Advertisements
Advertisements
Question
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.
Advertisements
Solution
- Mixtures like A are known as suspensions.
- Mixtures like B are known as colloids.
- Mixtures like C are known as true solutions.
- The phenomenon exhibited by A and B, which occur on passing a beam of light through them, is called Tyndall effect.
- i. Mud water mixture is like A.
ii.Soap solution is a mixture like B.
iii. Sugar solution is a mixture like C.
APPEARS IN
RELATED QUESTIONS
Explain why, a solution of salt in water is considered a mixture and not a compound.
A mixture of sulphur and carbon disulphide is :
Give two examples of the following type of mixture.
gas-gas
Write “true” or “false” for the following statement
Steel is an alloy of iron and aluminum.
State whether the following statement is true or false. If false write – the correct statement.
Components in a mixture are present in a definite proportion.
State whether the following statement is true or false. If false write – the correct statement.
Components in a mixture can be separated by physical and chemical methods.
Write the sequence of steps you would use for making tea. (Use the words: mixture, dissolve, filtrate and residue).
Milk is a ______.
Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.
You are provided with a mixture containing sand, iron filings, ammonium chloride and sodium chloride. Describe the procedures you would use to separate these constituents from the mixture?
