Advertisements
Advertisements
प्रश्न
Pure copper sulphate can be obtained from an impure sample by the process of :
पर्याय
evaporation
fractional distillation
centrifugation
crystallisation
Advertisements
उत्तर
crystallization
Crystallization is the process of cooling a hot concentrated solution of a substance to obtain its crystals in pure form.
APPEARS IN
संबंधित प्रश्न
The inter-molecular force is maximum in
Define the following term of Matter .
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
What are pure substances ? Give two examples of pure substances.
What is the other name for impure substances ? Give two examples of impure substances.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Name a metal which has no fixed shape.
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
What are the three general classes of matter ? Give one example of each type.
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
What will happen if a saturated solution is :
- heated
- cooled
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not ?
Name the process by which all the dye can be recovered from black ink.
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
Matter is made up of ______.
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
Define the term matter.
