Wheat flour is separated from wheat bran by the method of :
handpicking
sieving
winnowing
filtration
A small boy mischievously mixed small pebbles into a bag of pulses. What method will you employ to separate the mixture ?
Magnetic separation
Crystallisation
Handpicking
Filtration
A pure substance is made up of :
only one kind of molecules
two or more kinds of molecules
different types of molecules
none of the above
A few coloured glass pieces that are big in size are mixed with sugar . The easiest way to separate them is :
heat the mixture
add the mixture of water
handpick the glass pieces
handpick the sugar particles
Pure substances possess :
variable melting points and boiling points
nonuniform composition
variable properties
fixed melting points and boiling points
Identify the compound from the following.
Carbon dioxide
Iron
Hydrogen
Air
Identify the mixture from the following.
Oxygen
In a mixture , constituents exhibit :
similar properties
only those properties which are characteristic to the mixture
their own properties
no properties
Sand and water can be separated by :
decantation
sublimation
magnetic separation
Alloys are the examples of mixtures of :
solid-in-gas
gas-in-solid
gas-in-gas
solid-in-solid
