a.

Ductile

b.

Good conductors

c.

Lutrous

d.

Malleable

a.

Decrease

b.

Increase

c.

Be zero

d.

Remain constant

a.

It gives offensive taste

b.

Excess calcium is precipitated

c.

It attacks lead contained in pipes

d.

It encourages the growth of bacteria

a.

Solid particles dispersed in liquid

b.

Solid or liquid particles dispersed in gas

c.

Gas or liquid particles dispersed in liquid

d.

Liquid particles dispersed in liquid