5. Name the methods which can be used to separate the following:
mixture of water and petrol
(ii) mixture of water and sand
(iii) mixture of water and sodium chloride
(iv) mixture of ethanol and water
(v) mixture of ammonium chloride and sand​

1. separating funnel

2. strainer

3. Simple distillation 

4. Fractional distillation

5.process of sublimation

Explanation:

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it's c. elements are placed in rows based on how may valencies electrons have.