Question

How are stones and pebbles separated from sand at a construction site?

Answer 1

by magnet is we can stones and pebbles

Answer 2

Answer:

• Stones and pebbles are separated from sand at a construction site by sieving. Sieving is a ‘physical method’ of separating particles.
• Sand is a “mixture of fine sand particles, stones, and pebbles”.
• In construction sites, sand is passed through sieves.
• These are either operated mechanically by hands or by passing through a conveyor constructed with differently-sized sieve plates or screens.
• The sieve plate or screen with fine holes will let through the finer sand particles and not the larger stones or pebbles.
• Thus stones or pebbles are separated from sand.