Advertisements
Advertisements
प्रश्न
What is meant by a solution ? Give two examples of solutions.
उत्तर
Solution is a homogeneous mixture composed of one phase only. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. The solvent dissolves the solute in it. The solution more or less takes on the characteristics of the solvent including its phase. Moreover, the solvent is commonly the major fraction of the mixture.
Example: Sugar solution, vinegar, metal alloys
APPEARS IN
संबंधित प्रश्न
The smallest unit of matter that exists freely in nature is called ...........
What are the two conditions for the interconversion of states of matter ?
A kind of matter which can sublime is
What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain during Brownian motion.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
There are three substances X, Y and Z. The substance X does not have a fixed melting point or boiling point and it still shows the individual properties of its constituents. The substance Y is a pure substance which occurs in nature as such. The substance Y has a fixed melting point and boiling point but it cannot be broken down into simpler substances by any chemical means. The substance Z is also a pure substance whose properties are entirely different from those of its constituents. The substance Z can, however, be divided by electrolysis into two substances which belong to the same class of substances as Y.
- What type of substance could X be ? Name one substance like X.
- What type of substance could Y be ? Name one substance like Y.
- What type of substance could Z be ? Name one substance like Z.
- Which process involves absorption or release of an appreciable amount of energy : formation of substance X or formation of substance Z ?
- Name the three groups into which all the substances like Y are divided on the basis of their properties.
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Define Foam Give one example.
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
Which of the following is not an emulsion ?
What difference in the properties of oil and water enable their separation by a separating funnel ?
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
Explain how, nitrogen , oxygen and argon gases are separated from air.
Which one of the following scrap metal cannot be separated by magnetic separation ?
Matter is made up of ______.
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
Give an example of liquid in gas.
