Advertisements
Advertisements
प्रश्न
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.
पर्याय
True
False
उत्तर
False
Correct Statement: Components in a mixture can be separated by physical methods.
संबंधित प्रश्न
State the main points of difference between homogeneous and heterogeneous mixtures.
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.
Discuss the method of separating a mixture containing chalk powder, iron filings and naphthalene.
Define the following:
Impure substance
Fill in the blanks
___________is a process to obtain a very pure form of a solid dissolved in a liquid.
Explain the term mixtures.
Give a reason why sublimable and non-sublimable substances can be separated easily, but two sublimable substance cannot.
Differentiate between a homogenous and a heterogeneous mixture with one example of each in the (a) solid-solid (b) solid-liquid If (c) liquid-liquid state of the mixture.
Among the following______ is a mixture.
While diluting a solution of salt in water, a student by mistake added acetone (boiling point 56°C). What technique can be employed to get back the acetone? Justify your choice.
