Advertisements
Advertisements
प्रश्न
Describe the method of separating a mixture containing common salt, sand and ammonium chloride.
Advertisements
उत्तर
The method of separating a mixture containing common salt, sand and ammonium chloride employs three processes, i.e., sublimation followed by filtration and evaporation. To separate ammonium chloride from the mixture, we should first follow sublimation. In the process, ammonium chloride gets sublimed and a mixture of sand and salt is left behind.
To separate salt from the mixture, we should put the mixture in water. Salt will get dissolved in water and the insoluble sand will be obtained by filtration.
Lastly, salt is separated by evaporating the filtrate, where all the water evaporates leaving behind solid salt.
APPEARS IN
संबंधित प्रश्न
Gases have definite volume but no definite shape.
Liquids have definite shape and definite volume.
What are molecules ?
What is meant by saying that non-metals are brittle ?
What are pure substances ? Give two examples of pure substances.
Name two solid, two liquid and two gaseous elements at the room temperature.
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
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.
Out of a colloid, solution and a suspension :
which one has the largest particles ?
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
Describe a method to separate a mixture of camphor and sand.
Which of the following cannot be separated from air by the process of fractional distillation ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
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?
The property which allows the metals to be hammered into their sheets is ______.
All the matter made of ______.
Gases change to liquid by the process of ______.
Define the term matter.
Define the term matter.
