Question

(a) Name four kinds of suspended impurities present in river water.

(b) Name two kinds of dissolved impurities present in river water.

(c) Why is river water not fit for drinking purposes?

Answer 1

(a) River water is a natural form of water present over the earth's surface.

Four kinds of suspended impurities in river water are:

• Dust, Sand, Clay, Rust, etc.

(b) There are two kinds of dissolved impurities that are present in river water:

• Chlorides(${\mathrm{Cl}}^{-1}$) and Bicarbonates(${\mathrm{HCO}}_3^{-1}$) of Calcium($\mathrm{Ca}$), Magnesium($\mathrm{Mg}$), Sodium($\mathrm{Na}$) and Iron($\mathrm{Fe}$).

(c) River water contains dissolved as well as suspended impurities. Therefore it is not safe for drinking.