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प्रश्न
How will you separate a mixture containing saw dust, naphthalene and iron filings?
उत्तर
When a magnet is brought near the mixture containing saw dust naphthalene and iron filings, it attracts the iron filings. Thus iron filings are separated.
The mixture of naphthalene and saw dust are put in a china dish and covered with a perforated asbestos sheet. An inverted funnel is placed over the asbestos sheet.
The open end of the stem of the funnel is closed, using cotton wool. The china dish is heated. The pure vapours of naphthalene solid pass through the holes in the asbestos sheet and condense on the inner side of the funnel. The saw dust is left in the china dish.
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संबंधित प्रश्न
Explain why, a solution of salt in water is considered a mixture and not a compound.
Which method can be used to separate a mixture of naphthalene and common salt ?
Which of the following can be separated by using a separating funnel and which cannot be separated by using a separating funnel ?
- water and kerosene mixture
- water and acetone mixture
Give reasons for your answer.
Give reason:
Why sulphur does dissolve when carbon disulphide is added to a mixture of iron and sulphur but not when it is added to iron sulphide?
Give an example of mixtures of two elements
State whether the following statement is true or false. If false write – the correct statement.
Mixture has no definite set of properties.
Name the following:
The component of the soluble solid-liquid mixture, which is lost to the atmosphere on heating.
Select the correct answer from the choice in the bracket.
A homogenous mixture.
Make a fruit or vegetable salad. Give reasons why you think it is a mixture.
Mixtures are impure substances.
