Which barium salt is insoluble in water?
a) baco3. b) bacl2
c) ba(clo4)2. d) ba(no3)2

The correct answer is option(A).

Explanation:

Sulfates and carbonates of barium are highly insoluble in water. but they are soluble in acids except sulfuric acid because with sulfuric acid they form barium sulfate which is a highly insoluble salt in water.

Where as barium chloride, barium nitrate and barium perchlorates are highly soluble in water.

Hence, the correct answer is option(A).

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

if you mean hydrogen and oxygen then water is the product