Question

which method is most suitable to obtain zinc carbonate from a suspension of zinc carbonate in water?

Answer 1

Answer:
It is filtration.
Zinc carbonate, like the carbonates of most divalent metals, is almost insoluble in water.The suspension is a heterogeneous mixture containing the solid particles that are sufficiently large for the sedimentation just like sand in water, so as you can easily separate sand from water by filtration. You can do same thing with zinc carbonate.