Click the correct answer (True or False).
Click the correct answer.
Which of the following possess the properties of both metals and non-metals?
Noble gases
Metalloids
Metals
Non-metals
Which of the following is a type of mixture consisting of two or more immiscible liquids?
Solution
Solute
Emulsion
Solvent
Which of the following methods is used to separate a mixture of iron filings and sulphur?
Fractional distillation
Sedimentation
Magnetic separation
Winnowing
We can separate a mixture of sand and water by which of the following methods?
Distillation
Froth floatation
Sedimentation and decantation
Filtration
Which of the following techniques is used for the concentration of sulphide ores?
Evaporation
Crystallisation
Distillation
Froth floatation
Click the correct answer.
Matter can be broadly classified into pure substances and
.
elements
mixtures
compounds
atoms
A/An
is a substance that cannot be broken down into simpler substances.
element
mixture
compound
matter
are also called inert gases.
Metals
Non-metals
Noble gases
Metalloids
A pure substance has a
composition.
variable
improportionate
non-definite
definite
The principle of the technique of
is the difference in size of the components of a mixture.
magnetic separation
sieving
filtration
evaporation
is the method of separating components of a mixture using wind or moving air.
Winnowing
Sieving
Filtration
Magnetic separation
The process used to separate components of a mixture based on their relative solubility is called
.
distillation
fractional distillation
solvent extraction
magnetic separation
We can separate a mixture of common salt and potassium nitrate by
.
fractional crystallisation
distillation
fractional distillation
solvent extraction
The solid particles that settle down in the process of sedimentation are called
.
solutes
sediments
solvents
filtrates
The insoluble solid particles that are left behind in the filter are called
.
solute
sediments
solvent
residue