Advertisements
Advertisements
प्रश्न
Describe a method to separate a mixture of common salt and sand.
Advertisements
उत्तर
Separation of common salt and sand from a mixture involves the processes of filtration, followed by evaporation.
Sand can be separated from a mixture of sand and salt solution (salt dissolved in water) by filtration. After filtration, sand remains on the filter paper as a residue. Common salt can now be obtained from the filtrate by boiling it. Boiling causes all the water to evaporate and salt is left behind. This process is called evaporation.
APPEARS IN
संबंधित प्रश्न
Liquids have definite volume but do not have definite shape.
Define the following term of Matter .
What is the scientific name of particles which make up mater?
Define matter. Give four examples of matter.
Name a liquid which can be classified as a pure substance and conducts electricity.
Fill in the following blanks with suitable words :
The elements which are sonorous are called ..........................
What are the two types of pure substances? Give one example of each type.
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
The element which is not common between the compounds called baking soda and soda ash is
Which one of the following is not a metalloid ?
State whether colloidal solutions are homogeneous or heterogeneous.
Explain what happens when a beam of light is passed through a colloidal solution.
How will you differentiate between a suspension and a colloid ?
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
The technique which is used to separate particles of a solid suspended in a liquid quickly is called :
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
The property which allows the metals to be hammered into their sheets is ______.
All the matter made of ______.
Which statement is not correct for a mixture
