Study the following statements regarding acid rain and select the incorrect ones.
I. Acid rain refers to the rainfall and other form of precipitation with a pH of less than 5.
II. Oxides of sulphur and nitrogen are released from automobile exhausts, power plants etc.
III. These oxides of sulphur and nitrogen may react with water in the air and form sulphuric acid (H2SO4) and nitric acid (HNO3).
IV. Acid rain has harmful effects on animals and human beings but no characteristic impact on plants.
Study the following statements regarding acid rain and select the incorrect ones.
I. Acid rain refers to the rainfall and other form of precipitation with a pH of less than 5.
II. Oxides of sulphur and nitrogen are released from automobile exhausts, power plants etc.
III. These oxides of sulphur and nitrogen may react with water in the air and form sulphuric acid (H2SO4) and nitric acid (HNO3).
IV. Acid rain has harmful effects on animals and human beings but no characteristic impact on plants.
The correct option is D IV only
Acid rain refers to any form of precipitation which contains acidic components, such as sulphuric or nitric acid and falls to the ground in wet (rain, fog, snow) or dry (acidic gases and chemicals blown by wind) forms.
When pollutants such as oxides of nitrogen and sulphur dioxide (SO2) are added in large concentrations to the air, they react with oxygen, atmospheric water vapour and other chemicals to form acids such as nitric acid and sulphuric acid. Sulphur dioxide (SO2) reacts with atmospheric water (H2O) to form Sulphurous acid (H2SO3) and when dioxide reacts with oxygen it forms sulphur trioxide (SO3). SO3 reacts with water to form sulphuric acid (H2SO4). Nitric oxide (NO), which also contributes to the natural acidity of rainwater, is formed during lightning storms by the reaction of nitrogen and oxygen, two common atmospheric gases. In air, NO is oxidized to nitrogen dioxide (NO2), which in turn reacts with water to give nitric acid (HNO3). These acids mix with rain water or other substances before they fall on to the ground in wet or dry form.
Acid rain alters the pH of soil and water bodies. This negatively affects the growth of plants and kills aquatic organisms. It also causes damage to assets and properties by spoiling or corroding structures made up of stone, marble, limestone, etc. Thus, statement IV is incorrect.
Acid rain refers to any form of precipitation which contains acidic components, such as sulphuric or nitric acid and falls to the ground in wet (rain, fog, snow) or dry (acidic gases and chemicals blown by wind) forms.
When pollutants such as oxides of nitrogen and sulphur dioxide (SO2) are added in large concentrations to the air, they react with oxygen, atmospheric water vapour and other chemicals to form acids such as nitric acid and sulphuric acid. Sulphur dioxide (SO2) reacts with atmospheric water (H2O) to form Sulphurous acid (H2SO3) and when dioxide reacts with oxygen it forms sulphur trioxide (SO3). SO3 reacts with water to form sulphuric acid (H2SO4). Nitric oxide (NO), which also contributes to the natural acidity of rainwater, is formed during lightning storms by the reaction of nitrogen and oxygen, two common atmospheric gases. In air, NO is oxidized to nitrogen dioxide (NO2), which in turn reacts with water to give nitric acid (HNO3). These acids mix with rain water or other substances before they fall on to the ground in wet or dry form.
Acid rain alters the pH of soil and water bodies. This negatively affects the growth of plants and kills aquatic organisms. It also causes damage to assets and properties by spoiling or corroding structures made up of stone, marble, limestone, etc. Thus, statement IV is incorrect.
