Advertisements
Advertisements
प्रश्न
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Advertisements
उत्तर
The property that enables the separation of two miscible liquids by fractional distillation is the difference in their boiling points.
APPEARS IN
संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Define the following term of Atom .
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
What is meant by saying that metals are malleable and ductile ?
What is the general name of the materials which contain at least two pure substances and show the properties
of their constituents ?
Name one element, one compound and one mixture.
What is the other name for impure substances ? Give two examples of impure substances.
What is meant by (i) elements (ii) compounds, and (iii) mixtures ?Write down the names of two elements, two compounds and two mixtures.
On the basis of composition of matter, milk is considered to be :
State whether the following statement is true or false :
Sponge is an example of solid sol.
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
One of the following is a solid foam. This one is :
How will you separate a mixture containing sand and sugar ?
The material which is added to water during purification process at the water works so as to disinfect it is :
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
What difference in the properties of common salt and sand would enable you to separate a mixture of these two substances ?
Explain the meaning of the term matter with special reference to the term ‘substance’.
The physical state of water at 373 K is ______.
The phenomenon of Evaporation takes place at the ______ of a liquid.
Define the term matter.
