Advertisements
Advertisements
Question
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
Advertisements
Solution
A colloid is a heterogeneous mixture and its components can be separated by the technique known as centrifugation.
APPEARS IN
RELATED QUESTIONS
Name the processes involved in two cases.
In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?
What is meant by saying that metals are sonorous ?
Name a metal which has no fixed shape.
In the following set of substances, one item does not belong to the set. Select this item and explain why it does not belong to the set :
Hydrogen, Oxygen, Steam, Chlorine
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.
(a) Which liquid could be an element ? Name this element.
(b) Which liquid could be a mixture ? Name this mixture.
(c) Which liquid could be a compound ? Name this compound.
(d) What could the solid D be ?
(e) What do you think is liquid E ?
Which one of the following is not a chemical change ?
How will you separate a mixture of common salt, sulphur powder and sand ?
Pure copper sulphate can be obtained from an impure sample by the process of :
Naphthalene can be separated from sand :
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
Explain the meaning of the term matter with special reference to the term ‘substance’.
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
Compressibility of solids: ______.
Define the term matter.
Define the term matter.
