Answer:1. Oil and water – suspension (The oil forms droplets that remain separate from the water and eventually settle.)2. Sand and water – suspension (Sand particles remain suspended temporarily but eventually settle at the bottom.)3. Marbles and water – not suspension (Marbles do not mix with water and simply sink; this is a heterogeneous mixture, but not a suspension.)4. Salt and water – not suspension (Salt dissolves completely in water, forming a solution.)5. Sugar and water – not suspension (Sugar dissolves completely in water, forming a solution.)6. Soy sauce and water – not suspension (Soy sauce dissolves and mixes completely in water, forming a homogeneous mixture.)7. Wine and water – not suspension (Wine mixes completely with water, forming a homogeneous mixture.)8. Poster paint and water – suspension (Paint particles remain suspended temporarily but will eventually settle.)9. Wax and water – suspension (Wax particles do not dissolve and remain suspended or float in water.)10. Iron filings and water – suspension (Iron filings do not dissolve and will settle at the bottom, making it a suspension.)