Which of the following is known as placer deposits?
1) Metals that occur as sandy deposits in sands of sea floor.
2) Minerals that occur as alluvial deposit in sand of valley floor.
3) Metals that occur as sandy deposit in sand of land floor.
4) None of the above
2) Minerals that occur as alluvial deposit in sand of valley floor.
Placer deposit- The deposit of masses of rocks eroded by wind, water and other agents is called placer deposits.