ___ of the substances.
Price
Properties
Names
Colours only
Explanation: We choose a method based on properties like size, weight and solubility.
Question 3 of 15
Removing a few visible stones from rice by hand is called:
Winnowing
Hand-picking
Filtration
Evaporation
Explanation: Picking out large, few, visible bits by hand is hand-picking.
Question 4 of 15
Separating lighter husk from heavier grain using wind is:
Hand-picking
Winnowing
Decantation
Filtration
Explanation: Winnowing uses wind to carry away the lighter husk.
Question 5 of 15
When muddy water is left still, the mud settles to the bottom. This is:
Sedimentation
Filtration
Evaporation
Winnowing
Explanation: Insoluble solids settling to the bottom is sedimentation.
Question 6 of 15
The solid that settles at the bottom during sedimentation is called the:
Filtrate
Sediment
Husk
Residue gas
Explanation: The settled solid is the sediment.
Question 7 of 15
Gently pouring off the clear liquid above the settled solid is:
Decantation
Filtration
Evaporation
Winnowing
Explanation: Pouring off the clear upper liquid is decantation.
Question 8 of 15
Passing a mixture through filter paper or a sieve is called:
Sedimentation
Filtration
Winnowing
Hand-picking
Explanation: Filtration passes liquid through a filter and traps the solid.
Question 9 of 15
In filtration, the clear liquid that passes through is the:
Residue
Filtrate
Sediment
Husk
Explanation: The liquid passing through the filter is the filtrate.
Question 10 of 15
In filtration, the solid trapped on the filter is the:
Filtrate
Residue
Solution
Vapour
Explanation: The solid held back on the filter is the residue.
Question 11 of 15
When tea is poured through a strainer, the strainer acts as a:
Magnet
Filter
Thermometer
Mirror
Explanation: A strainer with tiny holes is a filter; this is filtration.
Question 12 of 15
Salt dissolved in water cannot be separated by filtration because the salt:
Settles at the bottom
Passes through the filter with the water
Floats on top
Turns into a gas
Explanation: Dissolved salt passes through the filter, so filtration cannot remove it.
Question 13 of 15
To separate dissolved salt from water we use:
Filtration
Evaporation
Winnowing
Decantation
Explanation: Evaporation removes the water and leaves the salt behind.
Question 14 of 15
Common salt is obtained from sea water using the Sun's heat by:
Solar evaporation
Filtration
Sedimentation
Hand-picking
Explanation: Solar evaporation leaves the salt behind as the sea water evaporates.
Question 15 of 15
To separate sand, salt and water, you should first ___ and then ___.
evaporate, then filter
filter to remove sand, then evaporate to get salt
winnow, then hand-pick
do nothing
Explanation: Filter out the insoluble sand first, then evaporate the salt water to obtain the salt.