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Mixtures
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General Science for Class 7
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Mixtures
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Mixtures
For purification water is passed through
sand
colander
watch glass
strainer
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Mixtures
Mud particles cannot pass through
filter paper
gauze
pipette
burette
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Mixtures
When different gases are mixed together to form air, there is
chemical reaction
no chemical reaction
no physical reaction
both chemical and physical reaction
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Mixtures
To separate different constituents with different boiling points into fractions there is use of
fractioning column
fractioning tower
fractioning box
both a and b
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Mixtures
A process in which liquid changes into vapor or gas by boiling, is called
distillation
filtration
evaporation
fractional distillation
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Mixtures
The percentage of noble gases in air is
0.2095
0.78
0.009
0.0003
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Mixtures
Air is a mixture of
elements
compounds
gases
molecules
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Mixtures
Water can be separated from mud by the help of
distillation
filtration
evaporation
fractional distillation
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Mixtures
Mixing of metals with other metals or non-metals makes
alloy
metalloid
alkali
compound
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Mixtures
Minerals in water include
calcium
magnesium
potassium
all of above
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