Question

1.
2.
Name any three methods used for separating a solid-solid mixture.
What is winnowing? Give an example of a mixture whose components can
be separated by this method.
3.
Some iron pins get scattered on the carpet when you are expecting guests
How can one collect all the pins in the shortest possible time?
Name any three substances which sublime on heating.
5.
What is crystallisation? Name any three substances which can be purif
using this technique.

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Answer 1

Answer:

hand picking, threshing, sublimation.

Answer 2

Answer:

5 Crystalline compounds are generally purified via this crystallisation process. An example of this crystallization process is the production of Glauber's salt, a crystalline form of sodium sulfate.