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प्रश्न
Give a reason why sublimable and non-sublimable substances can be separated easily, but two sublimable substance cannot.
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उत्तर
While separating the mixture sublimable and non-sublimable substances, the sublimable substance turns directly into vapour on heating whereas non-sublimable solid remains behind. Since, if we try to separate the mixture of two sublimable substances, then both the sublimable substances turn into vapour on heating and vapour on cooling give back the pure same solid.
संबंधित प्रश्न
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.
Milk is an example of a type of matter called ______.
Name the components present in the following mixture:
Duralumin
Why do we need pure substances?
Fill in the blanks
The substances that make a mixture are called its ______or_________.
Give an example of mixtures of two elements
Give an example of mixtures of two compounds
State what information is provided by the formula of calcium hydroxide – Ca(OH)2
Mixtures are impure substances.
When elements are physically mixed they form ______.
