A mixture of sand and water can be separated by
A mixture of carbon dioxide and oxygen can be separated by___________method.
Neon is a ______________gas.
Monoatomic
Diatomic
Triatomic
Polyatomic
____________is any atom or a group of atoms which has a resultant charge.
Atom
Molecule
Ion
Element
The most abundant element on the earth's crust is
Oxygen
Aluminium
Iron
Mercury
____________is the basic principle of chromatography.
During sedimentation,the __________particles settle down at the bottom of the beaker and clear water collects above it.
____________is a polyatomic gas.
Hydrogen
Helium
Neon
Ozone