Question

how can be be mixture of salt,chalk powder and iron fillings can be separated​

Answer 1

U simply need to take a magnet and separate the iron fillings from the mixture. Then in water mix NaCl and chslk powder. Chalk powder is insolubke so it can be strained and separated . The salt solution can be heated , water will evaporate and hence you get the salt

Answer 2

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According to the question;
In a mixture with components of iron,chalk powder and common salt.
To separate the components of this mixture.
Follow the steps mentioned below;

1) Use magnet to seperate the iron filings

2) After that pour water in the mixture of salt and chalk powder.The salt will be diluted in the water in no time.

3) At last heat that water solution with chalk remainings and the water will be vaporized and we will get the chalk powder as the residual product.
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Thanks✊..