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
no chemical reaction
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Perfume industry obtains fragrant oil from plants using techniqueA. reverse osmosis
B. distillation
C. filtration
D. heating
The point at which solid substance changes into liquid state, is called
A. melting point
B. boiling point
C. power point
D. complex point
Mineral water is mixture of many
A. minerals
B. metals
C. gases
D. compounds
Petroleum, gasoline, kerosene, diesel and paraffin wax are yielded to fractional distillation of
A. mustard oil
B. sunflower oil
C. crude oil
D. almond oil
Saline solution is mixture of
A. water
B. salt
C. gases
D. both a and b
Boiling point is a point at which liquid turns in to
A. solid
B. gas
C. molten shape
D. vapours
The ‘technique’ which is used in water treatment plants, is
A. distillation
B. filtration
C. evaporation
D. fractional distillation
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