Question

Match the species in Column I with the corresponding properties in Column II.

Answer 1

$\left(A\right)$ $S{O}_2+Ca(OH{)}_2\to CaS{O}_3+H_{2}O$

When $S{O}_2$ gas is passed through or over limewater, it turns milky due to the formation of calcium sulphite.

$\left(B\right)$ $S{O}_2$ is responsible for acid rain as These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

$\left(C\right)$ $C{O}_2+Ca(OH{)}_2\to CaC{O}_3+H_{2}O$

Due to formation of calcium carbonate lime water turns milky in presence of $C{O}_2$.

$C{O}_2$ is a primary green house gas. It dissolves in blood and control its $pH$.

$(D,E,F)$ $C{l}_2,B{r}_2$ and $O_3$, turn $KI/\text{starch}$ blue as chlorine releases iodine from the potassium iodide this iodine reacts with starch to produce the blue- black coloration.

Chlorination by $C{l}_2$ and ozonation by $O_3$ are used for disinfection of drinking water.