Advertisements
Advertisements
प्रश्न
How will you separate iron pins from sand ?
Advertisements
उत्तर
We will use magnet to separate iron pins from sand. The property of iron to get attracted towards a magnet is used to separate it from sand.
A magnet is moved on the surface of the mixture. Iron pins are attracted by the magnet. They cling to the poles of the magnet and get separated. This process is repeated till all the iron pins are separated.
APPEARS IN
संबंधित प्रश्न
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Gases have definite volume but no definite shape.
Define matter.
Fill in the blank
All matter is made up of tiny particles called ______
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
Name a liquid which can be classified as a pure substance and conducts electricity.
Which of the following are not compounds ?
Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
Which of the following is not an emulsion ?
Which of the following represents the solubility of sugar in water at 20°C ?
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
Fill in the following blanks with suitable words :
Miscible liquids are separated by .....................
How will you separate a mixture containing sand and sugar ?
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
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?
All the matter made of ______.
Intermolecular space is maximum in ______.
Higher the temperature, the higher the kinetic energy of particles.
Compressibility of solids: ______.



