Is Matter Around Us Pure-True/False

Your Progress 0 / 25 attempted
Q 01 / 25
A pure substance contains only one type of particle.
Q 02 / 25
Mixtures can have variable composition.
Q 03 / 25
Air is a pure substance.
Q 04 / 25
Salt dissolved in water forms a homogeneous mixture.
Q 05 / 25
A compound can be separated by physical methods.
Q 06 / 25
Alloys are mixtures.
Q 07 / 25
In a suspension, particles settle down on standing.
Q 08 / 25
Elements and compounds are both considered pure substances.
Q 09 / 25
Mixtures always have fixed boiling and melting points.
Q 10 / 25
Filtration can separate salt from water.
Q 11 / 25
Colloids are heterogeneous in appearance.
Q 12 / 25
Components of a mixture retain their properties.
Q 13 / 25
Evaporation is suitable for separating volatile solutes from non-volatile solvents.
Q 14 / 25
Sugar is a compound.
Q 15 / 25
Milk is an example of a solution.
Q 16 / 25
A homogeneous mixture has the same composition throughout.
Q 17 / 25
Suspension particles are too small to be seen without a microscope.
Q 18 / 25
A solution always contains a solute and a solvent.
Q 19 / 25
Tap water is a pure substance.
Q 20 / 25
Distillation is a process meant for separating mixtures based on boiling points.
Q 21 / 25
All mixtures are either homogeneous or heterogeneous.
Q 22 / 25
Sand in water forms a suspension.
Q 23 / 25
A compound contains elements combined in a fixed proportion.
Q 24 / 25
Mixtures always have uniform appearance.
Q 25 / 25
Physical methods can separate the components of a mixture.
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