Advertisements
Advertisements
प्रश्न
What is meant by a solution?
What do you understand by the term solution?
Advertisements
उत्तर
A solution is a homogenous mixture of two or more substances, the relative proportions of which can vary within certain limits. Components of a solution are substances that mix together uniformly to form the solution.
APPEARS IN
संबंधित प्रश्न
The inter-molecular space is maximum in
Which one is a kind of matter:
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?
Name a non-metal which is a good conductor of electricity.
Name a metal which can be easily cut with a knife.
Name a metal which has a low melting point.
There is a large group of materials P which can be divided into three groups Q, R and S on the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.
- What could the group of materials P be ?
- Name the substances Q. Give two examples of such substances.
- Name the substances R. Write two examples of such substances.
- Name the substances S. Give two examples of such substances.
- Out of Q, R and S, which substances are malleable and ductile ?
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Name the source from which nitrogen and oxygen are obtained on a large scale.
Name the process you would use to separate a mixture of water and alcohol.
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
Pure copper sulphate can be obtained from an impure sample by the process of :
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
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 ?
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
![]() |
![]() |
![]() |
The arrangement of particles in three different phases of matter is shown above.
- Which state is represented by Fig. 1?
- In which state will the inter-particle attraction be maximum?
- Which one of them cannot be contained in an open vessel?
- Which one can take the shape of its container?
Diffentiate between absorption and adsorption.
A standard sheet of paper is about ______ of atoms thick
Atoms are tiny particles that repel each other when they are squeezed very close.



