Question -
Answer -
Sulphur dioxide causes harm tothe environment in many ways:
1. Itcombines with water vapour present in the atmosphere to form sulphuric acid.This causes acid rain. Acid rain damages soil, plants, and buildings,especially those made of marble.
2. Even invery low concentrations, SO2 causes irritation in therespiratory tract. It causes throat and eye irritation and can also affect thelarynx to cause breathlessness.
3. It isextremely harmful to plants. Plants exposed to sulphur dioxide for a long timelose colour from their leaves. This condition is known as chlorosis. Thishappens because the formation of chlorophyll is affected by the presence ofsulphur dioxide.