Which of the following substances are likely to be soluble in water? a) zns b) au2(co3)3 c) pbcl2 d) mno2

All the given substances are insoluble in water

Explanation:

According to solubility rule-

(1) All sulfides are insoluble except alkali and alkaline earth metals.

So, ZnS is insoluble in water.

(2) All carbonates are insoluble except and alkali metals.

So, is insoluble in water.

(3) All chlorides are soluble except AgCl, and

So, is insoluble in water.

(4) All metallic oxides are insoluble except and alkali metals.

So, is insoluble in water.

answer: they produce more slow than unicellular organisms.