Question

Question 2

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

Answer 1

The answer is option (a).

Sewage is mainly liquid waste. It is the wastewater containing both liquid and solid wastes produced by human activities from homes, industries, hospitals, offices, etc. It majorly consists of water, which consists of dissolved and suspended impurities called contaminants. Sewage contains various contaminants including disease-causing bacteria and other microbes. The wastewater and faeces from homes and other buildings are carried away by sewers.