Question

Which order of substances is proper for filtration of water ? 1) Coarse sand, powdered coal, fine sand 2) Powdered coal, fine sand, coarse sand 3) Powdered coal, coarse sand, fine sand 4) Fine sand, powdered coal, coarse sand​

Answer 1

Answer:

2

Explanation:

powdered coral

fine sand

Answer 2

Answer:

powdered coal

coarse sand