Question

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Answer 1

Answer:

Step-by-step explanation:

1. Iron Fillings:

Bring a Magnet over that mixture and the iron filling will get stick to it.

Reason:

Iron fillings is attracted by a Magnet.

2. Nacl: Add some water and string vigoriously. Nacl would be dissolved while NH4Cl and sand will not dissolve. Now use decantation method to obtain the Nacl mixed water and filter it to obtain Nacl

Reason:

Salt chloride is highly soluble in water.

3. NH4Cl:

• Place the remainingmixture on china dish.
• Place the china dish on a wire gauze that is placed over a tripod stand.
• Cover the china dish with an inverted glass funnel and plug in a little cotton at the opening of the stem of the funnel.
• On heating the mixture in the china dish, white fumes evolve and rise inside the funnel.
• Stop heating when the white fumes stop rising and allow the funnel to cool.
• After cooling, remove the funnel from the china dish and using a spatula, transfer the solid ammonium chloride sticking on the walls of the funnel into a watch glass.

Reason:

Ammonium chloride sublime and can be separated from the mixture of salt and sand by the process of sublimation.

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