Test B. Statements given below are incorrect. Write correct statements : 1. A powerful magnet separates iron from the compound iron sulphide. 2. Air is a compound of mainly oxygen and nitrogen gas. S 3. Sugar solution is an example of a hetero- geneous mixture. noz 4. Milk is a pure substance. 5. In a mixture of iron and sulphur, the particles of iron can be removed by dissolving sulphur in water.
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