Advertisements
Advertisements
प्रश्न
How will you separate a mixture of sodium chloride and sand ?
Advertisements
उत्तर
Two processes are involved in separation of sodium chloride and sand, i.e., filtration followed by evaporation. The mixture of sodium chloride and sand can be separated by the following method:
- Take the mixture of sodium chloride and sand in a china dish. Pour some water in the mixture of sodium chloride and sand.
- After few seconds, all the sodium chloride will dissolve in water but sand will not.
- Then pour the contents of the container in a funnel fitted with a filter paper.
- Sand remains on the paper as residue and sodium chloride dissolved in water passes through it to the funnel.
- Now put the salt solution of the funnel on heat. Water starts getting evaporated leaving salt as residue in the funnel.
- Remove the funnel from heat.
APPEARS IN
संबंधित प्रश्न
Which of the following are homogeneous in nature ?
- ice
- wood
- soil
- air
Three mixtures A, B and C are obtained by stirring three different solids in water taken in separate beakers. When mixture A is allowed to stand for some time, then its particles settle at the bottom of the beaker. When a beam of light is passed through mixture A in a dark room, the path of light becomes visible when observed from the side of the beaker. When mixture B is allowed to stand for a considerable time, even then its particles do not settle down. Mixture B, however, scatters the beam of light just like mixture A. The particles of mixture C do not settle down on keeping and it also does not scatter a beam of light passing through it.
What are the mixtures like A known as ?
What are the mixtures like B known as ?
What are the mixtures like C known as ?
Name the phenomenon exhibited by A and B which occurs on passing a beam of light through them.
Name one mixture each which is like (i) A (ii) B, and (iii) C.
Name the process you would use to separate a mixture of anthracene and copper sulphate ?
Select homogeneous and heterogeneous mixtures from the following:
The salt solution, petrol, and water, sand, and charcoal, alcohol and water, air dissolved in water, air, seawater, fruit juices, mist, brass.
Differentiate between homogeneous and heterogeneous mixtures with suitable examples.
Why do we need to separate different components of a mixture? Give two examples.
Mixtures are impure substances.
Expand LPG ______.
List out the characteristics of Mixtures.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
