Sieving can be used only when the components of the mixture have
Different sizes
Different melting points
Different boiling points
Different specific gravities
Pure substances possess
Variable melting points and boiling points
Nonuniform
Variable properties
Fixed melting points and boiling points
Wheat flour is separated from wheat bran by the method of
Hand picking
Sieving
Winnowing
Filtration
To separate ammonium chloride from common salt, we use
Sedimentation
Sublimation
Which of the following mixtures will be the most difficult to separate ?
Iron filings + sand
Sand + water
Saw dust + stones
Nitrogen + hydrogen
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 to water
Handpick the glass pieces
Handpick the sugar particles
A compound has
Only one kind of atom
Only one kind of element
A mixture of elements and molecules
Only one kind of molecules
A mixture contains two solids A and B. Solid A is light in weight while solid B is very heavy. Their sizes are almost same. Here, A is the unwanted component. To get pure solid B, which separation method would you suggest ?
Magnetic separation
You can use decantation to separate
Two miscible liquids
Two immiscible liquids
Two metals in an alloy
Solid- solid water
To separate a mixture of two or more gases ______ method is used
Liquification
Distillation
Decantation
