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Separation of Components of a Mixture
Separation of Components of a Mixture
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1)
The process in which a solid changes directly into its vapour is called:
Vaporization
Sublimation
Melting
Freezing
2)
Identify the substance undergoing sublimation.
Salt
Copper sulphate
Naphthalene
Acetic acid
3)
Identify the substance which sublimates and is used to protect warm clothes.
Ammonium chloride
Iodine
Neem leaves
Naphthalene
4)
The process used to separate salt and camphor from a mixture is:
Combustion
Sublimation
Vaporization
Distillation
5)
What is observed when a mixture of common salt and ammonium chloride is heated?
Solid common salt gets deposited on the cooler parts of the funnel, while solid ammonium chloride remains in the china dish.
Mixture of common salt and ammonium chloride turns into greenish crystals when allowed to cool.
Ammonium chloride is deposited on the cooler parts of the funnel and solid common salt remains in the china dish.
Droplets containing both common salt and ammonium chloride appear on the upper part of the funnel, while some molten mixture of common salt and ammonium chloride remains in the china dish.
6)
The aqueous mixture of salt and sand can be separated by the following method.
Filtration
Sublimation
Condensation
Melting
7)
Sublimation is used to separate:
Two liquids having different boiling points.
Two liquids having same melting point.
Volatile and non volatile solids.
Volatile solids having same melting point.
8)
When sodium chloride and ammonium chloride are dissolved in water and filtered, what is the residue?
Sodium chloride
Ammonium chloride
Both
None
9)
What is an example of a heterogeneous mixture?
Cream
Butter
Jelly
All the three
10)
What is the sequence of steps for separating a mixture of ammonium chloride, sand and common salt?
Sublimation, adding water, filtration and evaporation.
Evaporation, adding water, filtration and sublimation.
Filtration, evaporation, sublimation and adding water.
Evaporation, sublimation, adding water and filtration.