Question

2. Sewage is mainly a
(a) liquid waste.
(b) solid waste.
(c) gaseous waste.
(d) mixture of solid and gas.​

Answer 1

A). liquid waste.

$\underline{\bf{Explanation\::}}$

Sewage water is the wastewater that includes domestic and industrial liquid wastes.

It contains various suspended solids and harmful microorganisms.