The following property is used to find the purity of a substance
Specific gravity
Volume
Temperature
Mass
A mixture is a / an
Pure substance
Impure substance
Some are pure and others are impure
None
Which of the following property is not considered when the components of a mixture is separated ?
Density
Energy - change
Volatile nature
Boiling point
Winnowing is useful only when
Two solids have different melting points
Two solids have different boiling points
Two solids have different magnetic properties
Two solids have different weights
To separate a mixture of two or more gases ______ method is used.
Sedimentation
Liquification
Distillation
Decantation
Choose the substance that shows sublimation
Napthalene
Toluene
Kerosene
Water
The process by which a solid changes directly into gas is called
Sublimation
Condensation
A pure substance is made up of
Only one kind of molecules
Two or more kinds of molecules
Different types of molecules
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
