Question

Which of the following mixture can be separated by magnetic separation?

• A. Iron filings, sand and iodine
• B. Common salt, sand and marbles
• C. Chalk powder, grain and chaff
• D. Stone, salt and water

Answer 1

The correct option is A Iron filings, sand and iodine

For option A, the iron filling can be removed by using a magnet. an iron filling will be attracted by a magnet while water and iodine will not.

For option B, marbles can be separated by hand. Now add water salt will dissolve while sand will not. then separate the saltwater and sand.

For option C, winnowing can be used to separate chaff and grains.for chalk powder we can use filtration.

For option D, stone can be removed by handpicking, now water and salt can be separated by boiling the water. so water will evaporate leaving salt behind.