Which of the following separation techniques can be used to separate iron pins from sand?

Correct option is B

The correct answer is (b) Magnetic separation.
· Magnetic separation is the technique used to separate iron pins from sand.
· Since iron is magnetic and sand is not, a magnet can be used to attract the iron pins, leaving the sand behind.
· This method works effectively for materials that have different magnetic properties.
Information Booster:
· Magnetic separation uses a magnet to extract magnetic materials from non-magnetic substances.
· It is commonly used in industries like recycling, mining, and metallurgy to separate metals.
· Magnetic separation is ideal for separating magnetic metals like iron, cobalt, and nickel.
Additional Knowledge:
· Evaporation: This technique is used to separate a soluble solid from a liquid, not for separating solid materials like iron pins and sand.
· Fractional distillation: This method is used to separate liquids with different boiling points, not for solid materials like iron and sand.
· Filtration: Filtration is used to separate insoluble solids from liquids, not for separating two solid components like iron pins and sand.